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Netgear XM128 ISDN User's Manual

1. Table C 1 Basic AT command set continued Command Options Function and description CPn Loopback 4 control CPO Disable Loopback 4 CP1 Enable Loopback 4 CRn n 0 3 Resumes a previously suspended call n is the call identifier Europe 0 CSn n 0 3 Suspends a call n is the call identifier Europe 0 Ds Dial s numbers and options that follow See also S register 38 0 and 35 4 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes The s options are listed as follows Pause for a time specified in S6 Remaining digits are dialed as in band DTMF Prefix for the second number string to be used in making bundling or MPPP calls W Wait for second dial tone Remaining digits are dialed as in band DTMF ISDN numbering options YO Unknown type of number Y1 International number Y2 National number Y3 Network specific number Y4 Subscriber number Y6 Abbreviated number ZO Type of subaddress NSAP with AFI 50 IA5 characters Z2 Type of subaddress user specified IA5 characters NO Unknown numbering plan N1 ISDN Telephony numbering plan CCITT E 164 E 163 N3 Data numbering plan CCITT X 121 N8 National standard numbering plan N9 Private numbering plan Called party subaddress delimiters Format of s Yn Nn called party number J W linband dtmf number ree patty Nombs Dnjcslled party subaddress C 4 AT Com
2. A 1 Appendix B Security Functions security Typss and Levels 12er Ap pPesP v epp UT ra dA puP FECE Lo pM DE p i er DUM E Pa cH RH aiuta En BUR UA E 1 o ELE B 2 En us ers TUE B 2 NEA er B 3 Seting and Modilying PaBsseweltis zuisegciisavdcsiipnondidesdvrnves ert Up LU S FX E di REA B 3 Nonpassword Auto Callback Function To Appendix C AT Command Set Reference Operation Mode of the DTE Interface esses C 1 SE ROO rina C 1 AT Command DSSEITpORB iaceo rip po i accedo XR OU CAR KR RR Fb ARR ab RA C 2 isscupuiamor ATE OWDUT Jessa cas nce pact tiem vetns Deed tiui toon Lei bbeete mus rta DE De ara ra apnd Contents ix Reference Guide for the Model XM128 ISDN Digital Modem Appendix D Status Registers and Result Codes Miewiimg and Seling S Fediglgl e 15i sabia csinore tus dran deterius dap dn dab enia dabas nda D 1 Senno Seth IRE iai LT DT D 2 Examples for Setting S Registers ebd iu T E D2 S F egete DESCRIPTIONS T D 4 ATXN Resuli Gode Opton TANG uiis aon rod irem te Y Rr trei unn RIA CER E ib Ex eniti D 19 Result Code Chart Symbol Reference TC Result Code Field Descriptions 4o cn dp e EXER REX VR HEURE HREEDER Cer ERE C RE UAR AR D 22 Connect Strings for Error Corrected Connections ccccccceccceessecceeeseeeseeeesseees D 23 Appendix E
3. Status Registers and Result Codes D 9 Reference Guide for the Model XM128 ISDN Digital Modem Table D 4 Extended S registers ATSn x continued Command Bit Decimal Hexadecimal Function and description Default or reference S64 0 255 0 FF Security callback timer in unit of 1 second 050 S80 Bitmapped register 000 Do not send low layer compatibility information for PHONE 2 Model XM128 modem or internal fax modem 28641 16 10 Send low layer compatibility for PHONE 2 Model XM128 modem or internal fax modem 28641 Do not send low layer compatibility information for ISDN data call 40 Send low layer compatibility for ISDN data call Do not send low layer compatibility information for PHONE 1 Model XM128 modem or analog adapter 28641 128 80 Send low layer compatibility for PHONE 1 Model XM128 modem or analog adapter 28641 D 10 Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Table D 4 Extended S registers ATSn x continued Command Bit Decimal Hexadecimal PAA raat 82 ISDN B channel protocol Bn 60 V 120 64000 61 V 120 56000 62 X 75 64000 Transparent 63 X 75 56000 Transparent 64 X 75 64000 T 70 65 X 75 56000 T 70 72 V 110 64000 73 V 11
4. OK Listen to the dial tone and then dial 1234567890 in sequence 1234567890 Troubleshooting 10 3 Reference Guide for the Model XM128 ISDN Digital Modem Dia On Lis Off Lis t23 Dia On Lis swit But led digits detected please hang up the handset hook action is detected Hook Interrupt OK ten to the RING and then pick up phone set 42 hook action is detected Hook Interrupt OK ten to the dial tone and then dial 1234567890 in quence 4567890 4 led digits detected please hang up the handset hook action is detected Hook Interrupt OK ten to the prompt signal of the Internal Speaker and then press the button ton switch is pushed Button Interrupt OK Modem Reset If you have modified the setting of the Model XM128 modem and cannot get it back because the unit is locking up or you just want to reset it back to the factory default state the following reset procedure helps you to reset the modem back to the factory default state To reset the Model XM128 modem back to the factory default state follow these steps 1 Hold the DATA VOICE button down while turning the unit on Continue holding the switch down for 3 seconds after the power switch is turned on 2 Release the switch The Model XM128 modem resets itself back to the factory setting and runs a continuous loopback self test If the modem is connected to a termi
5. 1 2 Introduction Reference Guide for the Model XM128 ISDN Digital Modem Interface Options Several interfaces are available Table 1 1 lists the interface options for the Model XM128 modem as applicable for each region Table 1 1 Interface options XM128NA XM128GE XM128UK XM128AU XM128JP Unit XM128U XM128S XM128S XM128S XM128D Region North America Germany UK Australia Japan Interface U internal NT 1 S T S T S T Internal DSU Auto SPID Switch For the North American ISDN NETGEAR provides an optional 2B1Q U interface to allow direct connection to the network without the use of an external NT 1 device Front Panel For easier management and control of the Model XM128 modem familiarize yourself with the components on the front panel as illustrated in Figure 1 1 and Figure 1 2 Use the key at the bottom of each illustration to identify the panel components 5 cro NETGEAR SDN olji voden XMT a oo E C c rc PWR D Bi B2 AA CP DTR DSR RIS CTS TD RD Ew Ab Bay Networks a Ton 1 2 TEN TEN 7848MEA Key 1 2 PWR power LED 2 ISDN LEDs 3 RS 232 COM LEDs 4 PHONE 1 and PHONE 2 LEDs Figure 1 1 Front panel of the Model XM128 modem with S T interface Introduction 1 3 Reference Guide for the Model XM128 ISDN Digital Modem 2
6. Status Registers and Result Codes D 13 Reference Guide for the Model XM128 ISDN Digital Modem Table D 4 Extended S registers ATSn x continued Command Bit Decimal Hexadecimal Function and description Default or reference 104 n Outgoing service additional for 1TR6 only information n 0 analog adapter PHONE 2 n 2 ISDN data n 3 analog adapter PHONE 1 Fernsprechen a b Dienste Daten bertragung 64 Kbps The defaults are 104 1 for a b adapter 2 s105 reserved 106 7 for ISDN data 107 1 for a b adapter 1 108 n Outgoing service additional for 1TR6 only information n 0 analog adapter PHONE 2 n 2 ISDN data n 3 analog adapter PHONE 1 ISDN Fernsprechen 3 1 KHz Fernsprechen analog Fax Gruppe 3 Daten Uber Modem Aic nmi rnm Btx ber Modem Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Table D 4 Extended S registers ATSn x continued Command Bit Decimal Hexadecimal ins resi 108 n Sl 7 0 00 Daten bertragung 64 Kbps continued X 75 SLP 192 CO Async V 110 64 40 Extensions of async 0 00 Number of data bits 8 32 20 Number of data bits 7 0 00 Number of stop bits 1 16 10 Number of stop bits 2 0 00 No
7. NETGEAR Q merme EXM TS Lo Saee 005 pe ccd c Bay Networks PWR D Bt x AA CP DTR DSR NS TD RD zn T 7847MEA Key 1 PWR power LED 2 2 ISDN LEDs 3 RS 232 COM LEDs 4 PHONE 1 and PHONE 2 LEDs Figure 1 2 Front panel of the Model XM128 modem with U interface LEDs on the front panel of the Model XM128 modem allow you to monitor and diagnose the device Table 1 2 describes each LED Table 1 2 LED descriptions Label Color Activity Description PWR Yellow On Power is supplied to the modem Power ISDN LEDs D Green On The ISDN link on the D channel is active Blinking The modem is attempting to make a connection to the switch B1 On A connection is established to the B1 channel B2 On A connection is established to the B2 channel AA On The Model XM128 modem is in the automatic answering mode CP Blinking An incoming call is ringing On Compression is active on either of the B channels 1 4 Introduction Reference Guide for the Model XM128 ISDN Digital Modem Table 1 2 LED descriptions continued Label Color Activity Description COM LEDs DTR Green On The data terminal or computer connected to the COM port on the Model XM128 modem is ready to communicate DSR On The Model XM128 modem is ready to communicate with the connected data terminal or computer RTS On The data terminal or computer connected to the COM port on the Model XM128 modem is ready to transmit
8. unit ATXn Result Code Option Table Table D 5 lists the different options available when setting the ATXn command The default value for n is 5 when the Model XM128 modem is shipped Table D 5 ATXn command setting options ATVO ATV1 X0 X1 x2 X3 X4 X5 X6 X7 0 OK V V V V V V V V 1 CONNECT V V V V V 2 RING V V V V V V V V 3 NO CARRIER V V V V V V V V 4 ERROR V V V V V V V V 5 CONNECT 1200 96 6 NO DIAL TONE V V V V 7 BUSY V V V V V 8 NO ANSWER V V V V V 9 RINGING V V V V V 10 CONNECT 2400 96 96 96 96 11 CONNECT 4800 12 CONNECT 9600 96 96 14 CONNECT 19200 15 CONNECT 7200 16 CONNECT 12000 17 CONNECT 14400 18 CONNECT 16800 19 CONNECT 38400 Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Table D 5 ATXn command setting options continued ATVO ATV1 X0 X1 X2 X3 X4 X5 X6 X7 20 CONNECT 57600 96 96 96 21 CONNECT 76800 96 96 96 22 CONNECT 115200 96 96 96 23 CONNECT 230400 96 96 96 24 CONNECT 460800 96 96 96 25 CONNECT 921600 96 96 96 26 CONNECT 307200 96 96 96 27 CONNECT 153600 96 96 96 28 CONNECT 102400 96 96 96 29 CONN
9. Connector Pin Assignments Pla Pivo BONING RIO EE T T E 1 RJ 11 Plug and Connector sicsceciissscscanseiionccnneisieseoenrads TENES E 3 Appendix F Serial Port Interface RS 232 Serial Intelfaga isescetascetne cia aibi ocio e o ercats TEN Tm mel Asynchrono us Cable Connecting casaeccsecaseecina aser tta tatur vata dap E vA M RM REA RR PM CUM M UEUE Ya F 2 Appendix G ISDN Reference ISDN CVE VIG M G 1 Bae Wale Pete aT G 2 Out of Band Signaling sicccsmivscacccnnvovacccanveaccssanvorans Ts Terminal Adapter or Digital MOGI occa erm ra c tmieta tasas za meae r acce G 3 ISDN Basic Rate Interface POllS sccarais G 3 SPID SONP etc EL EEN S c UM G 4 Order Form Tor AT amp T SESS Switch NI 1 ISDN i cccisscccusascouscisarnedinencaisioueme G 6 Order Form for DMS 100 Switch NI 1 or Custom ISDN 0 eeecceeeeeeeceeeeeeseeeeeeeeneeaaes G 7 Order Form Tor EWSD NET ISDN 1 3 perit oe OR ROUEN enero G 8 Index x Contents Figures Figure 1 1 Front panel of the Model XM128 modem with S T interface 1 3 Figure 1 2 Front panel of the Model XM128 modem with U interface 1 4 Figure 1 3 Rear panel of the Model XM128 modem with S interface 1 6 Figure 1 4 Rear panel of the Model XM128 modem with U interface 1 6 Figure 2 1 Model XM128 modem connections ssssssssssseneene 2 2 Figure E 1 RuJ 45 plug and RJ 45 connector eeee
10. Reference Guide for the Model XM128 ISDN Digital Modem NETGEAR NETGEAR Inc A Bay Networks Company 48105 Warm Springs Blvd Fremont CA 94539 USA M XM128NA 1 November 1997 1997 by NETGEAR Inc All rights reserved Trademarks Bay Networks is a registered trademark of Bay Networks Inc NETGEAR and FirstGear are trademarks Bay Networks Inc Microsoft Windows and Windows NT are registered trademarks of Microsoft Corporation Other brand and product names are trademarks of their respective holders Statement of Conditions In the interest of improving internal design operational function and or reliability NETGEAR reserves the right to make changes to the products described in this document without notice NETGEAR does not assume any liability that may occur due to the use or application of the product s or circuit layout s described herein Federal Communications Commission FCC Compliance Notice Radio Frequency Notice This device complies with part 15 of the FCC Rules Operation is subject to the following two conditions This device may not cause harmful interference e This device must accept any interference received including interference that may cause undesired operation Note This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in
11. National ISDN 1 ATP2 2 NT DMS 100 network switch Custom ATPO 2 National ISDN 1 ATP1 1 National ISDN 1 ATP2 2 Siemens EWSD network switch National ISDN 1 ATP1 1 National ISDN 1 ATP2 2 Other National ISDN 1 ATP1 1 National ISDN 1 ATP2 2 To set your switch type use AT commands examples given are if your switch type is DMS 100 with Custom Protocol and follow these steps 1 Type ATPO and press Enter You should receive the following response OK Switch Type Northern Telecom DMS 100 2 Type AT amp WZ and Enter to save the settings You should receive the following response OK Configuration 4 5 Reference Guide for the Model XM128 ISDN Digital Modem SPID Setup for North America SPID numbers are needed unless your switch type is AT amp T SESS with Point to Point Protocol The ISDN switches use SPID numbers to represent the subscribed network services Each SPID corresponds to one terminal end point identifier Different switches might provide different rules for the SPID number format You should get the SPID number from your local telephone company To program your SPID number s use AT commands n is the SPID provided by your telephone company and follow these steps 1 Type ATSPIDO n and Enter You should receive the following response OK SPID Correct It might take up to 30 seconds for the response This response indicates that the SPID number was accepted If a second SPID is required
12. Clears buffer and starts the embedded protocol analyzer Captures data immediately and starts the timer ATC Invokes the interpretation function of the embedded protocol analyzer and displays the results on the DTE screen 10 6 Troubleshooting Reference Guide for the Model XM128 ISDN Digital Modem The analyzed results can be viewed as if contained in a full screen editor Several number keys are used to control the display For PC users it is convenient to use the keys on the numeric keypad make sure that Num Lock is on The functions of the control keys are listed in Table 10 4 Any other key pops up the control menu Table 10 4 Control key functions Key Function Description 1 End Display to the end of buffer 2 Cursor down Scroll one line up 3 Page down Display the next page 7 Home Display the first page 8 Cursor up Scroll one line down 9 Page up Display the previous page Q q Quit Quit embedded protocol analyzer Troubleshooting 10 7 Appendix A Technical Specifications This appendix provides the technical specifications for the Model XM128 ISDN Digital Modem General Specifications Network Protocols and Standards Compatibility WAN Protocols Multilink PPP BACP PPP V 120 V 110 X 75 ISDN Standards National ISDN 1 North America AT amp T 5ESS Custom North America 1TR6 Europe Nortel DMS 100 North America EURO ISDN ETSI
13. During power on test it checks the hardware configuration and follows the initialization procedures of the specific interface Modem Upgrade 9 1 Reference Guide for the Model XM128 ISDN Digital Modem Upgrade Instructions To upgrade your Model XM128 modem turn the modem on and follow these steps 1 2 Start any communications program that supports the X modem Protocol Enter the command ATUPX Your Model XM128 modem responds You have chosen Xmodem 128 octets of data with checksum protocol to update your ISDN modem Data in Flash ROM will be erased Are you sure Y N Press Y The following message appears Start programming please upload Use the X modem Protocol to upload the file ONETd vvv to your Model XM128 modem This step updates the flash EEPROM of the modem with the new firmware When installation is complete the Model XM128 modem restarts automatically Kernel Mode In the unlikely event that your Model XM128 modem fails to respond to AT commands after upgrading the EEPROM turn on power to the modem The reset prompts the modem to check the integrity of the codes in the flash EEPROM If proper valid firmware cannot be verified the modem initiates kernel mode When the Model XM128 modem is in kernel mode you can issue limited AT commands Start from step 2 of the upgrade instructions on this page 9 2 Modem Upgrade Chapter 10 Troubleshooting This chapter provides quick easy ref
14. E Connector Pin Assignments Note German NETGEAR customers The inner two pins of the RJ 11 are used for the Tip and Ring or a and b signals in Germany the two signals that connect to a telephone set This is the standard pin assignment but some BZT approved telephones use the outer two pins for a and b If this is the case use the attached TAE adapter which has a unique interface definition or use an RJ 11 cable that connects the inner pins on one end and the outer pins on the other end Analog Call Handling 8 1 Reference Guide for the Model XM128 ISDN Digital Modem AT Commands for Analog Calls Table 8 1 lists some of the most frequently used AT commands Table 8 1 Frequently used AT commands AT Command Description of command ATDAs Automatically dials out for device connected to PHONE 1 The number string to dial is represented by the letter s ATDBs Automatically dials out for device connected to PHONE 2 AT amp V6 View current setting of analog adapter PHONE 1 AT amp V7 View current setting of analog adapter PHONE 2 AT amp LO Assign analog calls to PHONE 1 if the line is not in use orATS84 5 0 AT amp LI Assign analog calls to PHONE 2 if the line is not in use orATS84 5 1 AT amp ZIn s MSN setting assign called phone number s to be answered by n port where n 6 for PHONE 1 and n 7 for PHONE 2 AT amp ZI6 s Assign the called phone number for analog adapt
15. Ji reat pobre rt bIU Rota Etro ae EPI dup ae dtu 6 10 Answering a V 110 Call 1er itte rrins Pere Oo NEED OE DERE etree errr aa d Ud Parna le M Se E ET EET 6 10 M 2T ISDN Communications odio ciour Pac cR eie MR ELS cU URp tci e au dM FEL DO Le AUR 6 11 Selecting V 120 for European ISDN DSS1 Switch seeessss 6 11 Selecting V 120 for German National ISDN 1TR6 eee 6 11 unc i gpokc Apis Maeem ce c ur es Making WD AN eM a E 6 12 Conigunng the V120 GS sinaksenan aae aana aAa 6 12 Dialing in V 120 Mode duper E RA pioua prede icum dd Making s Bundled Call with V120 uuurccsseseber detta er hide erae n pana 6 13 identifying Your Line Provisioning asuceceiekeecn intet eb kk Re tak eh c 6 14 128 Kbps SDSDUS uuiiissasuesiiin pesi bn renaire drama de avi paa sud p sa op ecd ie 6 15 Dialing Prestered Phone Numbers 1er denen enar rd rr Rer xx 6 15 Error Correction and Data Compression with V 120 6 15 A 175 ISDN Communications EUFODB ioannes aoa pa asuma aph aaa ana EE Pads 6 16 Answering an A75 CAA Mer 6 16 e e eec c cH p c Ed Making a Bundled Call wih PB seissen 6 17 Dialing Prestored Phone Numbers cc ccceceeeeeeeeeeeeeeeeeeseeeesaeeeeeeaaes 6 18 Invoking V A2bis Data COmpressiQlt uuoccs score cic teet ce tete eas 6 18 Bundle Connection with V 42bis Data Compression se 6 19 Contents vi
16. XM128KO 0 M1 XM128KO 0 Korean XX Preface Chapter 1 Introduction Congratulations on your purchase of the NETGEAR Model XM128 ISDN Digital Modem The Model XM128 modem sets a new price and performance standard for the rapidly growing Internet and telecommuting applications When used with off the shelf Internet or remote access client software the Model XM128 modem enables mobile or home users to easily connect to the Internet or branch offices over Integrated Services Digital Network ISDN lines The same device also allows a user to connect to the analog world via a modem fax machine or telephone connected directly to the Model XM128 modem To take advantage of constant new developments the Model XM128 modem employs flash EPROMs which allow for convenient uploading of newly available firmware that preserves your hardware investment The Model XM128 modem supports both D and B channel protocols For the D channel it supports DSS1 1TR6 DMS 100 AT amp T Custom and NI 1 For the B channel it supports X 75 SLIP V 120 V 110 PPP Async to sync Conversion and Bundle 128 Kbps With its Hi fn LZS or V 42bis compression on the B channel using either X 75 or V 120 the Model XM128 modem can effectively communicate at speeds up to 460 kilobits per second Kbps over ISDN lines Features The Model XM128 modem supports a variety of compression schemes including V 42bis and Hi fn LZS Compression STAC and communicates effectivel
17. and levels B 1 serial port 1 7 serial port interface F 1 simplex mode C 1 SLIP 5 1 Speech bearer 5 3 SPID numbers 4 6 G 4 S register descriptions D 4 extended D 5 setting D 2 values 7 2 viewing D 1 Status Register See S register subaddresses 7 3 switches Northern Telecom 5 2 T technical specifications A 1 terminal adapter G 3 terminal programs 4 2 troubleshooting 10 1 U United Kingdom configuration for 4 7 upgrading with flash EPROM 9 1 user to user information 7 13 Index Reference Guide for the Model XM128 ISDN Digital Modem V V 110 call answering 6 10 making a call 6 10 V 120 answering incoming calls 6 12 6 13 bundled call 6 13 configuring 6 12 dialing out 6 13 error correction and data compression with 6 15 making a bundled call with 6 13 selecting for European ISDN 6 11 V 42bis data compression 6 18 W World Wide Web iv X X Answering a call 6 16 bundled call 6 17 ISDN communications for Europe 6 16 making a call 6 17 prestored phone numbers 6 18 Index
18. automatically with the Multi Auto answer Routine Otherwise the handshake fails Selecting V 120 for German National ISDN 1TR6 With a 1TR6 switch data connections are achieved by setting the Service Indicator to 7 Daten_bertragung 64Kbps and using the Additional Information octet to select B channel protocols Because there is no predefined code for asynchronous V 120 the Model XM128 modem uses the synchronous V 120 code to fill in the additional information octet This approach might not work all the time ISDN Overview 6 11 Reference Guide for the Model XM128 ISDN Digital Modem Answering a V 120 Call In most cases there is no need to configure the Model XM128 modem to properly answer calls The Model XM128 modem decides which protocol to use by detecting the type of data that is received You only need to set SO to greater than or equal to 1 in order for the modem to automatically answer an incoming call If SO 0 the DCE simply reports RING to your terminal and sounds a ring notification One exception to this is when the ISDN data call is carried through speech bearer In this case you would need to make an MSN entry for the phone number from which you are expecting the data over speech bearer call to be coming For V 120 protocol use AT amp ZI2 n Refer to Data over Speech Channel on page 6 7 Making a V 120 Call Some switches transmit all network signals through the D channel out of band signaling allowing
19. based on various standards that define communications between switches and the equipment that connects to the switches These standards allow most types of equipment to communicate across different types of switches in every part of the world Implementation of network switches by telephone companies differs from country to country In North America a separate ISDN standard called National ISDN NI 1 is currently being adopted by network providers and equipment manufacturers When fully implemented NI 1 will make installation of ISDN equipment much easier Currently many different types of custom signaling protocols are used Therefore you must configure your Model XM128 modem for the type of signaling that is used by your network In the rest of the world Digital Subscriber Signaling Number 1 DSS1 is widely deployed with minor differences from country to country In Germany there is an old ISDN system called 1TR6 which will be replaced gradually by DSS1 ISDN Reference G 1 Reference Guide for the Model XM128 ISDN Digital Modem Basic Rate Interface When you order a Basic Rate Interface BRI ISDN line you receive what is known as the 2B D service This service provides two B channels that can transmit at 64 Kbps per channel for user information and a D channel that can communicate between the user and the ISDN network at 16 Kbps The D channel is used to manage communication between the equipment and the switch It is used m
20. callus Multilink PPP uou doce diocesi nett peces paese 5 3 Dialing Pre stored Phone NUmImbalsi 12e eret cx Rink ate 5 4 Endpoint Discriminator 12 nitatis at eias TM TA T T Call Bumping Dynamic Channel Allocation usen nre rr nro 5 5 Chapter 6 ISDN Overview Commands Tor Outgoing Cale eem 6 1 Dialing Out Using ISDN ORB ciscccnccniearcinarataiiussiaianis a a a 6 1 Dialing Out Using ISDN Mode Optional Speech Bearer Service 6 2 Dialing Out for Analog Adapter POND uusseecisesss taa perros a etos Aat a Roa DrU 6 2 Dialing Out for Analog Adapter Port 2 1i ctiain t it ka req R RE Ra saa XR R E ndr 6 2 Manually Switching Communication Modes si c ciciciccsceresssies pasate panca rain 6 2 ag wig Ler mU 6 3 vi Contents Reference Guide for the Model XM128 ISDN Digital Modem commands Tor COMET CaS zr m 6 4 Exeital DU assiettes ud tetra eee odas Ond Ue ELMO waiter i bet ee I DE Ae taut 6 4 Determining the Packet eji T 6 5 A ewornng a Gal Using MON Rc 6 6 Data over Speech Channel aisasccestivasccacaesadcnneeendtacrerossticniveisciicivernitiemsaitcam DI Bestefort Call ANSWErNO sorires E a a R 6 7 Ambiguity Resolution Switch for Voice Calls eeee 6 8 Multi Auto Answering of Data Calls TOL TES TEN TENDO Understanding ISDN Communication Protocols eeeeeseeseeseeeeeneneeeennnn 6 9 V110 ODN COR ONS cuia as ciupttat x pua et
21. command is designed for testing the readiness of your ISDN line that uses one B channel B1 to place a call to itself and uses the other B channel B2 to receive the call This test is a modem loopback test To make your test call follow these steps 1 Enter the command AT amp ZOlI your isdn number Your Model XM128 modem responds with OK Enter the command AT amp T11 Your Model XM128 modem responds with OK Dial your isdn number Loop from B1 to B2 through the switch established Sending and receiving data B1 B2 loopback test successed Disconnecting NO CARRIER The modem loopback test is complete The Diagnostic Command The ATCG command is used to test and isolate fault if there are any hardware problems in the Model XM128 modem Some of the tests are interactive operations Follow the instructions prompted on the screen to carry out the tests If the modem is in the normal condition the test results printed on the screen are as follows System address amp data Dus test sce9 ewe Ue Sheree ee OK Hayer L hardware Test 52m ig eects Le IRI KA NEC URL Ne PIE EO erae OK Layer 2 Hardware test ese e REV EE iraina Goes OK Layer 1 activation test eee eee OK First B channel hardware test oj eel eoe Nor wor De esate nnn OK Second B channel hardware test cere OK Listen to the Ring and then pick up phone set 1 Va Off hook action is detected Hook Interrupt
22. device telephone or fax Figure 2 1 Model XM128 modem connections 2 2 Installation Reference Guide for the Model XM128 ISDN Digital Modem To install your Model XM128 modem follow these steps 1 Connect the male end of the 25 pin cable to the RS 232 COM port of the Model XM128 modem 2 Connect the other end of the 25 pin cable female end to the serial COM port on your computer Note If your computer has a 9 pin serial connector use a 25 pin to 9 pin converter 25 pin male to 9 pin female If you have a Macintosh a special cable is needed for the connection 3 Using the ISDN cable that is included connect the RJ 45 connector on one end of the cable to the ISDN port on the back of the Model XM128 modem 4 For European models connect the other end of the RJ 45 ISDN cable to your NT 1 terminal or S T interface Using the proper cable supplied with your NT 1 connect your NT 1 or U interface to the wall jack installed by your phone company 5 For North American models connect the other end of the RJ 45 ISDN cable to the wall jack installed by your phone company 6 Using the proper cable insert the round end of the power adapter in the POWER connector on the rear panel 7 Plug the power supply unit into an AC wall outlet 8 Turn the power on to your Model XM128 modem 9 Turn the power on to your computer Verifying Hardware Installation When the installation is complete and power applied t
23. lle c ER D 3 Table D 3 Basic S registers ATSnzx sss eene nens D 4 Table D 4 Extended S registers ATSnzx sssssseeee eren D 5 Table D 5 ATXn command setting options seees D 19 Table D 6 RHesult code cliart 4 oin iniece itecto t nit es Las date fie wee D 21 Table D 7 Result code field descriptions s D 22 Table D 8 Gonnectstririgs ince ete mele RIED t ED desee Tre det D 23 xiv Tables Table E 1 Table E 2 Table E 3 Table F 1 Table F 2 Table G 1 Table G 2 Table G 3 RJ 45 plug and RJ 45 connector pin assignments for the S T interface E 2 RJ 45 plug and RJ 45 connector pin assignments for the U interface E 2 RJ 11 connector pin assignments ssseeeeen E 3 Serial potrtiinterface 1 ett eie eter beca eem tete egere fa F 1 Asynchronous flow control cable connection sssssssssss F 2 ISDN line configuration ssssssseseeeneneene enne G 6 ISDN line configuration ssssssssssseeeneeeneee nne G 7 ISDN line configuration sssssssesseeeeenneennnen nennen G 8 Tables XV xvi Tables Preface Congratulations on your purchase of the NETGEAR Model XM128 ISDN Digital Modem The NETGEAR Model XM128 modem provides connection for one or more PCs to the Internet or to the office over ISDN Integrated Services Digital Network lines The mo
24. of the this command The command ATEPD can be used to view current setting of the Endpoint Discriminator Address Note The Endpoint Discriminator option is not required in most cases thus users don t have to change the default settings The system administrator of your corporate or the Internet service provider provides these values if the Endpoint Discriminator option is required Call Bumping Dynamic Channel Allocation When call bumping Dynamic Channel Allocation DCA is enabled by default you can place or answer a voice call and only one from a device that is attached to one of the phone ports The call can be placed while a Multilink PPP call is active The Model XM128 modem automatically removes one of the Multilink PPP connections and uses it for the voice call When the voice call ends the Model XM128 modem automatically reestablishes that channel for Multilink PPP operation The call bumping DCA function is only effective when the Model XM128 modem is at the calling site the client site The following command can be used to select the DCA function ATCEO disables call bumping ATCE1 enables call bumping by default Async to Sync PPP 5 5 Chapter 6 ISDN Overview This chapter covers the procedures for initiating and receiving calls over digital lines using your Model XM128 ISDN Digital Modem Commands for Outgoing Calls The Model XM128 modem uses the following three modes to send communication
25. olol oja AJA 921600 bps S21 Bitmapped register 1 2 eo Speaker is always off MO Speaker is on until carrier is detected M1 Speaker is always on M2 DSR is always on amp S0 According to CCITT See also S register 844 4 and S41 5 amp S1 CD is always on amp CO 16 10 CD tracks presence of data carrier See also S register 38 3 amp C1 Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Table D 4 Extended S registers ATSn x continued Command Bit Decimal Hexadecimal F nction ano Dera lt or description reference S21 6 7 0 0 Assumes that Data Terminal amp DO continued Ready DTR is always on 64 40 108 1 DTR off on transition amp D1 causes dial of the default number 128 80 108 2 DTR off causes the Model amp D2 XM128 modem to hang up and return to command state 192 CO 108 2 DTR off causes the Model amp D3 XM128 modem to hang up and resets the Model XM128 modem to profile 0 after DTR dropped S23 Bitmapped register 105 0 0 0 Command echo is disabled EO 1 1 Command echo is enabled E1 2 0 0 Insertion is not allowed during a PHONE call 4 4 Insertion is allowed during a PHONE call 3 5 0 0 ATXO see result code table 8 8 ATX1 dec hex AT 16 10 ATX2 40 28 X5 24 18 ATX3 48 30 X6 32 20 A
26. over your ISDN network ISDN data e Analog port PHONE 1 communication e Analog port PHONE 2 communication These modes are automatically switched based on the commands you issue To understand this process use your terminal program and proceed with the instructions explained in the following sections Dialing Out Using ISDN Mode The command ATDI tells your Model XM128 modem that you want to make an ISDN data call and to therefore use the ISDN mode to call out Enter ATDI17142630398 This command initiates an ISDN call ISDN Overview 6 1 Reference Guide for the Model XM128 ISDN Digital Modem Dialing Out Using ISDN Mode Optional Speech Bearer Service The Model XM128 modem supports ISDN data utilizing Speech Bearer Service To enable this function you need to set S register S83 bit 7 to 1 ATS83 7 1 This function is useful in the areas where ISDN service providers charge lower usage rates for voice speech calls To enable this function enter ATS83 7 1 To disable it enter ATS83 7 0 Dialing Out for Analog Adapter Port 1 Using the A command following the ATD tells your Model XM128 modem to switch the call to analog adapter port PHONE 1 when dialing is complete Enter ATDA17146930762 Note You must have an analog modem connected to your plain old telephone service POTS port before you issue this command Dialing Out for Analog Adapter Port 2 Using the B command following the ATD tells
27. the COM port that is connected to the Model XM128 modem In most cases when the terminal program is active and ready to communicate with the connected port the DTR signal is activated and the DTR LED lights If the DTR LED is off check the terminal program settings The communication speed can be set between 110 bits per second bps and 460 8 bps but 115 2 bps is a good default value The Model XM128 modem automatically adjusts its speed to match the communication speed you set 4 4 Configuration Reference Guide for the Model XM128 ISDN Digital Modem Switch Type Setup for North America In North America the popular types of switches are AT amp T 5ESS Northern Telecom DMS 100 and Siemens EWSD All of these switches run software that either conforms to the National ISDN 1 standard or a custom version The Model XM128 modem supports the six different combinations listed in Table 4 4 The value for n in the ATPn command is shown in the AT command column The ATPn command programs the D channel protocol so that the Model XM128 modem works with the type of switch that is connected to your ISDN line Table 4 4 Switches supported by the Model XM128 modem ISDN network switch Switch version AT command Number of SPIDs AT amp T 5ESS network switch Point to point Protocol ATP4 0 Point to multipoint Protocol ATP5 1 Point to multipoint Protocol ATP6 2 National ISDN 1 ATP1 1
28. the DTE speed may reach 460 Kbps This circumstance makes the normal RS 232 serial port of the DTE unsuitable for bundle applications A special I O card on the computer side is required in this situation for external models ISDN Overview 6 19 Chapter 7 Advanced ISDN This chapter provides information about using advanced ISDN for the Model XM128 ISDN Digital Modem Call Control for DSS1 In order to initiate a Digital Subscriber Signaling 1 DSS1 ISDN call two information elements are necessary e The bearer capability element indicates what kind of bearer service is desired It is also used for compatibility checking in the addressed entity e The called party number element provides necessary information for the telephone company central office CO to direct the call to the destination The following optional information elements are also pertinent to call control e High layer compatibility e Low layer compatibility e Calling party number e Called party number e Calling party subaddress e Called party subaddress Advanced ISDN 7 1 Reference Guide for the Model XM128 ISDN Digital Modem Control of Outgoing Service Indicator The high layer compatibility and low layer compatibility information provides a means for compatibility checking by the called party This information is transferred transparently by the ISDN network between the call originating entity for example the calling user and the addr
29. the local modem With a Type 2 connection the remote terminal is prompted to enter the password at the initial connection The local Model XM128 modem matches the entered password with the prestored password list Security Functions B 1 Reference Guide for the Model XM128 ISDN Digital Modem The two types of security are summarized in Table B 1 Table B 1 Types of security Type 1 Security Type 2 Security Remote Calling Site NETGEAR ISDN device only Can be modem of any brand Password Check Automatic Interactive Protocols Supported X 75 V 120 Any data protocol AT Commands G1 for Level 1 security G3 for Level 1 security G2 for Level 2 security G4 for Level 2 security G5 for Level 3 security Level 1 Security This security level performs only password checking With Level 1 security the local modem maintains the connection if the password is matched Otherwise the line is disconnected Level 2 Security Level 2 security provides extra calling party number CPN checking and callback The callback number is prestored in the password table If the password has been matched in a maximum of three tries over a 40 second time period with its prestored password list the local modem checks the calling party number or origination address for 1TR6 against the prestored number corresponding to the password If they are matched the local modem chooses either to keep the connection or to discon
30. the numbering system to be used for display e ATS84 3 0 for decimal format e ATS84 3 0 for hexidecimal format Status Registers and Result Codes D 1 Reference Guide for the Model XM128 ISDN Digital Modem 2 Type the amp Vn command AT amp Vn to view all of the S register settings To view different S register settings use the following for n e 0 for viewing S register settings for current active profile e to4 for viewing settings for user profile number n 1 e 5 for viewing the factory default settings e 6 for viewing the setting of PHONE 1 e 7 for viewing the setting of PHONE 2 3 Type the command ATSr b to display the value of bit b of S register r Setting S Registers In the commands to change the value in S register r and to change the value in a specific bit of S register r n is a decimal number in the given range Although the first command modifies all bits in the S register simultaneously the second command lets you change bit b without affecting other bits in this S register When using ATSr n do a conversion to or from the binary number to find out which bits to manipulate To change the S register values follow these steps 1 Type the command ATSr n range 0 255 to change the value in S register r to value n 2 Type the command ATSr b n range 0 1 to change the value in a specific bit b of S register r Examples for Setting S Registers Note The values used in the examples differ from the actu
31. your Model XM128 modem to automatically switch the call to analog adapter port PHONE 2 when dialing is complete Enter ATDB17146930762 Manually Switching Communication Modes The manual switching function is necessary only if your communication software does not allow you to change your dial up string 6 2 ISDN Overview Reference Guide for the Model XM128 ISDN Digital Modem Conventional dialing commands ATD ATDT and ATDP used by much of the existing communication software can be mapped onto one of the new dialing commands according to the AT amp O setting as shown in Table 6 1 Table 6 1 Dialing commands AT Command _ Dial string it maps to AT amp OO ATD ATDT and ATDP are the same as ATDB AT amp O2 ATD ATDT and ATDP are the same as ATDI AT amp OS3 ATD ATDT and ATDP are the same as ATDA The factory default is AT amp O2 which means that the Model XM128 modem selects ISDN data mode when you do not specify the communication mode to use that is ATD or ATDT Placing the Call To initiate a call choose the proper communication mode and configure the mode according to the bearer service or protocol you want to use Table 6 2 contains some simple commands that are useful when placing a call Table 6 2 Call placing commands Command Description ATBnn Changes ISDN B channel protocol setting ATDL Redials the last dialed telephone number ISDN Overview 6 3
32. 0 Profiles available 0 3 Model XM128 modem should respond with OK All of the above commands can be simplified by combining all the commands onto one line for example AT amp B20 amp EI amp W ZO Dialing in V 120 Mode Finally use the ATDn command to make the call n is the phone number you want to dial Once the connection is made you should see the following connect messages CONNECT 115200 V120 56000 LAPD This message indicates that the connection is made with the following specifications e DTE speed of 115 2 Kbps e Protocol V 120 e Data speed of 56 Kbps e Error Control LAPD Making a Bundled Call with V 120 A bundled V 120 connection is initiated at the calling site when ATB20 B channel protocol V 120 has been selected and the channel bundling mode has been enabled by an AT amp J3 command The channel bundling command AT amp J3 must be set on both the calling and receiving sides otherwise a single channel connection is made To set up your Model XM128 modem to make a bundled V 120 connection follow these steps 1 Enter ATB20 set B channel protocol to V 120 2 Enter AT amp J3 set the Model XM128 modem to make a bundled call ISDN Overview 6 13 Reference Guide for the Model XM128 ISDN Digital Modem 3 Enter AT amp WZ if you want to save the setting After these commands are entered the ATD command generates two consecutive setup messages to invoke bundle initiation For the Nor
33. 0 56000 74 PPP async to sync 64K 75 PPP async to sync 56K 76 SLIP to sync HDLC conversion 64K 77 SLIP to sync HDLC conversion 56K S83 Bitmapped register 000 0 0 0 Disables loopback 4 test CPO 1 1 Enables loopback 4 test CP1 2 0 ISDN without V 42bis amp K00 4 4 ISDN with V 42bis if applicable amp K44 4 5 0 0 ATDs ATDPs and ATDTs are amp O0 mapped to ATDMs 32 20 ATDs ATDPs and ATDTs are amp O2 mapped to ATDIs 48 30 ATDs ATDPs and ATDTs are amp O3 mapped to ATDBs Status Registers and Result Codes D 11 Reference Guide for the Model XM128 ISDN Digital Modem Table D 4 Extended S registers ATSn x continued Command Bit Decimal Hexadecimal Function and description Default or reference S84 Displays S register value in hex format Indicates Caller ID after the 1st RING message 10 Disables Caller ID indication PHONE 1 Model XM128 modem or analog port 28641 has higher priority for answering an analog call amp LO 32 20 PHONE 2 Model XM128 modem or internal device 28641 has higher priority for answering an analog call amp L1 S85 DCA function 0 DCA function is disabled CEO 1 DCA function is enabled CE1 0 Add persist time interval KAxn S85b1 6 is in Second unit KASn 128 80 S85b1 6 is in Minute unit KAMn S86 D channel protocol selection USA this register i
34. 28 ISDN Digital Modem 9 Select the Model XM128 modem driver with the protocol that your host is using Generally the following examples work However we recommend that you verify the protocol your Internet service provider ISP uses If you are connecting to an Internet service provider ISP select ETGEAR XM128 PPP 64K If the ISP has not upgraded to an ASCEND compatible server select ETGEAR XM128 V 120 64K If you are calling another location such as a BBS system select ETGEAR XM128 V 120 64K If you dial up to CompuServe select ETGEAR XM128 V 120 64K If you are calling the Microsoft Network MSN ISDN line select ETGEAR XM128 PPP 64K 10 After you have completed the selections above click on Next 11 Select the COM port your modem is connected to and click on Next A final dialog box will appear 12 Click on Finish The Modems Properties screen is displayed 13 Click on Close This step completes the installation of your Model XM128 modem driver You may now use programs such as Dial Up Networking with your modem 3 2 Setup for Windows 95 and Windows NT 4 0 Chapter 4 Configuration This chapter describes the procedures for configuring your Model XM128 modem and your ISDN line Configuring Your ISDN Line and Network The setup procedure for the Model XM128 modem needs to be done only once The settings are stored in the nonvolatile random ac
35. 400bps ATB14 User rate 4800bps ATB15 User rate 9600bps ATB16 User rate 14400bps ATB17 User rate 19200bps ATB18 User rate 38 4 Kbps ATB19 User rate 57 6 Kbps Japanese version only 6 10 ISDN Overview Reference Guide for the Model XM128 ISDN Digital Modem The highest asynchronous V 110 user rate depends on bit 4 of 119 as follows e 119 4 0 19 2 Kbps e 119 4 1 38 4 Kbps for areas other than Japan e 119 4 1 57 6 Kbps for Japanese version If the DTE speed is higher than what has been set the user rate in Table 6 6 is used The X bits in the 80 bit frame are used for remote flow control V 120 ISDN Communications This section describes how to set up and configure your Model XM128 modem with the V 120 ISDN protocol Refer to Table 6 5 on page 6 9 for the ISDN protocol specifications Selecting V 120 for European ISDN DSS1 Switch With European ISDN V 120 is an option in the bearer capability BC information element which is a mandatory information element in the setup message Although we can specify V 120 in the low layer compatibility LLC information element some switches just do not deliver the LLC Other switches do deliver the LLC but the V 120 selection is discarded midway If the called modem does not get any B channel protocol information from the incoming setup message and the remote device is a NETGEAR ISDN device the Model XM128 modem can identify the V 120 protocol
36. 42bis it ignores the XID or replies using an XID frame with a V 42bis reject or empty information field The calling site assumes that the remote site is unable to execute V 42bis if it gets no reply fora period of time after sending the request XID In this situation normal connection without data compression is established It takes about 2 seconds for the calling Model XM128 modem to send XID and wait until timing out If you know in advance that the called site has no V 42bis capability it would be better to issue the AT amp K00 command beforehand in order to get a quick connection 6 18 ISDN Overview Reference Guide for the Model XM128 ISDN Digital Modem Although not defined in X 75 the XID frame is based on the encoding in ISO Standard 8885 and on being used in V 42 V 42bis In addition to the compression parameters XID can be used to negotiate such packet parameters as window or packet size Bundle Connection with V 42bis Data Compression If both sites have set AT amp K44 to enable V 42bis negotiation XID frames can be exchanged through the main B channel which corresponds to the call established by the first setup message Only one data compression channel can be used in bundle connection which means that the compression is done before packet disassembly and the decompression is done after packet assembly The compression ratio of V 42bis is commonly recognized as up to 4 1 for text files If the line speed is 128 Kbps
37. B channels allowing connection speeds of 128Kbps MPPP support is a standard feature of the Model XM128 modem Making a call using Multilink PPP A Multilink PPP connection is initiated at the calling site when ATB40 B channel protocol HDLC PPP has been selected and the Multilink PPP mode has been enabled by an AT amp Jn command AT amp JO disables Multilink PPP AT amp J1 enables Multilink PPP in answer mode only AT amp J2 enables Multilink PPP in call mode only AT amp J3 enables Multilink PPP in both call and answer modes By default the Model XM128 modem dials the same number for both Multilink PPP connections If the destination you are dialing requires two different telephone numbers to establish a two channel Multilink PPP connection then the following command can be used ATDIphone number 1 phone number 2 The phone numbers of the destination are determined by the commands phone number 1 and phone number 2 are the phone numbers of the destination If the destination refuses the Multilink PPP during the Link Control Protocol LCP negotiation a single B channel PPP connection is established The connection message is the same whether the Multilink PPP connections have been established or not Async to Sync PPP 5 3 Reference Guide for the Model XM128 ISDN Digital Modem Dialing Pre stored Phone Numbers The ATDSn command n 0 1 39 dials the n 1 th phone number twice for both of the Multilink PPP conne
38. C 1 lists the basic AT command set Table C 1 Basic AT command set Command _ Options Function and description A Re executes the last command once A gt Reexecutes the last command once or repeats the last call up to 9 times You can abort this command by pressing down on any key on the keyboard or front panel This command is also aborted when a successful connection with a remote modem is made See also S register S8 For a description of Basic S registers refer to Table D 3 on page D 4 in Appendix D Status Registers and Result Codes Pressing any Terminates the current connection attempt when any key is pressed key Exits the data transfer state and begins the command entry state A Goes online in answer mode See also S registers 39 2 and S43 6 Fora description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes C 2 AT Command Set Reference Reference Guide for the Model XM128 ISDN Digital Modem Table C 1 Basic AT command set continued Command _ Options Function and description Bnn Select ISDN Teleservice B must be followed by two digits See also S registers 82 and 102 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes B00 X 75 Transparent B01 X 75 T 70 B04 BTX
39. Data X J B10 V 110 user rate follows DTE speed async or V 110 user rate determined by in band negotiation sync B13 V 110 user rate 2400 bps See also S register 117 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes B14 V 110 user rate 4800 bps B15 V 110 user rate 9600 bps B16 V 110 user rate 14400 bps B17 V 110 user rate 19200 bps B18 V 110 user rate 384000 bps sync only B19 V 110 user rate 576000 bps sync only B20 V 120 B40 PPP async to sync conversion B41 SLIP async to sync conversion CEn Call bumping for MPPP and CCB See also S register 85 0 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes CEO Disable call bumping function CE1 Enable call bumping function CH Display the accumulated charging unit of the last call Cl lt prefix gt Prefix number string to be added to the Calling party number before indicating to the DTE when the type of number denotes international CLn n 0 2048 Maximum size of user data in a packet number of octets CL Inquire current setting of ATCLn CN lt prefix gt Prefix number string to be added to the calling party number before indicating to the DTE when the type of number denotes national AT Command Set Reference C 3 Reference Guide for the Model XM128 ISDN Digital Modem
40. E 1 AT amp Zl6 telephone number PHONE 2 AT amp ZI7 telephone number For example to assign an MSN number for a V 120 call type the command AT amp ZI2 5553434 7 Type the AT command AT amp W0Z0 to store the information into NVRAM Configuration Chapter 5 Async to Sync PPP This chapter describes the application of asynchronous to synchronous HDLC conversion Internet and Remote Access PPP and SLIP More and more Internet Service Providers are offering their services through dial up ISDN lines for higher data bandwidth The equipment used by your service provider frequently consists of ISDN LAN routers which unlike a digital modem do not have asynchronous capability For this reason terminal adapters that support only V 120 or asynchronous protocol do not work with this type of equipment The Model XM128 modem converts the asynchronous data it receives from your computer to synchronous format in order to communicate with ISDN LAN routers We call this process asynchronous to synchronous HDLC conversion or Async to Sync PPP Point to Point Protocol or Async to Sync Serial Line Internet Protocol SLIP protocol Making Async to Sync PPP and SLIP calls In order to communicate with an ISDN LAN router from vendors such as Ascend and Cisco set the Model XM128 modem B channel protocol to one of the following ATB40 lt Enter gt HDLC PPP or ATB41 lt Enter gt HDLC SLIP You should also s
41. ECT 61440 96 96 96 30 CONNECT 51200 96 96 96 96 31 CONNECT 62400 96 96 96 96 32 CONNECT 124800 96 96 96 33 CONNECT 62400 96 96 96 96 34 CONNECT 41600 96 96 96 35 CONNECT 31200 96 96 96 96 36 CONNECT 249600 96 96 96 96 37 CONNECT 20800 96 96 96 38 CONNECT 33600 96 96 96 96 39 CONNECT 28800 96 96 96 96 40 CONNECT 26400 96 96 96 96 41 CONNECT 24000 96 96 96 42 CONNECT 21600 96 96 96 43 CONNECT 48000 96 96 96 96 44 CONNECT 56000 96 96 96 45 CONNECT 64000 96 96 96 96 46 CONNECT 112000 96 96 96 47 CONNECT 128000 96 96 96 Use S42 6 to disable RINGING result code D 20 Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Result Code Chart Symbol Reference Table D 6 lists the result codes Table D 6 Result code chart V Supported 96 Reports the DTE Speed as cr If CONNECT DTE_Speed lt cr gt lt lf gt CONNECT DTE Speed Protocol DCE Speed Error Control Example CONNECT 115200 V120 64000 LABD cr If5 CONNECT DCE Speed Error Code cr lf7 Example CONNECT 64000 ARQ CONNECT DCE _Speed Error_Code Error_Control Example CONNECT 64000 ARQ V42b Status Registers and Result Codes D 21 Reference Guide for the Model XM128 ISDN Digital Modem Result Code Field Descriptions Tabl
42. F 69 e N8 for national standard numbering plan e N9 for private numbering plan Zn specifies the type of the subaddress e ZO for NSAP Rec X 213 with AFI 0x50 IAS characters default if Zn is omitted e Z2 for user specified IA5 characters The called party number or an appropriate part of it is sent to the addressed entity The called party subaddress is transferred transparently by the ISDN network to the destination Use ATDL to redial the last dialed telephone number and or subaddress Placing a Call for 1TR6 The ATDx Yn Nn destination address command is used for dialing as follows x I ISDN data A the analog adapter 1 or B the analog adapter 2 Yn specifies the type of address e YO for unknown default if Yn is omitted e YI for international number e Y2for national number Nn is the identifier of numbering addressing plan e NO for unknown default if Nn is omitted NI for ISDN numbering plan Rec E 164 The destination address is the ISDN phone number of the called party The last digit of this number is the EAZ Use ATDL to redial the last dialed ISDN phone number 7 12 Advanced ISDN Reference Guide for the Model XM128 ISDN Digital Modem User To User Information The Model XM128 modem supports user to user information exchange via the D channel To transmit a message use the ATT4 lt message gt command The angle brackets lt gt are part of this command The message is i
43. GEAR Technical Support Capturing the Protocol Data The data captured by the EPA is classified into three categories e B channel user data protocols e D channel signaling protocols e DTE DCE protocols The D channel signaling protocols include layer 2 and layer 3 call control protocols Frames and messages exchanged through the D channel are all recorded for further analysis These data messages are essential to understanding interactive operations between an ISDN TA and the ISDN network They contain the compatibility information for the Model XM128 modem and your Central Exchange The B channel user data protocols include X 75 and V 120 protocols Only the layer 2 header addresses and control bytes and layer 3 header are captured Since the X 75 protocol can be used with various layer 3 protocols T 70 T 90 and ISO8208 protocols only the first 8 octets of the information field are recorded as the layer 3 header and are displayed in raw data form The analysis of the protocol data is carried out by NEGEAR Technical Support Troubleshooting 10 5 Reference Guide for the Model XM128 ISDN Digital Modem The DTE DCE protocols at the R reference point according to the ISDN nomenclature include the AT commands responses as well as the CAPI internal interface The CAPI internal interface is used with NETGEAR CAPI driver The NETGEAR CAPI driver communicates with the Model XM128 modem through this internal interface It is not recom
44. HONE 1 PHONE 2 7862MEA Key 1 ON OFF switch 2 Receptacle for power adapter 3 RS 232 COM port for connecting to a computer 4 ISDN port for connecting to an ISDN line 5 PHONE 1 and PHONE 2 ports for connecting analog devices telephone fax or modem Figure 1 4 Rear panel of the Model XM128 modem with U interface 1 6 Introduction Reference Guide for the Model XM128 ISDN Digital Modem Table 1 3 describes the components on the rear panel of the Model XM128 modem Table 1 3 Rear panel components Label Description ON OFF This switch turns power on or off POWER This is the power receptacle for the power adapter RS 232 This RS 232 COM port is for connecting the Model XM128 modem to the serial port of a computer or data terminal ISDN This port is for connecting the RJ 45 connector of an ISDN line PHONE 1 This port is for connecting the RJ 11 connector of an analog device telephone fax or analog modem PHONE 2 This port is for connecting the RJ 11 connector of an analog device telephone fax or analog modem Introduction 1 7 Chapter 2 Installation This chapter information about installing and using the Model XM128 ISDN Digital Modem Package Contents Your package should contain the following items Model XM128 ISDN Digital Modem Power adapter RJ 45 ISDN telephone cable Shielded RS 232 25 pin to 25 pin cable 25 pin to 9 pin adapte
45. If the idle time exceeds this guarding period the Model XM128 modem sends out a dummy PPP packet to the server to keep it from disconnecting the line Example If the server you are calling disconnects after 1 minute of inactivity issue the following command before connecting ATS124 59 lt Enter gt send dummy PPP packet after 59 seconds of inactivity Setting 8124 0 disables this function 5 2 Async to Sync PPP Reference Guide for the Model XM128 ISDN Digital Modem Answering Async to Sync PPP calls There is no need to configure the ISDN mode to the protocol of an incoming call If it is set to auto answer or an answering command is issued the Model XM128 modem determines the correct protocol to use by examining the data coming in from the remote site One exception is when the ISDN data call is carried through a Speech bearer In this case you would need to set up an MSN for the phone number of the calling party To do this use the command AT amp ZI3zxxx where xxx is the number from which the call originates For the Model XM128 modem to automatically answer incoming calls you need to set SO to a value greater than 0 i e ATSO 1 The Model XM128 modem answers the call and uses asynchronous to synchronous conversions to and from the DTE If SO is not set SO 0 the DCE reports RING and also makes an audible ring notification Multilink PPP Multilink PPP MPPP is a protocol that allows virtual bundling of the two
46. NET 3 CTR3 Europe NTT INS Net64 Japan Compatibility AT Command Set with ISDN extensions DTR Dialing Supplementary Services Calling Line Identification Security PAP CHAP Caller ID Callback Call blocking Technical Specifications A 1 Reference Guide for the Model XM128 ISDN Digital Modem Data Compression Power Adapter Physical Specifications Dimensions Weight Environmental Specifications Operating temperature Operating humidity Electromagnetic Emissions CE Mark FCC Part 15 Class B EN 55 022 CISPR 22 Class A VCCI Class 2 Hi fn LZS Stac Compression with CCP V 42bis 16 V 1A 22W max UL CSA North America CE TUV Europe TMark Japan 190 x 122x 31 mm 7 5 x 4 8x 1 2 in 0 7 kg 1 6 lb 0 C to 40 C 90 max relative humidity noncondensing A 2 Technical Specifications Appendix B Security Functions This appendix describes the security functions of the Model XM128 ISDN Digital Modem The modem provides two types of security functions that may be enabled to prevent unauthorized connections Security Types and Levels The Model XM128 modem provides the following types of security e Type 1 security is used when the remote modem is a NETGEAR modem e Type 2 security is used when the remote modem is a non NETGEAR device With a Type 1 connection the dial in remote modem sends in its supervisor password for matching with the prestored password list of
47. Reference Guide for the Model XM128 ISDN Digital Modem Commands for Incoming Calls When a call comes in the call is carried by one of the following protocols e V 120 e HDLC PPP MPPP or SLIP e V 110 e XJ5 Or the call may be initiated by an analog device This section provides some general guidelines for setting up the Model XM128 modem for call answer handling Be aware that the modem does not automatically answer a call unless S register SO is set to a value greater than 0 zero If S register SO 0 the modem only reports RING to your terminal program It can also respond with an audible tone that allows you to decide whether or not you should take any action When an ISDN data call comes in the Model XM128 modem tries to negotiate a connection using the proper ISDN protocol When an analog call comes in the modem sends the call to the analog port as the factory default PHONE 1 and then PHONE 2 Digital Data The Model XM128 modem currently supports Circuit Switched Data CSD for ISDN data applications The CSD protocols supported by the Model XM128 modem include PPP MPPP V 120 X 75 and V 110 PPP is the most popular protocol used in North America it is used by most of the Internet service providers After the Model XM128 modem answers a call it examines the incoming data to determine which protocol to use and automatically switches to that mode This process occurs transparently to the user The Model XM128 modem
48. TX4 56 38 X7 6 0 0 Displays result code in numeric VO format See also S register S35 7 64 40 Displays result code in verbose V1 format Status Registers and Result Codes D 7 Reference Guide for the Model XM128 ISDN Digital Modem Table D 4 Extended S registers ATSnzx continued Command Bit Decimal Hexadecimal Function ano Dersutt or description reference 24 Bitmapped register 0 1 0 3 0 3 Ring volume control in increments NO 3 of 1 in decimal value 2 0 0 Ignore S21 1 2 when PHONE 1 keypad is dialed 4 4 Do not ignore S21 2 when PHONE 1 keypad is dialed 3 0 0 Ignore S21 1 2 when PHONE 2 keypad is dialed 8 8 Do not ignore S21 2 when PHONE 2 keypad is dialed 5 4 Speaker volume control in L0 3 increments of 16 in decimal value S25 0 255 0 FF Specify the time delay that DTR 000 signal needs to be off before it is recognized in 10 ms units If 25 0 the delay time is set to 4 ms S27 Bitmapped register 3 5 0 0 Flow control is disabled amp HO 24 18 Hardware RTS CTS flow control amp H3 32 20 Software XON XOFF flow amp H4 control 40 28 Reserved amp H5 S29 0 0 Sets default dial PHONE number 000 D 39 39 pointer uses AT amp Zn s to store PHONE numbers 31 0 255 0 FF Holds the ASCII decimal value of 017 the XON S32 0 255 0 FF Holds the ASCII decimal value of 019 the XOFF D 8 Status Registers and Result Codes R
49. V lists both the 40 user passwords and the supervisor password on the screen for viewing Nonpassword Auto Callback Function In addition to the standard modem like security functions described in the previous section the Model XM128 modem provides another simpler callback function The calling party number origination address is checked against the five prestored callback numbers before the B channel is connected If the CPN is matched with any one of the numbers the incoming call is rejected without connection and without any charge and the Model XM128 modem automatically calls back using the matched phone number Table B 3 lists the auto callback commands Table B 3 Auto callback commands Command Description AT GCO This command disables the auto callback function default AT GC1 This command enables the auto callback function AT HCn xxxx n 0 1 4 This command sets the prestored numbers AT VG This command lists all the prestored numbers B 4 Security Functions Appendix C AT Command Set Reference This appendix provides information for using AT commands for the Model XM128 ISDN Digital Modem Operation Mode of the DTE Interface The operation mode for the DTE interface is Simplex mode This mode is used for conventional AT command operation Simplex Mode In simplex mode the Model XM128 modem is used just like an ordinary modem The DTE interface is either in the command
50. WS AOE ES o m 2 2 Ld iusMattreru diorsci urjt anasinin aai 2 3 Chapter 3 Setup for Windows 95 and Windows NT 4 0 Selecting the Appropriate Windows 95 Driver INF file ccecceeeeeeeeeeeeeeeteeeeeeeees 3 1 Contents V Reference Guide for the Model XM 128 ISDN Digital Modem Chapter 4 Configuration Contiguring Your ISDN Line and NetWork 2 iiiouesacicet raciste renes inoitia 4 1 Configuring Your Modem Using a Terminal Program esee 4 1 Understanding AT Commands 1er pk estia Mer pnri OE DA Ron Er peg ontV dE T PORT 4 2 Quick Tips Tor Issuing Al Commands auusieuiiseececacenacve secas eucsua nma vata aenea cain auia 4 3 Using AT Commands to Verify Modem Response sss 4 4 Communication Speed Setup eeeeeses AE OUR Pd A witch Type Setup for North JA IBEIGE aieo n rne ERR RET ERR ERERN IG NER M x ERR ES 4 5 SPID Setup Tor North AMECA ciis e niei e gua deca a ea items 4 6 epus M 4 7 Setup for Europe and the United Kingdom eese 4 7 Chapter 5 Async to Sync PPP internet and Remote Access PPP and SLIP i uicei oreste prt rn pi aed cud eaves 5 1 Making Async to Sync PPP and SLIP calls 5 tectae enm nn bnnc 5 1 Keeping a Line Connection During Idle Time eeeeeeeeeeesss 5 2 Answering Asyne to Syne PPP calls senner rb oa RU OK FARE Y AR ARIR 5 3 jniviwiuig deme EET Making a
51. Windows 95 or Windows NT9 Chapter 4 If you are using a terminal program Installing the Windows 95 and Chapter 3 No information given Windows NT Driver Installing FirstGear Chapter 3 No information given Assigning ISDN numbers Chapter 3 Chapter 4 and Chapter 5 For using AT commands when assigning ISDN numbers Preface xix Reference Guide for the Model XM128 ISDN Digital Modem Table 1 Manual contents continued Getting Started Using FirstGear Subject for the Model XM128 ISDN Digital Reference Guide for the Model Modem XM128 ISDN Digital Modem Networking Assigning multiple subscriber Chapter 3 Chapter 5 numbers For using AT commands when assigning multiple subscriber numbers Assigning protocols Chapter 3 Chapter 4 and Chapter 5 For using AT commands when assigning protocols Configuring Windows 95 Dial Up Chapter 3 See Getting Started Using FirstGear Table 2 lists the manuals that are available for various localized products Table 2 Manuals tanguag Product Model Inteifac Reference FirstGear guag Version Manual Manual English Model XM128S S T M XM128NA 0 M1 XM128S 0 International English Model XM128AU U M XM128NA 0 M1 XM128U 0 North America Japanese Model XM128D DSU M XM128JP 0 M1 XM128JP 0 Japanese German Model XM128GE S T M XM128NA 0 M1 XM128S 0 German Korean Model XM128KO U M
52. XM128 modem for Europe and the United Kingdom follow these steps 1 Type the command AT amp ZOI and the ISDN telephone number to assign the outgoing telephone numbers For example AT amp ZO 5551111 Press Enter Type the command AT amp ZOA and the outgoing telephone number for PHONE 1 For example AT amp ZOA 5552222 Type the command AT amp ZOB and the outgoing telephone number for PHONE 2 For example AT amp ZOB 5553333 Assign a protocol using the commands in Table 4 5 to configure the B channel protocol Configuration 4 7 Reference Guide for the Model XM128 ISDN Digital Modem Table 4 5 AT commands for setting protocols Protocol AT command X 75 ATB00 amp O2 V 110 user rate 38400 bps ATB18 amp O2 V 120 ATB20 amp O2 PPP ATB40 amp O2 For example if the protocol you want is PPP type the command ATB40 amp OD2 For other X 75 or V 110 protocol options refer to Appendix C AT Command Set Reference 6 Assign the appropriate MSN telephone numbers using the AT commands in Table 4 6 Table 4 6 AT commands for setting MSN Multiple subscriber number AT command X 75 telephone number AT amp ZlO telephone number V 110 telephone number AT amp ZI1 telephone number V 120 telephone number AT amp ZI2 telephone number PPP telephone number AT amp ZIS3 telephone number ISDN Data Protocol autodetection AT amp Zl4 telephone number PHON
53. a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna e Increase the separation between the equipment and receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV technician for help EN 55 022 Declaration of Conformance This is to certify that the NETGEAR Model XM128 Digital Modem is shielded against the generation of radio interference in accordance with the application of Council Directive 89 336 EEC Article 4a Conformity is declared by the application of EN 55 022 Class B CISPR 22 Bestatigung des Herstellers Importeurs Es wird hiermit best tigt daB das Model NETGEAR Model XM 128 ISDN Digital Modem gem der im BMPT AmtsblVfg 243 199 und Vfg 46 1992 aufgef hrten Bestimmungen entst rt ist Das vorschriftsmaBige Betreiben einiger Ger te z B Testsender kann jedoch gewissen Besc
54. ainly to exchange signal messages with the switch and to set up and release calls In most cases if there is any incompatibility issue raised it is the D channel signaling protocol that is causing the problem The Model XM128 modem does not allow the user to use the D channel for sending and receiving user data Out of Band Signaling Some switches transmit all the network signals through the D channel freeing both B channels to be used exclusively for your communication This arrangement allows a throughput of 128 Kbps 64 Kbps per channel However not all switches support out of band signaling at this time For the switches that do not support out of band signaling network signals are transmitted through B channels only which reduces the bandwidth to 56 Kbps The Model XM128 modem currently supports the following switch types and D channel protocols e DSSI e TR6 e AT amp T 5ESS Custom and National ISDN 1 protocol e Northern Telecom DMS 100 Custom and National ISDN 1 protocol e Siemens EWSD National ISDN 1 protocol e Rate Adaption amp B channel protocol The Model XM128 modem currently supports the following protocols e V 120 e X 75 e V 110 Asyn to sync PPP and PPP MP G 2 ISDN Reference Reference Guide for the Model XM128 ISDN Digital Modem The B channels are used for carrying user communication information which can be data voice or fax Voice and analog data must be sent on the B channels Unlike the asy
55. al values in the S register and are used for demonstration purposes only If you want to set S38 bit 3 to 1 for a specific application use either the simple command ATS38 3 1 or use the difficult method outlined in the following steps 1 Read the value from S38 using the ATS38 command D 2 Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem 2 Use Table D 1 to convert the decimal bit value to binary Table D 1 Binary conversion table Bit Binary Decimal Hexadecimal value value value 0 00000001 1 01 1 00000010 2 02 2 00000100 4 04 3 00001000 8 08 4 00010000 16 10 5 00100000 32 20 6 01000000 64 40 7 10000000 128 80 3 Use Table D 2 to perform a logic OR operation with the value to set bit 3 to 1 binary Table D 2 Setting bit 3 Operation E 1 Decimal Hexadecimal EA 2 Decimal Hexadecimal OR 10001000 136 88 01000000 64 40 00001000 8 08 00001000 8 08 10001000 136 88 01001000 72 48 NOT 00001000 8 08 00001000 8 08 11110111 247 F7 11110111 247 F7 AND 10001000 136 88 01000000 64 40 10000000 128 80 01000000 64 40 4 Use Table D 2 to invert the value using a logic NOT operation and then perform a logic AND operation to set bit 3 to 0 binary 5 Using the resulting decimal value type the ATS38 n command to set the register Status Registers and R
56. alues AT amp Jn can be used for bundle configuration as follows e AT amp JO disables B channel bundling e AT amp J1 enables B channel bundling in answer mode only e AT amp J2 enables B channel bundling in call mode only e AT amp J3 enables B channel bundling in both call and answer modes The bundle protocol can be selected as follows e ATS100 0 MLP channel bundling e ATS100 1 CCB channel bundling If channel bundling is enabled the ATDIs command generates two consecutive setup messages to invoke bundle initiation For Northern Telecom ISDN each BRI destination phone number can be called only once at any time In order to use two B channels for aggregation you must place two calls with different phone numbers For this purpose enter the following command ATDIphone_number_1 phone_number_2 If the called site receives two consecutive setup messages with the same calling party number and bearer capability or origination address for and service indicator for 1TR6 then it is deemed as a bundle request The two data calls are established following normal call control procedures That is the network treats them as two independent calls ISDN Overview 6 17 Reference Guide for the Model XM128 ISDN Digital Modem The devices in the two sites then use X 75 Multiple Link Protocol or cFos channel bundling protocol to coordinate the two B channels The former would need an overhead of 2 octets for each packet The follo
57. and configuring your NETGEAR system or with post installation questions or problems contact your point of purchase representative To contact customer support or to purchase additional copies of this document and publications for other NETGEAR products you can contact NETGEAR at the following numbers Phone U S Canada 1 800 211 2069 Japan 0120 66 5402 Europe 44 171 571 5120 Australia 1 800 142 046 Fax U S Canada 510 498 2609 World Wide Web NETGEAR maintains a World Wide Web Home Page that you can access at the universal resource locator URL http NETGEAR baynetworks com A direct connection to the Internet and a Web browser such as Internet Explorer or Netscape are required Bulletin Board Service NETGEAR maintains a bulletin board that you can access to obtain information about the latest version of the software In the United States phone 407 531 4574 Reference Guide for the Model XM128 ISDN Digital Modem Contents Preface Pe ER E TE NS NE xvii ARS LN EO ES T xviii Special Message Formals siad bee E iE Rau RR EP ntU a Mun da p RR xviii Use or Emer Popes and PISIS audis rebut Un ir eran sk PS A vEN VES ES E DE pons DE xviii irc CN il qe E xix icu sdimh e RU DU xix Chapter 1 Introduction ARGUMENTE TET T E T CTS 1 1 MSR COIS RU adni ina AA EE EAEE diab 1 3 olal A aa e i e S 1 3 Rear zr T T a rrr I I Te 1 6 Chapter 2 Installation Package CO MONS Looeoasuabrenas gor nido A Data tara 2 1 WSUS
58. atures 1 1 flash EPROM upgrading 9 1 frequently used AT commands 8 2 front panel 1 3 H HDLC 5 1 5 3 incoming calls 6 3 7 10 installation instructions 2 2 verifying 2 3 interfaces 1 3 ISDN advanced call control 7 1 answering a call 7 7 basic rate interface points G 3 control of ENDGERATEAUS WAHLZIFFER EAZ 7 6 LEDs 1 4 line configuring 4 1 numbers assigning 6 6 ordering G 4 overview G 1 placing acall 7 11 port 1 7 L LED descriptions 1 4 2 3 loopback tests 10 2 modem reset 10 4 modes answer 5 3 MPPP 5 3 5 4 MSN 5 3 answering a call using 6 6 AT commands 4 8 multi auto answering 6 9 7 9 Multilink PPP 5 3 5 4 5 5 N network switches setting up 4 5 network configuring 4 1 Index Reference Guide for the Model XM126 ISDN Digital Modem O out of band signaling G 2 outgoing calls 6 1 P package contents 2 1 packet length determining 6 5 passwords setting and modifying B 3 Phone 1 port 1 7 Phone 2 port 1 7 point to point configuration 7 11 port ISDN 1 7 Phone 1 1 7 Phone 2 1 7 serial 1 7 Power LED 1 4 power receptacle 1 7 PPP 5 1 5 2 5 3 5 4 5 5 protocol specifcations 6 9 PWR LED 1 4 R rear panel 1 6 related publications xix Remote Access 5 1 reset modem 10 4 result codes D 21 RJ 11 connector pin assignments E 3 RJ 45 connector pin assignments E 1 RS 232 interface F 1 RS 232 port 1 6 S security level 1 B 2 level2 B 2 level 3 B 3 types
59. be used for the same purpose as the MSN Because the Model XM128 modem is highly integrated and multifunctional it can be thought of as a black box that contains multiple distinct terminals Each of these internal terminals can be assigned one ISDN number using the AT amp ZIn xxxx command The number assigned by AT amp ZIn xxxx can be interpreted as either the MSN or the subaddress determined by the bit 5 of S119 as follows e 119 520 for number treated as the MSN default e 119 5 1 for number treated as the subaddress The factory defaults for these numbers are unassigned If an incoming setup message is offered with addressing information in other words the appropriate part of the called party number or the called party subaddress this address is compared with the MSN subaddress numbers assigned by the AT amp ZIn xxxx commands The call is accepted using the specific protocol if the assigned number of this protocol matches the received called party number or called party subaddress Note Two phone number strings are said to be matched if their least significant n digits are identical where n is the number of digits of the shorter string Usually one digit is enough to distinguish the various protocols Answering a Call for 1TR6 If an incoming setup message is offered with addressing information for example the destination address W element This address is compared with the EAZ numbers assigned by the AT amp ZI
60. both B channels to be used exclusively for your communication purposes This arrangement allows for throughput of 64 Kbps per channel However not all switches support out of band signaling at this time For switches that do not support out of band signaling network signals are transmitted through the B channels which reduces the bandwidth to 56 Kbps When making a V 120 call be sure that the communication supports out of band signaling If it does not support out of band signaling you need to set your Model XM128 modem to 56K mode using the AT amp EI command AT amp EO to set it back to 64K mode If your modem is on the receiving end you can keep the setting at AT amp EO 64K data mode The modem automatically switches between the two speeds in answer mode Configuring the V 120 Mode To configure for a 56K V 120 call use the following commands 1 Enter ATB20 Select V 120 for communication Model XM128 modem should respond with OK 2 Enter AT amp EI Select 56K data mode Model XM128 modem should respond with OK 6 12 ISDN Overview Reference Guide for the Model XM128 ISDN Digital Modem Now you are ready to dial the phone number If you need to save the setting into NVRAM use the following commands and follow these steps 1 Enter AT amp WO save the settings to profile 0 Profiles available 0 3 Model XM128 modem should respond with OK 2 Enter ATZO save stored settings as the power on settings to profile
61. c X 121 e N4 for telex numbering plan Rec F 69 e N8 for national standard numbering plan e N9 for private numbering plan Zn specifies the subaddress type e ZO for NSAP Rec X 213 with AFI 0x50 IA5 characters default if Zn is omitted e Z2 for user specified IA5 characters The command AT amp ZOx removes the number subaddress assignment The number and subaddress assigned by AT amp ZOxss if any can be used for calling party number and calling party subaddress information elements respectively while dialing The default settings of the phone number and subaddress of all the types of calls are UNASSIGNED meaning the setup message sent by the Model XM128 modem contains neither calling party number nor calling party subaddress information elements The command AT amp ZO can be used to browse the current settings of the known numbers and subaddresses 7 4 Advanced ISDN Reference Guide for the Model XM128 ISDN Digital Modem Call Control for 1TR6 Old German ISDN In order to initiate a 1TR6 ISDN call two information elements are necessary e Service indicator which determines what kind of bearer services are desired e Destination address which provides necessary information for the telephone company central office to direct the call to the remote party Control of Outgoing Service Indicator The outgoing service indicator is assigned when you configure the B channel protocols using the command ATB
62. cess memory NVRAM of the modem Turning power on and off will not erase the information The only time that you need to reconfigure your line is when you perform a hardware reset on your modem when you change options on your ISDN line NETGEAR provides a simple Windows 95 or NT 4 0 utility to help you set up the Model XM128 modem Refer to Getting Started Using FirstGear for the XM128 ISDN Digital Modem for complete instructions This chapter explains how to set up your switch using the Windows Windows 95 utility that comes with the modem If your Model XM128 modem is not going to be set up by a computer running Windows use a terminal program that allows you to send AT commands to the modem and receive responses from it Configuring Your Modem Using a Terminal Program If you are not running Windows 95 or Windows NT configure your Model XM128 modem with a terminal program that allows you to send and receive AT commands and responses from the modem NETGEAR recommends that you have your Model XM128 modem ready to use before the telephone company installs your ISDN line If the modem is ready you can enter the SPID and confirm that the ISDN network is responding properly before the telephone installer leaves Configuration 4 1 Reference Guide for the Model XM128 ISDN Digital Modem The setup procedure for the Model XM128 modem needs to be done only once because the settings are stored in the nonvolatile RAM of the modem and turni
63. command AT amp ZIn m where n 0 7 and mz 0 9 Command Function The following commands are used for assigning EAZs e amp Zl0zmassigns EAZ for X 75 e amp ZlI2massigns EAZ for V 110 e amp Zl2 massigns EAZ for V 120 e amp Zl 32massigns EAZ for PPP MPPP e amp Zl4 2massigns EAZ for ISDN data protocol auto detection e amp Zl5zmassigns EAZ for PPP MPPP e amp Zl6 massigns EAZ for PHONE 2 e amp Zl7 2massigns EAZ for PHONE 1 The default EAZ of each protocol is as follows e amp ZI0 1 for data e amp Zl4 2 for data e amp Zl6 3 for the analog adapter PHONE 2 e amp ZI7 4 for the analog adapter PHONE 1 e T amp ZI for displaying the EAZ numbers assigned by the AT amp ZIn m commands 7 6 Advanced ISDN Reference Guide for the Model XM128 ISDN Digital Modem The EAZ last digit of the destination address in an incoming setup message is checked with the protocol of each EAZ If there is a match and the service indicated is compatible with this protocol the call be accepted using the protocol Note The EAZs must be assigned precisely in order to accept calls accordingly The suffix digit to an ISDN phone number in a dial out command is used as the destination EAZ in the Destination Address W element in the setup message sent to the destination If this suffix digit is omitted the switch assumes the EAZ as 0 Each type of outgoing call of the XM128 can be assigned with one origination EAZ by using the co
64. ctions The command ATDSn Sm n and nz0 1 39 dials the n 1 th phone number for the first connection and the m 1 th phone number for the second connection Example ATDISO S1 Enter dials the number stored in location 0 and the number stored in location 1 for the MPPP connection Endpoint Discriminator The Endpoint Discriminator option represents identification of the system transmitting the packet This option advises a system that the peer on this link could be the same as the peer on another existing link Some Multilink PPP implementations require the use of the Endpoint Discriminator option The Endpoint Discriminator consists of two components Class and Address The Class field is one octet as stored in S register S85 and indicates the identifier address space Table 5 1 lists the valid values of the S85 register Table 5 1 S85 register values Value Description 0 Null Class by default 1 Internet Protocol IP Address 2 IEEE 802 3 Globally Assigned MAC Address 3 Locally Assigned Address 4 PPP Magic Number Block 5 Public Switched Network Directory Number The Endpoint Discriminator Address field is of variable length from 0 to 20 octets and can be assigned by the ATEPD command ATEPD Octet 1 O0ctet 2 0ctet 3 O0ctet n 5 4 Async to Sync PPP Reference Guide for the Model XM128 ISDN Digital Modem Each Octet_i is in the range from 0 to 255 The angle brackets lt and gt are part
65. data CTS On The Model XM128 modem is ready to accept data from the connected data terminal or computer TD Blinking The data terminal or computer connected to the Model XM128 modem is transmitting data to the modem RD On The data terminal or computer connected to the Model XM128 modem is receiving data from the DTE port of the modem PHONE 1 On The handset of the telephone connected to the port is not properly placed in the receiver cradle PHONE 2 On The handset of the telephone connected to the port is not properly placed in the receiver cradle Introduction 1 5 Reference Guide for the Model XM128 ISDN Digital Modem Rear Panel As illustrated in Figure 1 3 and Figure 1 4 the rear panel contains a power switch a power receptacle and ports to connect a computer ISDN line and two analog devices phone fax or modem 09 POWER ma ISDN S PHONE 1 PHONE 2 Ooo 7861MEA key 1 ON OFF switch 2 Receptacle for power adapter 3 RS 232 COM port for connecting to a computer 4 ISDN port for connecting to an ISDN line NT 1 5 PHONE 1 and PHONE 2 ports for connecting analog devices telephone fax or modem Figure 1 3 Rear panel of the Model XM128 modem with S interface 0 Ooo POWER p ISDN U P
66. del XM128 ISDN Digital Modem Point to Point Configuration In some areas the Direct Dial In DDI number is less expensive than the MSN therefore you might want to subscribe to point to point ISDN to employ the DDI function In this case only one modem can be connected to the ISDN line and the TEI Terminal Equipment Identifier is always zero The TEI is established by setting the bit 1 of S register S119 as follows e 119 1 0 to disable point to point DDI function default e 119 1 1 to enable point to point DDI function Placing a Call To initiate a call configure the Model XM128 modem according to the bearer service or protocol that you want to use ATBnn is used for ISDN data calls Placing a Call for DSS1 The ATDx command ATDx Yn Nn called_party_number Zn called party subaddress is used for dialing Where x I for ISDN data calls A for the analog adapter 1 or B for the analog adapter 2 Yn specifies the type of number e YO for unknown default if Yn is omitted e Y for international number e Y2 for national number e Y3for network specific number e Y4 for subscriber number Advanced ISDN 7 11 Reference Guide for the Model XM128 ISDN Digital Modem Nn is the identifier of the numbering plan for the ATDx command e NO for unknown default if Nn is omitted NI for ISDN numbering plan Rec E 164 e N3 for data numbering plan Rec X 121 e N4 for telex numbering plan Rec
67. dem operates at a speed of up to 460 kilobits per second Kbps data rate or 115 Kbps data rate without compression and can download video clips music or high resolution color graphics from the World Wide Web or other online services many times faster than an analog modem The Model XM128 modem supports concurrent data and voice communications reducing cost and administration of multiple phone lines Purpose This guide provides instructions for the installation and use of the Model XM128 modem This guide also provides instructions for the installation and use of FirstGear a configuration software application for installing configuring and monitoring the Model XM128 modem Preface xvii Reference Guide for the Model XM128 ISDN Digital Modem Conventions This section describes the conventions used in this guide Special Message Formats This guide uses the following formats to highlight special messages Note This format is used to highlight information of importance or special interest Caution This format is used to highlight information that will help you prevent equipment failure or loss of data AN Warning This format is used to highlight material involving possibility of injury or equipment damage Use of Enter Type and Press This guide uses enter type and press to describe the following actions e When you read enter type the text and press the Ente
68. e D 4 on page D 5 in Appendix D Status Registers and Result Codes amp DO Ignore DTR signal assume DTR is always on amp D1 108 1 DTR OFF ON transition causes dialing of the default number See also the command AT Dn and 848 4 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes amp D2 108 2 Data Terminal Ready DTR OFF causes the Model XM128 modem to hang up amp D3 Same as amp D2 but DTR OFF causes the Model XM128 modem to hang up and reset from profile 0 amp En B channel line speed for ISDN data call See also S register 118 2 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes amp EO 64 Kbps amp E1 56 Kbps Default for American ISDN amp F Load factory settings to RAM as active configuration amp Hn Data flow control DTE DCE See also S registers 27 3 to 27 5 Fora description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes amp HO Flow control is disabled amp H3 Hardware CTS RTS flow control is disabled amp H4 Software XON XOFF flow control is disabled amp Jn Bundle selection See also S registers 87 5 87 6 and 100 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes amp JO Bundle connection is disabled amp J1 Bundle con
69. e D 7 lists the result code field descriptions Table D 7 Result code field descriptions Field name Possible values Error_Code NONE ARQ Error_Control LAPB LAPD V42 This field will not show if no error control is negotiated Data_Compression V42b DCE_Speed All possible DCE speeds supported DTE_Speed All possible DTE speeds supported Protocol Only ISDN protocols are listed here X 75 X 75M X 75 with MLP Bundle X 75C X 75 with cFos Bundle V110 V120 V120M V 120 with MLP Bundle V120C V 120 with cFos Bundle SLIP PPP BTX D 22 Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Connect Strings for Error Corrected Connections To enable the following numerical ATVO and verbose ATV 1 result codes when an error corrected connection is made set 35 bit 7 to 1 Example ATS35 7 1 lt enter gt Table D 8 lists the connect strings Table D 8 Connect strings ATVO ATV1 ATVO ATV1 50 CONNECT 61 CONNECT 24000 51 CONNECT 1200 62 CONNECT 26400 52 CONNECT 2400 63 CONNECT 28800 53 CONNECT 4800 64 CONNECT 31200 54 CONNECT 7200 65 CONNECT 33600 55 CONNECT 9600 66 CONNECT 38400 56 CONNECT 12000 67 CONNECT 48000 57 CONNECT 14400 68 CONNECT 56000 58 CONNECT 16800 69 CONNECT 64000 59 CONNECT 19200 70 CONNECT 112000 60 CONNECT 21600 71 CONNECT 128000 Status Registers and Result Codes D 23 Appendi
70. e your Model XM128 modem with the V 110 Protocol Answering a V 110 Call After you set the proper V 110 communication mode there is no need to configure the ISDN mode to the protocol of an incoming call If the device is set to auto answer the Model XM128 modem determines the correct protocol to use by examining the data coming in from the remote site Otherwise this determination takes place after an answering command is issued One exception to this process is when the ISDN data call is carried through speech bearer In this case you need to make an MSN entry for the phone number from which you are expecting the data over speech bearer call to be coming for X 75 protocol Use AT amp ZI1 n Refer to Data over Speech Channel on page 6 7 for details To allow the Model XM128 modem to answer the incoming call you need to set SO to a value greater than 0 in other words ATSO 1 The Model XM128 modem answers the call and uses asynchronous to synchronous conversions to and from the DTE If SO is not set SO 0 the DCE reports RING and also makes an audible ring notification Making a V 110 Call Before an ATDIxxx command is issued to dial out make sure that your Model XM128 modem is in the asynchronous mode AT amp MO Use the commands in Table 6 6 to configure V 110 ISDN communication Table 6 6 V 110 configuration commands AT Command Description ATB10 User rate follows DTE speed ATB13 User rate 2
71. ed S registers ATSn x continued z Function and Default or Command Bit Decimal Hexadecimal description ref ren e 118 Bit Decimal Hexadecimal see er AT amp ZIn s 0 0 0 Enables dial in call 1 1 Disables dial in call dial out only 2 0 0 Default B channel line speed is amp EO 64 Kbps for ISDN data call 4 4 Default B channel line speed is amp E1 56 Kbps for ISDN data call 4 0 0 Uses 3 1KHz bearer service whenever possible for analog adapter PHONE 2 16 10 Uses speech bearer service whenever possible for analog adapter PHONE 2 5 0 0 Uses 3 1KHz bearer service whenever possible for analog adapter PHONE 1 32 20 Uses speech bearer service whenever possible for analog adapter PHONE 1 6 0 0 Enables analog adapter to accept global calls 64 40 Forbids analog adapter to accept global calls with MSN unmatched 7 0 0 Enables analog incoming calls 128 80 Rejects analog incoming calls 119 0 0 0 Disables callback function GC 1 1 Enables callback function 1 0 0 Disables point to point signaling DDI function 2 2 Enables point to point signaling DDI function Status Registers and Result Codes D 17 Reference Guide for the Model XM128 ISDN Digital Modem Table D 4 Extended S registers ATSn x continued Command Bit Decimal Hexadecimal Function and description Default or reference 119 continued 2 0 Disables point to multipoint signaling DDI function Enables poi
72. eference Guide for the Model XM128 ISDN Digital Modem Table D 4 Extended S registers ATSn x continued Command Bit Decimal Hexadecimal Function and description Default or reference S35 Bitmapped register 16 10 When Data Voice is pressed the Model XM128 modem dials the default number 128 80 Enable extended numerical result codes from 50 71 when an error corrected connection is made Use with ATVO see result code table 38 Bitmapped register 000 Repeatedly dialing default number Dn S29 DCD on off sequence follows UNIX standard DCD high before connect message is sent DCD off after last DCE response is sent amp C1 21 4 S40 Bitmapped register 4000 No result code displayed in answer mode Q2 S41 Bitmapped register 4000 Enables CCITT signals 140 and 141 on EIA 232D interface 42 Bit Bitmapped register 000 Disables escape sequence code in answer mode 32 20 Disables Data Voice button 64 40 Disables lt RINGING gt result code Xn S44 Bitmapped register 000 ATDSn initiates auto dial of the stored numbers consecutively until connection is made DSn 16 10 DSR follows DTR See also S register 841 5 amp S1 S56 0 255 0 FF Hook flash detect time for analog adapter POTS port units 10ms 050
73. er PHONE 1 AT amp ZI7 s Assign the called phone number for analog adapter PHONE 2 ATS56 n Flash timer in 100 ms unit to set maximum duration of on off hook transition to be recognized as flash Table 8 2 lists the AT commands that are specific to European switches Table 8 2 Frequently used AT commands European switches AT Command Description of command ATS89 6 0 To disable the metering pulse for analog adapter PHONE 1 ATS89 6 1 To enable the metering pulse for analog adapter PHONE 1 ATS89 5 0 To disable the metering pulse for analog adapter PHONE 2 ATS89 5 1 To enable the metering pulse for analog adapter PHONE 2 8 2 Analog Call Handling Reference Guide for the Model XM128 ISDN Digital Modem Making and Receiving Analog Calls This section explains the role of analog adapters in placing outgoing analog calls and receiving incoming analog calls Placing a Call from the Analog Adapter Making a call from the analog adapter is as easy as picking up the telephone connected to the analog port and dialing With a terminal program you can also use the Model XM128 modem to dial the number for you To place a call from the analog adapter follow these steps 1 2 3 Type ATDB714 693 0808 dial the number You should see this message CONNECT Dialing is complete Pick up the phone handset and wait for the remote device to answer Use ATDAs ATDBs to place a call fo
74. erence troubleshooting tables for the Model XM128 ISDN Digital Modem For troubleshooting purposes the Model XM128 modem performs its own diagnostic tests which can provide information about each of its functions The Model XM128 modem provides several diagnostic capabilities e Power on self test e Local digital loopback tests Diagnostic command e Modem reset Power on Self test At each power up sequence or upon a reset command from the panel the Model XM128 modem tests the ROM code checksum system RAM memory EEPROM digital and analog circuit calibrations and analog circuit calibrations Table 10 1 summarizes the power on self test of the Model XM128 modem Table 10 1 Power on self test Test Sequence LED LNK LED B1 LED B2 LED AA Test Description 1 On Off Off Off Memory test 2 Off On Off Off ISDN chip interface test 3 Off Off On Off ISDN chip functional test 4 Off Off Off On HDLC functional test Troubleshooting 10 1 Reference Guide for the Model XM128 ISDN Digital Modem Note The LED lights up during the test and blinks if the test fails The LNK LED light s up for a half second to indicate the success of the power on self test Then the LNK LED becomes the normal physical layer layer 1 active indicator Loopback Tests The Model XM128 modem performs several loopback tests as part of its diagnostic capabilities ISDN Loopback test AT amp T9 The AT a
75. essed entity The outgoing high layer compatibility can be controlled by setting the value of S register S 108 n as follows e n 0 S108 setting for analog adapter 2 e n 2 S110 setting for ISDN data calls e n 3 S111 setting for analog adapter 1 Table 7 1 lists the S register values and their functions Table 7 1 S register values and functions S 108 nz Function 0 No high layer compatibility info element sent default 1 Telephony 4 Facsimile Group 2 3 40 Telex service Rec F 220 49 Telex service Rec F 200 50 International internetworking for video services Rec F 300 and T 110 53 Telex service Rec F 60 56 Message Handling Systems MHS Rec X 400 series 65 OSI application Rec X 200 series Example ATS111 4 sets fax compatibility message for analog port 1 7 2 Advanced ISDN Reference Guide for the Model XM128 ISDN Digital Modem Bearer capability and low layer compatibility information elements are determined when you configure the B channel protocols using the ATBnn command The outgoing low layer compatibility information element can be turned on or off by setting the S80 bit n as follows e n 4 for analog adapter 2 e n 6 for ISDN data calls e n 7 for the analog adapter 1 Table 7 2 lists the commands for enabling and disabling outgoing low layer compatibility Table 7 2 Outgoing low layer compatibility commands 108 n Functio
76. esult Codes D 3 Reference Guide for the Model XM128 ISDN Digital Modem S Register Descriptions In most bitmapped S registers the default bit value is 0 which is the normal situation and only the nondefault situation is described Some reserved bits are for factory use and the user should not change them Table D 3 describes each basic S register Values followed by an asterisk are the factory default settings Table D 3 Basic S registers ATSn x Command Function and description Default S0 Sets the number of rings on which the Model 000 XM128 modem answers 0 value disables auto answer S1 Counts and stores number of rings from an 000 incoming call S2 Defines escape code character default 043 43 dec S3 Defines ASCII carriage return 013 S4 Defines ASCII line feed 010 S5 Defines ASCII backspace 008 S7 Sets duration in number of seconds that the 060 Model XM128 modem waits for a carrier S8 Sets duration in seconds for the pause and 002 repeat commands For more information refer to Table C 1 on page C 2 D 4 Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Table D 4 describes each extended S register Defaults are indicated by a plus sign in the Default or reference column of the table Table D 4 Extended S reg
77. et the DTE speed based on the bandwidth that the switches support Async to Sync PPP 5 1 Reference Guide for the Model XM128 ISDN Digital Modem Most of the time you only use this protocol for making calls to remote sites with ISDN LAN Routers If the remote access site you are calling uses a Terminal Adapter such as the Model XM128 modem you can use V 120 as it provides data compression Before making the call check which protocol is set for the ISDN mode using the amp V command to view the settings When you are ready to view the settings type AT amp V lt Enter gt The Model XM128 modem modem responds Current Settings Switch Type Northern Telecom DMS ISDN Outgoing Service PPP Async to Sync Conv 64K If the settings displayed match your current setup you are ready to place the call When you are ready to place the call type ATDI remote access number Enter The Model XM128 modem responds Connect 115000 64000 PPP None Keeping a Line Connection During Idle Time If you are using PPP to access a server the server probably has a watchdog timer to monitor the line activity If the idle time exceeds some time interval usually 1 minute the server releases the connection for other clients to dial in Users may suffer some inconvenience because you have to dial to the server again and repeat the login procedure when disconnected The value in register 124 in seconds is used as the idle time gauge
78. g AT commands are used to switch the V 42bis data compression on or off for ISDN data calls when using V 120 protocol e AT amp KAA enable V 42bis on ISDN call e AT amp KOO disable V 42bis on ISDN call With the amp K44 setting the Model XM128 modem tries to connect using V 42bis data compression If the remote device does not support V 42 then LAPD error correction can be used When a connection is made using V 42bis compression the following connect message is displayed CONNECT 115200 V120 56000 LAPD V42b It takes extra time for the calling ISDN device to negotiate V 42bis If you know in advance that the called site has no V 42bis capability it would be better to issue the AT amp KO00 command beforehand in order to get a quick connection V 42bis is an international data compression standard commonly used in modem communications This standard provides real time data compression The NETGEAR expertise in data compression has been brought into its ISDN applications which are much higher in speed than modem communications ISDN Overview 6 15 Reference Guide for the Model XM128 ISDN Digital Modem Because the V 42bis algorithm needs an error free transmission channel between the compression and decompression processes it can only work with a protocol that has error control competence The X 75 and V 120 protocols can be used together with V 42bis data compression The V 110 protocol on the other hand is just an R
79. gns the MSN phone number for Phone 1 The command AT amp ZI can be used to display the MSN numbers The factory default for these numbers is UNASSIGNED 6 6 ISDN Overview Reference Guide for the Model XM128 ISDN Digital Modem If an incoming setup message is offered with addressing information that is the appropriate part of the Called Party Number this address is compared with the MSN numbers assigned by the AT amp ZIn s commands The call is accepted using the specific protocol if the assigned number of this protocol matches the received Called Party Number Note You are not required to enter the complete numbering string for the AT amp Z command The last few distinguishable digits are enough for the XM128 to make the decision Two phone number strings are said to be matched if their least significant n digits are identical where n is the number of digits in the shorter string The called party subaddress information within the incoming setup message can also be used to select the protocols and or analog ports In normal conditions called party subaddress information is not used by the Model XM128 modem to select the protocols or services but only indicates the subaddress if any to the DTE Refer to Chapter 11 for more detailed information Data over Speech Channel If you are expecting ISDN data calls through Speech Voice channel you would need to set up MSN for it If no MSN entries are found i
80. go to step 2 2 Type ATSPID1 n and Enter You should receive the following response OK SPID Correct An error condition is present and it indicates that an incorrect SPID number was entered if you receive the following response OK SPID Error A general failure is indicated if the ISDN line is not connected to your Model XM128 modem or if you select the wrong switch The SPID number was not verified if you receive the following response OK The D LED lights when the SPID s are entered and verified If you are not able to get the SPID s to accept correctly recheck all cable connections before verifying the number s with your telephone company and reentering them again If the D LED still does not light the telephone company should make sure the line you ordered has been correctly set up 4 6 Configuration Reference Guide for the Model XM128 ISDN Digital Modem Entering DNs You will need to enter the phone numbers given to your ISDN line The phone numbers will be cleared whenever the switch type is changed 1 Type ATDNO n and Enter Where n is the 7 digit phone number You should receive the following response OK Type ATDN1 n Enter Where n is the second 7 digit phone number You should receive the following response OK Type AT amp W0ZO0 and Enter to save the settings You should receive the following response OK Setup for Europe and the United Kingdom To configure your Model
81. han 0 for example ATSO 1 The Model XM128 modem answers the call and uses asynchronous to synchronous conversions to and from the DTE If SO is not set S020 the DCE reports RING and also makes an audible ring notification Making an X 75 Call The default data protocol of the Model XM128 modem is ATB20 V 120 the X 75 protocols can be chosen using the following AT commands ATBOO for X 75 with transparent layer 3 ATBO1 for X 75 with T 70 NL 6 16 ISDN Overview Reference Guide for the Model XM128 ISDN Digital Modem The ATBOx commands not only specify the outgoing protocol but also set the default layer 3 for an incoming X 75 call without layer 3 information It is important for both ends of an X 75 connection to execute the same preassigned layer 3 protocol because it reduces the chance of the Model XM128 modem making the wrong protocol selection For European ISDN DSS1 the low layer compatibility LLC information element in the setup message can be used to specify the layer 3 protocol Because this is an option for ISDN switches some of the switches might not deliver the LLC information element to the remote end There is no provision for 1TR6 switches to specify the layer 3 protocol for X 75 type of calls Making a Bundled Call with X 75 A bundle connection is initiated at the calling site by sending two consecutive setup messages to the network The two setup messages are all the same except for the Call Reference v
82. here n represents the index to the entry and xxx represents the assigned callback phone number Any character ASCII 0 127 can be used in the password table The maximum password length is eight characters for each entry The security functions are accessible only through AT commands in terminal mode A supervisory password is required for adding or modifying the entries The default supervisor password is NETGEAR when the Model XM128 modem is shipped from the factory This supervisory password is sent to the remote user if Type 1 security is set at the remote end To modify the supervisor password use the command AT HS Security Functions B 3 Reference Guide for the Model XM128 ISDN Digital Modem You are asked to enter the original password to enter a new password and then to reenter the new password for verification For example you are prompted with the following Password Enter the current supervisory password at this prompt You are then prompted for a new password Password Enter the new supervisory password at this prompt You are then prompted to verify the new password Verify Enter the new supervisory password again at this prompt You should receive the following response OK The supervisory password is now modified Use the command AT Hn to modify the nth user password You are prompted to enter the supervisory password first then the user s password for this entry is requested and verified The command AT
83. hr nkungen unterliegen Lesen Sie dazu bitte die Anmerkungen in der Betriebsanleitung Das Bundesamt f r Zulassungen in der Telekommunikation wurde davon unterrichtet daB dieses Ger t auf den Markt gebracht wurde und es ist berechtigt die Serie auf die Erf llung der Vorschriften hin zu berpr fen Certificate of the Manufacturer Importer It is hereby certified that the NETGEAR Model XM128 Digital Modem has been suppressed in accordance with the conditions set out in the BMPT AmtsbIVfg 243 1991 and Vfg 46 1992 The operation of some equipment for example test transmitters in accordance with the regulations may however be subject to certain restrictions Please refer to the notes in the operating instructions Federal Office for Telecommunications Approvals has been notified of the placing of this equipment on the market and has been granted the right to test the series for compliance with the regulations VCCI 2 Statement This equipment is in the second Class category information equipment to be used in a residential area or an adjacent area thereto and conforms to the standards set by the Voluntary Control Council for Interference by Data Processing Equipment and Electronic Office Machines aimed at preventing radio interference in such residential areas When used near a radio or TV receiver it may become the cause of radio interference Read instructions for correct handling Customer Support For assistance with installing
84. i Reference Guide for the Model XM 128 ISDN Digital Modem Chapter 7 Advanced ISDN Gall Control TOF DOST ND 7 1 Control of Outgoing Service INdicator 22 5 acl a Rh denen das vade verre ipt 7 2 Control of ISDN Phone Numbers and Subaddresses er ere asses d OR Call Control Tor 1T THO Old German ISDN uiaooccsocasuse arose soar rte 7 5 Control of Outgoing Service IPICKGEIQOI siniccsicciniencccacmniecddicnmenssaciudenssudinuesdddivnndessnadins 7 5 Control of EAZ ENDGERATEAUSWAHLZIFFER cccccscssccsesesceeeeeeesesceeseaneeees 7 6 Commana FUNE ON eia 7 6 ARONET A Cal aiaia Candid CASA A LUMBER ELS 7 7 US IE Call for DSGI e M 7 7 Awangga cal or TIRE saccade 7 8 Besretort E PIU ILE E o o IURI Ambiguity Resolution Switch for Voice Calls erciieene runter trn tette kin ntiaes 7 9 Multi A to Answenng Of Data Calls uerius sciiete recrute noci Et aruit a 7 9 Data Call Indication 1 errans m Saat dU Disable Inbound Call DOFPIEGIDE susstspcozxssyncessni petra apto tcr rte iacens 7 10 Point do Palnt Configuratio uiis asses ciere cct ides ctt rese CREE iea 7 11 PCI a Cal er 7 11 Paging s iab DOS ses eet iq Ate nn rer rer e M Creer rrr re rrr tre ret 7 11 Flacno eal TO TRO scctsnssecdicectesinin es cannvnnda ondverordnadexsaraaaniumemedaaanwneds os Perce e Usor To Usor psp e 7 13 Chapter 8 Analog Call Handling AT Commands Tor Analog Calls siisii pesad dmt rt ned an ati ta
85. ice band data call if the amp ZI number assignment can tell which of the analog adapters is being addressed then the call is delivered to the proper destination Sometimes however ambiguity of address matching may exist This ambiguity may exist if the amp ZIn numbers of the various protocols are either unassigned or not matched or the address information is absent in the incoming setup message In this case users may want to set answering priority to an analog port The AT amp Ln command sets the address ambiguity resolution flag as follows e AT amp LO The analog adapter 1 has the higher priority to answer a voice or voice band analog data call If the analog adapter 1 is busy the call is routed to the analog adapter PHONE 2 AT amp LI The analog adapter 2 has the higher priority to answer a voice or voice band analog data call If the analog adapter 2 is busy the call is routed to the analog adapter PHONE 1 Multi Auto Answering of Data Calls When an ISDN data call comes in the Model XM128 modem can determine the protocol to be used in one of two ways One is way is through the information conveyed by the setup message For DSS1 this information includes the bearer capability low layer compatibility or high layer compatibility information elements for 1TR6 it includes the Service Indicator as well as an Additional Octet of the Service Indicator The other way is by the Multi Auto answering process The Model XM128 mode
86. ifferent types of interfaces e An S T interface The Model XM128 modem with an S T interface is called a Model XM128S modem and requires an NT 1 device to be connected between the modem and the ISDN wall connection e AU interface for American ISDN The Model XM128 modem with a U interface is called a Model XM128U modem and can be connected directly to the ISDN jack installed by the telephone company SPID Setup Service provider identification SPID numbers are needed unless your switch type is AT amp T 5ESS with Point to Point Protocol The ISDN switches use SPID numbers to represent the subscribed network services Each SPID number corresponds to one terminal end point identifier Different switches might provide different rules for the SPID number format You should get the SPID number from your local telephone company Ordering ISDN Service This section provides information about ordering an ISDN line from your telephone company Follow these guidelines and use the information to fill in the appropriate worksheet in this appendix e Provide the following ISDN codes to the telephone company S EZ ISDN 1 Each code describes a set of capabilities and features that are available in the Model XM128 modem Providing these codes ensures that your ISDN line is installed for maximum compatibility G 4 ISDN Reference Reference Guide for the Model XM128 ISDN Digital Modem Make sure the telephone company provides you w
87. in verbose form Xn n 0 7 Result code options See the options table See also S registers 23 3 to 23 5 5 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes Zn n 0 4 Resets the Model XM128 modem and sets power on profile See also S registers15 5 to 15 7 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes Zn Resets the Model XM128 modem and loads user profile n 0 3 Z4 Resets the Model XM128 modem and loads factory settings Basic command summary help Description of ATI3 Output The Link Status Report output is displayed on the screen as follows NETGEAR ISDN Modem LINK STATUS REPORT Connect DTE Speed Error Control Level Protocol Link Speed Octets Received 0 Octers Sent Cause Cause Value HDLC FCS Error HDLC Receive Over run HDLC Transmit Under run oOo AT Command Set Reference C 7 Reference Guide for the Model XM128 ISDN Digital Modem Table C 2 shows the outputs for the AT13 commands Table C 2 ATI3 command output Output parameter Output value description Connect DTE Speed Current online DTE speed Error Control Level Error control protocol used for current session Protocol Link Speed Current online DCE speed line speed Octets Received Number of data octets received from
88. ing Tip Not connected 48V INIIAI AJOJN 48V RTN E 2 Connector Pin Assignments Reference Guide for the Model XM128 ISDN Digital Modem RJ 11 Plug and Connector Figure E 2 shows an RJ 11 plug and an RJ 11 connector 4 1 7895MFA Figure E 2 RJ 11 plug and RJ 11 connector Table E 3 lists the pin assignments for RJ 11 plugs and the RJ 11 connectors for the PHONE 1 and PHONE 2 ports Table E 3 RJ 11 connector pin assignments Pin Assignment 1 Not connected 2 Ring 3 Tip 4 Not connected Connector Pin Assignments E 3 Appendix F Serial Port Interface This appendix provides information about the serial port interface for the Model XM128 ISDN Digital Modem RS 232 Serial Interface Table F 1 describes the RS 232 25 pin serial port interface for the Model XM128 modem Table F 1 Serial port interface Pin number TU TSS Ee Signal pin description eee signal name signal name 1 101 AA Protective ground GND a 2 103 BA Transmitted data TXD 3 104 BB Received data RXD lt 4 105 CA Request to send RTS 5 106 CB Clear to send CTS lt 6 107 CC Data set ready DSR 7 102 AB Signal ground GND a 8 109 CF Data carrier detected DCD lt 15 114 DB Transmit clock signal source DCE lt 17 115 DD Synchronous receive clock lt 18 141 Local analog loopbac
89. interface layer adaptation protocol without error control and is thus inadequate for V 42bis X 75 ISDN Communications Europe This section describes how to set up and configure your Model XM128 modem with X 75 protocols Refer to Table 6 5 for the X 75 protocol specifications for Europe The X 75 protocol was originally designed for packet switched signaling systems in public networks to provide data transmission services Now however it is also used as the link layer for telematic services as defined in T 90 in ISDN These services include both the ISDN circuit switched mode DTE DTE communication and the ISDN packet switched mode DTE DCE communication Answering an X 75 Call There is no need to configure the ISDN mode to the protocol of an incoming call The Model XM128 modem is able to determine the correct protocol to use by examining the data coming in from the remote site Protocol determination takes place if the device is set to auto answer or after an answering command is issued One exception to this process is when the ISDN data call is carried through speech bearer In this case you need to make an MSN entry for the phone number from which you are expecting the data over speech bearer call to be coming for the X 75 protocol Use AT amp ZIOzn Refer to Data over Speech Channel on page 6 7 for further information To allow the Model XM128 modem to answer the incoming call you need to set SO to a value greater t
90. ion and description Cn n 0 3 Character length including start stop and parity bit See also S register 15 3 and 15 4 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes CO 10 bit character length C1 11 bit character length C2 9 bit character length C3 8 bit character length Dn n 0 39 Sets default dial pointer at telephone directory location n See also S register 29 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes DO See also S35 4 and 38 0 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes Gn Security function selection See also S registers 36 5 to 36 7 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes G3 Enables type 2 security with password check G4 Enables type 2 security with password check and callback G5 Enables type 2 security with password check and callback remote site enters the callback number GCn n 0 1 Callback function selection GCO Disables callback function GC1 Enables callback function HCn s n 0 4 Assigns callback phone number s to storage location n Hn n 0 39 Modifies user password table at location n HS Modifies supervisory password Default NETGEAR T Recalls the last CND Calle
91. is able to auto switch for PPP MPPP V 120 X 75 and V 110 protocols over speech channel In most cases you can rely on the auto switching feature for your applications If you need more specific settings for answering calls refer to Answering a Call Using MSN on page 5 5 6 4 ISDN Overview Reference Guide for the Model XM128 ISDN Digital Modem Determining the Packet Length The user s information is sent on a frame by frame basis for V 120 and X 75 sometimes called packetized The maximum frame length on the sending side should not exceed the maximum frame length that the receiving side allows Sometimes this information is exchanged during handshaking However few manufacturers if any have implemented this mechanism If the sending side sends packets greater than what the receiving side allows the receiving side discards the frame and replies with a Frame Reject Frame FRMR The FRMR indicates that the information received is too long Both sides then reset their link layer negotiation and send the frame again Usually this process repeats until the call gets disconnected The Model XM128 modem has a fixed maximum receiving frame size of 2048 octets which is larger than most devices can support The default maximum sending frame size is 252 octets for V 120 and 2048 for X 75 If you need to change the maximum sending frame size the ATCL command is used To change the maximum sending frame size use the following com
92. isters ATSn x Command Bit Decimal Hexadecimal Function and perau or description reference S15 Bitmapped register 130 0 1 0 0 Even parity 1 1 Odd parity 2 2 No parity 2 0 0 1 stop bit 4 4 2 stop bits 4 3 0 0 10 bit character length CO 8 8 11 bit character length C1 16 10 9 bit character length C2 24 18 8 bit character length C3 7 5 0 0 Profile 0 as active settings after ZO power on 32 20 Profile 1 as active settings after Z1 power on 64 40 Profile 2 as active settings after Z2 power on 96 60 Profile 3 as active settings after Z3 power on 128 80 Factory default as active settings Z4 after power on 16 Test status register 000 No test in progress amp TO 9 9 Loopback test in progress amp T9 10 A Loopback with self test in progress amp T10 18 Forces the Model XM128 modem 000 to fix baud rate when idle 0 Disables fixed baud function n 1 Enables baud rate fixing at idle n 0 15 baud rate value settings n the same as S20 value Status Registers and Result Codes D 5 Reference Guide for the Model XM128 ISDN Digital Modem Table D 4 Extended S registers ATSn x continued Command Bit Decimal Hexadecimal Function and description Default or reference 20 DTE speed bps auto detected from AT command 003 230400 bps 115200 bps 57600 bps 38400 bps 19200 bps 9600 bps 4800 bps 2400 bps 1200 bps 460800 bps nim
93. ith The switch type information Ask the telephone company representative which switch type is available in your area Select the appropriate worksheet in this appendix and complete the information to use as a guide The three types of worksheets provided are AT amp T SESS Northern Telecom DMS 100 and Siemens EWSD The switch protocol Ask the telephone company representative which switch protocol you will be using to communicate with the telephone company switch The SPID numbers Determine the number of SPID numbers your configuration requires and request that quantity The Directory numbers In most cases you will have two directory numbers Determine and request the appropriate quantity ISDN Reference G 5 Reference Guide for the Model XM128 ISDN Digital Modem Order Form for AT amp T 5ESS Switch NI 1 ISDN To order ISDN service for the AT amp T switch provide the information on this form to your local telephone company by photocopying and faxing this order form First Name Last Name Address City State Zip Telephone analog Refer to Table G 1 for information about your configuring your ISDN line for the AT amp T switch Table G 1 ISDN line configuration Line type Standard 2B D NI 1 or Custom Data line class Point to Point PPP or Multipoint Line code 2B1Q Interface type U interface with RJ 45 jack B1 service On demand DMD B2 service On de
94. k test 20 108 2108 1 CD Data terminal ready DTR Connect DCE to line 21 140 Remote digital loop test Serial Port Interface F 1 Reference Guide for the Model XM128 ISDN Digital Modem Table F 1 Serial port interface continued Pin number TU TSS EI Signal pin description EE E signal name signal name 22 125 CE Ring indicator RI lt 24 113 DA Transmit clock signal source DTE 25 142 Test indicator lt Asynchronous Cable Connections Table F 2 provides information about the asynchronous flow control cable connection Table F 2 Asynchronous flow control cable connection Modem Signal To PC To DCE To To NeXT DCE DB25 DTE DB9 Null DB25 MAC Mini8 68 040 Mini 8 2 TXD 3 3 3 3 3 RXD 2 2 5 5 4 RTS 7 5 1 6 5 CTS 8 4 2 8 6 DSR 6 20 7 Ground 5 7 4 8 4 8 CD DCD 1 20 20 DTR 4 6 8 1 1 22 RI F 2 Serial Port Interface Appendix G ISDN Reference This appendix explains ISDN technical terms The appendix also provides you with forms to assist you when working with your local telephone company to set up ISDN services to use with your Model XM128 ISDN Digital Modem ISDN Overview ISDN is a global system that provides a variety of high speed digital communication solutions while maintaining compatibility with existing analog voice modem data and fax protocols ISDN is
95. ls for the analog adapter PHONE 1 amp Sn Data Set Ready DSR function selection See also S register 21 3 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes amp S0 DSR is overridden DSR is always on amp S1 DSR according to CCITT ITU TSS See also S registers 41 5 and 44 4 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes amp Tn Model XM128 modem testing amp T9 Initiates ISDN loopback test amp T10 Initiates ISDN loopback with self test amp Vn Views profile settings amp VO Views current active settings amp V1 4 Views the n 1 th user profile settings amp V5 Views factory default settings amp V6 Views analog adapter PHONE 1 setting amp V7 Views analog adapter PHONE 2 setting C 10 AT Command Set Reference Reference Guide for the Model XM128 ISDN Digital Modem Table C 3 Extended AT amp command set continued Command Options Function and description amp Wn n 0 3 Writes current settings to user profile n in nonvolatile RAM See also S register 35 6 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes amp Z Display all the phone numbers stored in nonvolatile RAM amp Zn s n 0 39 Write phone number s to NVRAM at location n n 0 39
96. m determines the protocol by monitoring the B channel signal sent by the calling site With either method the data call can be identified by the modem to be X 75 V 110 V 120 or PPP MPPP Async to Sync conversion 6 8 ISDN Overview Reference Guide for the Model XM128 ISDN Digital Modem If the address matching process is again unable to tell which protocol to use the Model XM128 modem goes into the Multi Auto answering Routine by examining the B channel data pattern and hence determining the protocol to use When alerted the Model XM128 modem sends a RING message to the DTE in the following format RING FM 17145522863T0 17142630398 Understanding ISDN Communication Protocols Table 6 5 shows the specifications of different ISDN protocols Table 6 5 ISDN protocol specifications Parameter V 110 V 120 X 75 Layer 1 80 Bits Framing HDLC HDLC Layer 2 None LAPD LAPB Transparent Layer 3 None V 120 ISO8208T 70 NL Error Control No Yes Yes V 42bis No Yes Yes Async or Sync if used Async Only Async Only Async Only with V Series DTE Bundle No Yes Yes Max Line Speed Async 38 4 Kbps 64 Kbps 64 Kbps Sync 64 Kbps 128 Kbps 128 Kbps AT Command ATB10 ATB20 ATBOO Transparent Configuration ATBO1 T 70 NL ISDN Overview 6 9 Reference Guide for the Model XM128 ISDN Digital Modem V 110 ISDN Communications This section describes how to set up and configur
97. mand DMD Access rate 64 Kbps Maximum B channels 2 Circuit switched voice 2 Circuit switched voice channel Any Circuit switched data 2 Circuit switched data channel Any D channel packet No Electronic Key Telephone Sets EKTS No Terminal Type Type A Information the telephone company must provide Switch Protocol __ NI 1 __ Point to Point __ Multipoint Number of SPIDs 0 1 2 ISDN 1 SPID 1 ISDN 2 SPID 2 G 6 ISDN Reference Reference Guide for the Model XM128 ISDN Digital Modem Order Form for DMS 100 Switch NI 1 or Custom ISDN To order ISDN service for the DMS 100 switch provide the information on this form to your local telephone company by photocopying and faxing this order form First Name Last Name Address City State Zip Telephone analog Refer to Table G 2 for information about your configuring your ISDN line for the DMS 100 switch Table G 2 ISDN line configuration Line type Standard 2B D NI 1 or custom Line code 2B1Q Interface type U interface with RJ 45 jack Access rate 64 Kbps Directory numbers logical terminals 2 Bearer service Circuit switch voice and data on any B channel Circuit switched service Yes Packet switched service No Terminal endpoint identifier TEI Dynamic Electronic key telephone sets EKTS No Call appearance handling CACH No Information the telephone company must provide Switch protocol __ NI 1 __ P
98. mand Set Reference Reference Guide for the Model XM128 ISDN Digital Modem Table C 1 Basic AT command set continued Command Options Function and description DAs Dial s number and options that follows for the analog adapter PHONE 1 DBs Dial s number and options that follows for the analog adapter PHONE 2 Dis Dial s number and options that follows for ISDN data call DL Repeat last ATD command DNn m DNO User enters DNs USA switches First phone number m seven digit phone number for North American switches DN1 Second phone number m seven digit phone number for North American switches DSn n 0 39 Dial number stored in nonvolatile RAM at location n Use a plus sign to dial two consecutive numbers for bundling or MPPP calls See also S register 44 3 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes En Command mode local echo of keyboard commands See also S register 23 0 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes EO Echo off E1 Echo on Hn On off hook control HO Hang up the Model XM128 modem or ISDN same as the command ATH H3 Hang up the analog adapter PHONE 1 H4 Hang up the analog adapter PHONE 2 Display inquired informa
99. mands and follow these steps 1 Enter ATCL252 set the frame size to 252 octets user value between 1 and 2048 You should receive this message OK 2 Enter ATCL to inquire about the current setting of the packet length You should receive this message Maximum user data length in a packet byte 252 ISDN Overview 6 5 Reference Guide for the Model XM128 ISDN Digital Modem Answering a Call Using MSN When answering an incoming call the call is first identified if the caller number matches the Multiple Subscriber Number MSN settings The MSN supplementary service enables multiple ISDN numbers to be assigned to a single ISDN BRI line It allows the caller to select through the public network one or more distinct terminals from a variety of terminal choices The Model XM128 modem supports many different communication protocols and two analog adapters Table 6 3 shows the commands used to assign each of the ports to an ISDN number Table 6 3 Commands for assigning ISDN numbers Command Description amp ZI0 s Assigns the MSN phone number for X 75 amp ZIl s Assigns the MSN phone number for V 110 amp ZI2 s Assigns the MSN phone number for V 120 amp ZI3 s Assigns the MSN phone number for PPP MPPP amp Zl4 s Assigns the MSN phone number for ISDN data protocol auto detection amp ZI5 s Assigns the MSN phone number for PPP MPPP amp Zl6 s Assigns the MSN phone number for Phone 2 amp ZI7 s Assi
100. mended that users get involved in this internal interface The AT commands responses on the other hand are in a standard user interface An analysis of these commands and responses might prove very informative All messages captured by the EPA are tagged with a time stamp according to a free running timer that starts at the beginning of data capture The resolution of this timing information is in 0 01 second The commands listed in Table 10 2 determine the kind of protocol data to be captured by the EPA Table 10 2 EPA Commands AT Command Description ATCDn n 0 Disables the capture of D channel protocols n 1 Enables the capture of D channel protocols default ATCBn n 0 Disables the capture of B channel protocols default n 1 Enables the capture of B channel protocols ATCCn n 0 Disables the capture of DTE DCE interface protocols default n 1 Enables the capture of DTE DCE interface protocols The EPA starts to capture data when the command ATCT is issued This capturing process continues until the command ATC is issued The EPA maintains 8 Kbytes RAM as a ring buffer In case the buffer is full the earliest data captured is overwritten by the latest data Analyzing the Captured Data To view the analyzed result use the command ATC The relevant AT commands are summarized in Table 10 3 Table 10 3 Commands for analyzing captured data AT Command Description ATCT
101. mmand AT amp ZOx Origination_EAZ where x I for ISDN data calls A for the analog adapter 1 and B for the analog adapter 2 The command AT amp ZOx removes the assignment of the origination EAZ The number assigned by AT amp ZOx Origination_EAZ if any can be used for the Origination Address W element while dialing The default settings of origination EAZ of all the types of calls are UNASSIGNED meaning the setup message sent by the Model XM128 modem contains no Origination Address W element The command AT amp ZO can be used to list the current settings of the origination EAZs Answering a Call The incoming call first must be identified as either an ISDN data call or a voice call including the voice band data call ISDN data calls are routed to the digital communications portion of the Model XM128 modem Voice calls or voice band data calls are assigned to the analog adapters Answering a Call for DSS1 The Multiple Subscriber Number MSN supplementary service provides the possibility for assigning multiple ISDN numbers to a single ISDN BRI line Calling users can select via the public network one or more distinct terminals on a BRI line Advanced ISDN 7 7 Reference Guide for the Model XM128 ISDN Digital Modem In some areas however it is very expensive to get additional subscriber numbers The subaddress which is transferred transparently by the ISDN network between the calling user and the addressed user can
102. mp T9 command invokes an ISDN loopback test connection The loopback point is in the S T interface chip Siemens 2086 chip or the U interface chip Siemens 2091 chip just behind the line transformers It checks almost every part of the Model XM128 modem and RS 232 cable except the passive front end of the ISDN S T or U interface During this test data from the terminal or computer is sent through the DTE interface to the transmitter of the Model XM128 modem Data is then packetized to the proper frame format according to the B channel protocol selected Finally the data is looped back to the receiver depacketized and sent through the DTE interface back to the terminal or computer screen You can tell if anything is wrong by looking at the screen The screen shows the data you sent to the Model XM128 modem Loopback with Self test AT amp T10 The AT amp T10 command invokes an ISDN loopback connection with self test The data is generated by the Model XM128 modem and goes through the same path as the above loopback test does The data pattern is printable ASCII characters so you can see the result on the screen The looped back data is compared with the transmitted data Should an error occur the LNK LED starts to flash Any character sent through the DTE interface to the Model XM128 modem discontinues the test 10 2 Troubleshooting Reference Guide for the Model XM128 ISDN Digital Modem B1 B2 Loopback with Self test An AT and T11
103. n 80 n 0 Disable outgoing low layer compatibility default S80 n 1 Enable outgoing low layer compatibility Example ATS80 4 0 disables low layer compatibility message for analog port 2 Control of ISDN Phone Numbers and Subaddresses The calling party number information element identifies the origin of a call and the called party number information element identifies the destination of a call The calling party subaddress information element identifies the subaddress associated with the origin of a call The called party subaddress information element identifies the subaddress of the destination of a call Each type of outgoing call can be assigned with one number subaddress pair by using the AT amp ZOx s command The possible values for x are as follows e x Ifor ISDN data calls e x A for the analog adapter 1 e x B for the analog adapter 2 Advanced ISDN 7 3 Reference Guide for the Model XM128 ISDN Digital Modem The number subaddress string s is defined as s Yn Nn own number Zn own subaddress Yn specifies the type of number e YO for unknown default if Yn is omitted e Y for international number e Y2 for national number e Y3for network specific number e Y4 for subscriber number Nn is the identifier of the numbering plan e NO for unknown default if Nn is omitted e N1 for ISDN numbering plan Rec E 164 default for Australia if Nn is omitted e N3 for data numbering plan Re
104. n MSN ISDN data lists all speech voice calls are sent to either PHONE 1 jack or PHONE 2 jack The entry to use would depend on the type of data call that you are expecting If you expect only PPP type of calls you should enter the number that the remote user used to dial in to entry 3 AT amp ZI3 xxx or entry 5 A amp ZI5 xxx After this number is set when the caller dials in to this number the Model XM128 modem attempts to use PPP protocol to handshake with this remote user This handshake takes place whether the setup message from the switch indicates an ISDN data call or a speech voice call Best effort Call Answering If some numbers have been set using amp ZIn command as can be seen by the AT amp ZI command and they are not matched with the address of the incoming call the Model XM128 modem by default ignores the call because it may be intended for other devices that share the same S T interface SO bus with the Model XM128 modem ISDN Overview 6 7 Reference Guide for the Model XM128 ISDN Digital Modem If you want the Model XM128 modem to answer inbound calls using all possible protocols refer to Table 6 4 for the commands used to set the best effort call answering bit Table 6 4 Best effort call answering bit commands Command Function ATS119 3 0 Answer call only when number matched by default ATS119 3 1 Best effort call answering Ambiguity Resolution Switch for Voice Calls For a speech or vo
105. n m commands The call is accepted using the specific protocol if the assigned number of this protocol matches with the received address Best effort Call Answering If some numbers have been set using the amp ZI command as can be seen by the AT amp ZI command and they are not matched with the address of the incoming call the Model XM128 modem by default ignores the call because it may be intended for other devices that share the same S T interface SO bus with the modem 7 8 Advanced ISDN Reference Guide for the Model XM128 ISDN Digital Modem If you want the Model XM128 modem to answer inbound calls as often as possible you can set the best effort call answering bit as follows e 119 320 for Answering call only when number matched by default e 119 3 1 for best effort call answering Ambiguity Resolution Switch for Voice Calls For a voice or voice band data call if the amp ZI number assignment can tell which of the analog adapters is being addressed then the call is delivered to the proper destination Sometimes however ambiguity of address matching may exist This ambiguity may happen if the amp ZI numbers of the various protocols are either unassigned or not matched or the address information is absent in the incoming setup message In this case users may wish to set the priority of answering a call by the analog adapter PHONE 1 or the analog adapter PHONE 2 The AT amp Ln command sets the address ambiguity
106. nal printable characters show on the terminal screen 3 Turn power to the modem off and then back on again Using The Embedded Protocol Analyzer This section describes how to set up the embedded protocol analyzer EPA and capture and analyze the protocol data 10 4 Troubleshooting Reference Guide for the Model XM128 ISDN Digital Modem Setting up the Embedded EPA The EPA records and analyzes various protocols on the B channel D channel and DTE DCE interface The results are displayed with ANSI color This professional tool is designed for hobbyists as well as users with technical backgrounds The EPA enables you to examine messages exchanged between your Model XM128 modem and the Central Exchange office when making an ISDN call You can review the packets sent or received through the B channel for X 75 or V 120 protocols to or from the remote site You can also check the AT commands issued from an application software program This helps you understand their causal relationship with other events In addition to its tutorial purpose the EPA is very useful for diagnostics If you have compatibility problems with your Central Exchange or with the TA at the remote site the EPA is your first aid resource According to the analysis of the EPA you might decide to fix the problem yourself modify the configuration and try again or log the analyzed results as a file a very comprehensive bug report and then send it to NET
107. nchronous communications between most PCs and your Model XM128 modem the B channel operates in synchronous mode In order to convert the asynchronous communication to synchronous communication it is necessary to use a Rate Adaption Protocol In North America the V 120 Protocol is the most popular Rate Adaptation Protocol used The V 120 Protocol is an ITU T protocol that supports synchronous and asynchronous rate adaption and provides link layer error control NETGEAR also implements V 42bis data compression on top of V 120 allowing the user to achieve even higher data communication throughput The Model XM128 modem also supports high level data link control HDLC asynchronous to synchronous conversion from Point to Point Protocol PPP This protocol is very popular for Internet access and remote access applications Currently most of us still use plain old telephone service POTS for our regular communication needs The Model XM128 modem provides two POTS ports PHONE 1 and PHONE 2 for you to connect analog devices this feature lets you continue to use analog communications You can connect phones fax machines or analog modems to the PHONE 1 and PHONE 2 ports while using one of the idle B channels even if the Model XM128 modem is busy doing data communications Terminal Adapter or Digital Modem A terminal adapter TA allows users to send and receive data over the ISDN network You can send and receive both data and voice simultane
108. ncluded in a user to user information element which is sent with the first valid message that follows If the ATT4 lt message gt command is issued before dialing the user to user information element is sent in the setup message Whether the information element can be sent to the called party or not is switch dependent If the switch supports this information element the called party can see the message before the call is answered During a call connection session the D channel is still used to exchange user to user information For the single stream configuration both sides must be in Escaped state because only then can they send the AT commands and view the responses The user to user information element is a supplementary service that has to be invoked on a per call basis Advanced ISDN 7 13 Chapter 8 Analog Call Handling This chapter outlines the steps required to place and answer analog calls through the ISDN line for your Model XM128 ISDN Digital Modem The analog adapters enable you to connect analog devices for example telephone fax or modem to an ISDN basic rate line Any conventional analog telephony equipment that supports desktop management task force DTMF tone pulse dialing can be plugged into either of the two RJ 11 connectors labeled PHONE 1 and PHONE 2 on the back of the Model XM128 modem The analog adapters use RJ 11 phone jacks The pin assignment of the connectors and plugs are shown in Appendix
109. nect then it calls back according to the following settings of bit 6 of S119 e 119 6 0 This setting prompts the modem to connect and then to call back e S 119 6 1 This setting prompts the modem to keep the connection If the CPN does not match what is stored in the table the local modem disconnects the call If CPN is unavailable in the setup message the local modem disconnects the call and calls back using the prestored number corresponding to the dial in password B 2 Security Functions Reference Guide for the Model XM128 ISDN Digital Modem Level 3 Security After the password is matched the local modem prompts the remote user to enter a callback number The three levels of security are summarized in Table B 2 Table B 2 Levels of security Level 1 Level 2 Level 3 Password Check Yes Yes Yes CPN Check OK N A Call back Prompts the remote and S119 6 0 user to enter callback CPN Check OK N A Keep the oa for calling and S119 6 1 connection an CPN unmatched N A Disconnect CPN not Available N A Call back using the corresponding prestored number AT Commands G1 for Type 1 G2 for Type 1 G5 for Type 2 G3 for Type 2 G4 for Type 2 Setting and Modifying Passwords The AT Hn command where n represents the index to the entry can define 40 user passwords Numbers between 0 and 39 are accepted The corresponding 40 callback numbers are defined by the AT amp Zn xxx command w
110. nection is enabled in answer mode only amp J2 Bundle connection is enabled in call mode only amp J3 Bundle connection is enabled in both directions AT Command Set Reference C 9 Reference Guide for the Model XM128 ISDN Digital Modem Table C 3 Extended AT amp command set continued Command Options Function and description amp Knn V 120 X 75 compression control The command amp K must be followed by two digits See also S register 83 2 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes amp KOO Disables V 42bis amp K44 Enables V 42bis amp Ln Analog port selection during call answering See also S register 84 5 Fora description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes amp LO Sets priority to analog port PHONE 1 amp L1 Sets priority to analog port PHONE 2 amp On Set default call type for conventional dialing commands See also S register 83 4 and 83 5 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes amp O0 ATDs ATDPs and ATDTs default to make calls for analog adapter PHONE 2 amp O2 ATDs ATDPs and ATDTs default to make ISDN data calls amp OS3 ATDs ATDPs and ATDTs default to make cal
111. ng the power off does not erase the information The only time you have to reconfigure your line is when you perform a hardware reset or when you change options on your ISDN line Note If you perform a hardware reset and have to reenter the SPID number s and switch type again it is easier if you write down or store all the relevant information so it can be easily retrieved Table 4 1 shows a list of example terminal programs for different operating platforms For instructions on how to use a terminal program refer to the instructions that came with the program Table 4 1 Terminal programs Operating system Program Windows 95 Hyper Terminal Windows 3 x Terminal Procomm Plus for Windows Qmodem for Windows UNIX Minicomm DOS PC Plus Qmodem Macintosh Z Term Communicate Lite Understanding AT Commands AT commands configure and control the Model XM128 modem through a terminal program Command statements are usually sent to the modem from the computer keyboard Command statements must be written in a specific form in order for the Model XM128 modem to recognize them A command statement begins with the letters AT or at It is then followed by one or more commands and the Enter key AT commands can be issued only when the Model XM128 modem is in command or offline mode After the Model XM128 modem has established a connection with the remote device it goes into online mode and the characters se
112. nn Because there are a number of combinations of voice or voice band data services on the analog adapters users may want to control the outgoing service indicator themselves for some specific applications The following information is recommended to configure 104 S107 service indicator and S108 S111 additional information octet according to the terminal types e Service indicator e 107 analog PHONE 1 e 104 analog PHONE 2 Addi S I e 111 analog PHONE 1 e 108 analog PHONE 2 e Telephonel Fernsprechen 1 3 1 KHz e Modem analog dienste 3 Daten ber Modem e 4 Btx ber Modem e G3 Fax3 analog dienste 2 Fax Gruppe 3 Advanced ISDN 7 5 Reference Guide for the Model XM128 ISDN Digital Modem Control of EAZ ENDGERATEAUSWAHLZIFFER EAZ or terminal selection code is the last digit of an ISDN phone number in 1TR6 Usually EAZ 0 indicates that a global call any terminal on the SO interface which is service compatible with the incoming call can answer the call Other values of EAZ 1 2 9 provide the possibility for assigning multiple ISDN numbers to a single ISDN BRI line A calling user can select via the public network one or more distinct terminals on a single BRI line With its highly integrated multifunction features the Model XM128 modem can be imagined as a black box containing multiple distinct terminals Each of these internal terminals can be assigned one EAZ using the
113. nt from your computer through the modem are transmitted to the remote device 4 2 Configuration Reference Guide for the Model XM128 ISDN Digital Modem In order to issue an AT command statement you first need to run your communications software and configure it to the port connected to the Model XM128 modem Refer to your communications software manual for more information Table 4 2 lists the supported AT command types Table 4 2 Supported AT command types Type of AT command Example Basic AT Hayes compatible ATA Basic AT online Help AT Extended AT amp AT amp F Extended AT command AT I1 S Register command ATSO 1 S Register bitmapped command ATS13 1 1 set S Register bit 1 equal to 1 Register inquiry command SATSO or ATS13 1 You can also browse the list by using the command AT Quick Tips for Issuing AT Commands The following is a list of quick tips when issuing AT commands e The Enter key must be pressed to execute a command e Multiple AT commands can be combined into one line for example AT amp O2 and ATBO2 are combined as follows AT amp O2B02 e The Model XM128 modem processes commands from left to right The AT command that appears to the right might overwrite the command to the left for example ATB13B14 results in ATB14 because both B13 and B14 cannot coexist e If you see duplicated characters for each one you type your Model XM128 modem and
114. nt to multipoint signaling DDI function Inbound call ignored when no MSN EAZ is matched Inbound call accepted using default protocol when no MSN EAZ is matched V 110 user rate 19200 bps if DTE speed is greater than 19200 bps 16 10 V 110 user rate 38400 bps if DTE speed is greater than 38400 bps 0 Enables normal MSN function amp Zin 32 20 Treats the number assigned by amp Zl n as subaddress and matches with the called party subaddress for inbound call routing 120 Accumulated charging unit MSB byte for B1 channel 121 Accumulated charging unit LSB byte for B1 channel 122 Accumulated charging unit MSB byte for B2 channel 123 Accumulated charging unit LSB byte for B2 channel 124 Empties IP packet interval for PPP 000 0 255 0 FF Units of 1 sec 125 1 6 0 Sub persist time interval KSxn 0 125b1 6 is in second unit KSSn 128 80 125b1 6 is in minute unit KSMn D 18 Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Table D 4 Extended S registers ATSn x continued Command Bit Decimal Hexadecimal Punehen and Derant or description reference 126 0 255 0 FF Add threshold for BOD in Kbps JAn 48 unit 127 0 255 0 FF Sub threshold for BOD in Kops JSn 32
115. o the modem a self test sequence begins The B1 B2 and AA LED lights blink on and then off again After this cycle is complete the PWR power LED remains on If the test routine fails the D LED blinks Refer to Chapter 10 Troubleshooting for more information about the self test and the error codes Installation 2 3 Chapter 3 Setup for Windows 95 and Windows NT 4 0 This chapter contains step by step procedures both for installing the Windows NT and Windows 95 drivers and for configuring Dial Up Networking for the Model XM128 modem Selecting the Appropriate Windows 95 Driver INF file If your computer supports the Plug and Play feature be sure your Model XM128 modem is powered on before starting your computer If you are using a non Plug and Play protocol follow the steps to complete installation 1 9e rU oo ou Open the Control Panel by double clicking the Control Panel icon in your My Computer folder Double click on Modems Click on Add The Install New Modem screen appears Select Don t detect my modem I will select from a list Click on Next Click on Have Disk Insert the NETGEAR Windows 95 driver disk into your floppy drive and click on OK If you have downloaded an updated INF file from NETGEAR s Web site or BBS use Browse to find the location of the updated INF file click on Open then click on OK Setup for Windows 95 and Windows NT 4 0 3 1 Reference Guide for the Model XM1
116. og calls 8 2 auto callback B 4 basic C 2 best effort call answering 6 8 call placing 6 3 capture commands 10 6 dial strings 6 3 EAZ 7 6 EPA 10 7 European switches 8 2 extended C 8 C 12 for analog calls 8 2 frequently used 8 2 ISDN numbers assigning 6 6 Index issuing 4 3 MSN 4 8 placing a call 6 3 result codes 4 4 types supported 4 3 V 110 configuration 6 10 ATXn command D 19 B B channel 10 5 bundling 5 3 embedded protocol analyzer 10 5 protocol 5 1 basic rate interface G 2 best effort call answering 6 8 C cable asynchronous F 2 COM LEDs 1 5 communication speed setting up 4 4 configuring ISDN line 4 1 network 4 1 using a terminal program 4 1 connect strings D 23 conventions xviii CSD Circuit Switched Data 6 4 customer support iii Index Reference Guide for the Model XM128 ISDN Digital Modem D D channel 10 5 10 6 data call indication 7 10 data compression 6 15 data over speech channel 6 7 DCA 5 5 diagnostic command 10 3 dialing out for analog adapter port 1 6 2 for analog adapter port 2 6 2 using ISDN mode 6 1 using speech bearer service 6 2 DSS1 Digital Subscriber Signaling 1 incoming calls 7 7 outgoing calls 7 1 placing calls 7 11 DTE interface operation modes C 1 E EAZ 7 6 embedded protocol analyzer 10 5 10 6 Endpoint Discriminator 5 4 EPA 10 5 EPA See embedded protocol analyzer error correction 6 15 Europe configuration for 4 7 F fe
117. oint to Point __ Multipoint Number of SPIDs 0 1 2 ISDN 1 SPID 1 ISDN 2 SPID 2 __ ISDN Reference G 7 Reference Guide for the Model XM128 ISDN Digital Modem Order Form for EWSD NI 1 ISDN To order ISDN service for the EWSD switch provide the information on this form to your local telephone company by photocopying and faxing this order form First Name Last Name Address City State Zip Telephone analog Refer to Table G 3 for information about your configuring your ISDN line for the EWSD switch Table G 3 ISDN line configuration Line type Standard 2B D NI 1 Line code 2B1Q Interface Type U interface with RJ 45 jack Access Rate 64 Kbps Directory numbers logical terminals 2 Bearer Service Circuit Switch Voice and Data on any B Channel Circuit Switched Service Yes Packet Switched Service No Terminal Endpoint Identifier TEI Dynamic Electronic Key telephone sets EKTS No Information the telephone company must provide Switch protocol __ NI 1 __ Custom Number of SPIDs __ 0 ___ 1 2 ISDN 1 SPID 1 ISDN 2 SPID 2 G 8 ISDN Reference Numerics 1TR6 communication incoming calls 7 8 outgoing calls 7 5 placing acall 7 12 A address ambiguity 6 8 7 9 address matching 6 8 ambiguity resolution 7 9 analog calls 8 1 ANSI 10 5 answer modes 5 3 asynchronous flow control cable F 2 AT commands address ambiguity 6 8 anal
118. onfiguration commands seem 6 10 Tables xiii Table 7 1 S register values and functions cccececeeeeeeeeeeeeeneeeeceeeeeeeeeeeeteenneaaees 7 2 Table 7 2 Outgoing low layer compatibility commands esses 7 3 Table 8 1 Frequently used AT commands sss 8 2 Table 8 2 Frequently used AT commands European switches 8 2 Table 9 1 Definitions for the d modifier sss 9 1 Table 10 1 Power on self test sss ennemis 10 1 Table 10 2 EPA Gommands iecit Pe het ctt eet et et niue ccs 10 6 Table 10 3 Commands for analyzing captured data eeeee 10 6 Table 10 4 Control key functions ssseseennnenm enne 10 7 Table B 1 Types of security e niinc teet teu dre E cepe Receta ELIO gc Lo de deos B 2 Table B 2 Levels of Security aura eio nee oe tette rede EE Rennes B 3 Table B 3 Auto callback commands sse B 4 Table C 1 Basic AT command set ssssssssssssseeeseere enne C 2 Table C 2 ATI3 command output ssssseeeeennm een nennen nnns C 8 Table C 3 Extended AT amp command set sss C 8 Table C 4 Extended AT command set sssessssssssssssesee eere C 12 Table D 1 Binary conversion table 2 c ccceccecceeeeeeeeeeeeeeacaaeeeeeeeeeeseesensennaneeeees D 3 Table D 2 Setting
119. ously by using both B channels The PHONE 1 and PHONE 2 ports in the Model XM128 modem allow you to connect analog devices to the modem to make outgoing calls as well as to receive incoming calls With its auto detect feature the Model XM128 modem monitors incoming calls from both analog and digital devices It monitors these calls without user intervention and makes connections accordingly ISDN Basic Rate Interface Points In the interest of supporting deregulated Customer Premises Equipment CPE the exchange Carrier Standard Association in the United States established a basic rate transmission standard for CPE The standards are defined for equipment to connect to different reference points of the ISDN link Some of these reference points are S T and U They have very specific definitions and provide standard interfaces for equipment connected to them ISDN Reference G 3 Reference Guide for the Model XM128 ISDN Digital Modem Not all the interfaces must exist in actual implementations For example not all houses are equipped with a PBX NT2 In this case the U interface is provided by the NT 1 device An ISDN terminal adapter can be constructed with the functionality of an NT 1 device In this case the terminal adapter connects directly to the U interface The Model XM128 modem connects directly to a U interface without an NT 1 device which can sometimes be quite expensive The Model XM128 modem comes with the following two d
120. ovisioning For bundled connections the two B channels of your ISDN line must be able to handle data circuit switch connections with unrestricted 64 Kbps or 56 Kbps line speeds Two separate data calls can be established consecutively 6 14 ISDN Overview Reference Guide for the Model XM128 ISDN Digital Modem 128 Kbps Speeds BRI ISDN consists of three 2B D logical channels Each B channel can be used independently for a dial up connection running at 56 Kbps or 64 Kbps bits per second The two B channels can be used together for a single data connection to provide 112K with In Band Signaling or 128K when Out of Band Signaling is used It is called a Bundle Connection different from BONDING The type of channel bundling described in the V 120 section is supported only between the following NETGEAR products Model XM128 modem Dialing Prestored Phone Numbers Use ATDSn n 0 1 39 to dial the n 1 th phone number twice for both the bundle connections Use ATDSn Sm n and n 0 1 39 to dial the n 1 th phone number for the first connection and the m 1 th phone number for the second connection For example ATDISO SI Enter dials the number stored in location 0 and the number stored in location 1 for the bundle connection Error Correction and Data Compression with V 120 With V 120 the default setting is for Link Access Protocol Digital LAPD error correction only No data compression is negotiated The followin
121. parity 8 08 Even parity 192 CO 1200 bps 195 C3 2400 bps 196 C4 4800 bps 197 C5 9600 bps 198 C6 14400 bps 199 C7 19200 bps 64 40 38400 bps 160 AO Syne V 110 160 AO 1200 bps 163 A3 2400 bps 164 A4 4800 bps 165 A5 9600 bps 166 A6 14400 bps 167 A7 19200 bps 168 A8 48000 bps 169 A9 56000 bps 170 AA 56000 bps for 56K network 175 AF In band negotiation Status Registers and Result Codes D 15 Reference Guide for the Model XM128 ISDN Digital Modem Table D 4 Extended S registers ATSnzx continued Command Bit Decimal Hexadecimal Function ang Default or description reference 108 n High layer compatibility Non 1TR6 n 0 analog adapter PHONE 2 n 2 ISDN data n 3 analog adapter PHONE 1 0 0 No high layer compatibility information element is sent 1 1 Telephone 4 4 Facsimile Group 2 3 40 28 Teletex service Rec F 220 49 31 Teletex service Rec F 200 50 32 Information interworking for Video Services Rec F 300 T 110 53 35 Telex service Rec F 60 56 38 Message handling systems MHS Rec X 400 series 65 41 OSI application Rec X 200 series S114 I field data length MSB byte 115 field data length LSB byte 117 V 110 user rate Bin D 16 Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Table D 4 Extend
122. ptable to both the analog adapters and the ambiguity resolution bit is set to O or 1 8 4 Analog Call Handling Chapter 9 Modem Upgrade This chapter describes how to upgrade flash electrically erasable programmable read only memory EEPROM firmware on your Model XM128 ISDN Digital Modem Upgrading with Flash EPROM Your Model XM128 modem employs a flash EEPROM that lets you conveniently download updated firmware and program the modem with new features and enhanced functions If you are using Windows 95 or Windows NT use the NETGEAR Internet Configuration Manager to upgrade the firmware For other operating systems use a terminal program that supports the X modem Protocol Obtain the new firmware from the NETGEAR bulletin board system BBS WWW or FTP site Refer to Customer Support on page iii The firmware is distributed in the ONETd vwv file where the extension vvv denotes the version of this firmware Table 9 1 lists the definitions for the d modifier in the file name Table 9 1 Definitions for the d modifier Modifier Definition G German national ISDN 1TR6 E European ISDN DSS1 European ISDN is also used in most other countries including Asian countries A American ISDN AT amp T 5ESS Northern Telecom DMS 100 or National ISDN 1 The active D channel protocol can be chosen by an AT command Note The American firmware version supports both the S T interface and U interface models
123. r This manual Getting Started Using FirstGear CD ROM with bundled software 3 5 inch driver and utility diskettes Warranty Registration Card Call your reseller or customer support in your area if there are any wrong missing or damaged parts Refer to page iii for the location of customer support in your area Keep the carton including the original packing materials Use them to repack the modem if you need to return it for repair Installation 2 1 Reference Guide for the Model XM128 ISDN Digital Modem To qualify for product updates and product warranty registrations fill in the Warranty and Owner Registration Card within 30 days of purchase and return it to NETGEAR Inc Installing the Modem Before connecting any of the devices to your modem make sure the power is turned off on your computer and your Model XM128 modem If connecting to the model with the S T interface you must use an NT 1 device which converts the S T interface to a U interface If connecting to the Model XM128 modem with the U interface you can connect directly to your ISDN line Refer to Figure 2 1 and then the detailed steps that follow for making those connections nian 7860MEA Key 1 Model XM128 modem 2 AC power adapter 3 Station PC Macintosh or UNIX workstation 4 Shielded RS 232 25 pin straight cable 5 ISDN wall connection connected with ISDN cable provided in package 6 Analog
124. r ID information V Views the Password table VC Views the Callback Number table C 12 AT Command Set Reference Appendix D Status Registers and Result Codes This appendix describes the purpose and application of status registers and result codes for the Model XM128 ISDN Digital Modem Status registers S registers contain values that determine and reflect how your Model XM128 modem operates and executes commands You can read the values and change them by using either terminal commands or the panel controls with the same results Every user profile corresponds to a separate set of S register values but when S registers are mentioned in this guide the reference is to those that correspond to the active profile If you want to read or change the values in a profile that is currently inactive you must first recall that profile to make it active SO to S11 are standard AT S registers and S12 to S124 are mostly bitmap configured Changes in the bitmap configuration can have the same effect as issuing AT commands However NETGEAR recommends that you use equivalent AT commands Viewing and Setting S Registers Several AT commands are used to view the values stored in the S registers To view S registers follow these steps 1 Type the AT command ATSr to display the values stored in S registers The S register values may be displayed in either decimal or hexadecimal format when using the commands Bit 3 of S register 84 sets
125. r key e When you read type type the text but do not press the Enter key e When you read press press only the alphanumeric or named key e When you read click click the left mouse button xviii Preface Reference Guide for the Model XM128 ISDN Digital Modem Other Conventions This guide uses the following additional conventions italics courier font Initial Caps Enter Book titles and UNIX file command and directory names Screen text user typed command line entries Menu titles and window and button names Named keys in text are shown enclosed in square brackets The notation Enter is used for the Enter key and the Return key Ctrl C linked with a plus sign ALL CAPS Related Publication DOS file and directory names Two or more keys that must be pressed simultaneously are shown in text Refer to Getting Started Using FirstGear for the Model XM128 ISDN Digital Modem for a quick installation guide Refer to Table 1 to identify the contents of both manuals The subject column in this table identifies the order of basic procedures you must complete to install your Model XM128 modem Table 1 Manual contents Getting Started Using FirstGear Subject for the Model XM128 ISDN Digital Reference Guide for the Model Modem XM128 ISDN Digital Modem Installing modem hardware Chapter 3 Chapter 2 Configuring the modem Chapter 3 If you are using
126. r the analog adapter 1 analog adapter 2 When the hook sensor of the analog adapter detects that the handset on the telephone device is picked up off hook it sends a setup message to the ISDN central exchange to request a connection One B channel if available is assigned to this connection and the exchange waits for the dialed number to route the call At the same time a dial tone is presented to the adapter port to prompt the user to dial Both tone and pulse dialing are accepted A busy tone is heard on the handset if e The B channel is unavailable e The dialed number is undeliverable e The called party is busy This busy tone indicates the failure of the attempt to connect To place another call hang up the phone then pick it up again If the called party is alerted a ring back tone is heard Analog Call Handling 8 3 Reference Guide for the Model XM128 ISDN Digital Modem Accepting an Incoming Call Incoming ISDN calls are directed to one of the analog ports PHONE 1 or PHONE 2 if A voice call is sent to one of the two analog adapters automatically when it is received As the manufacturer default the call is sent to the analog adapter PHONE 1 first then PHONE 2 if PHONE 1 is busy e The MSN is set AT amp ZInzs as shown in Table 6 1 to specify the phone number s the remote user dialed to be sent to specific analog adapter n e The MSN setting for the phone number in the incoming setup message is acce
127. remote Octets Sent Number of data octets sent to remote Cause Verbose disconnection reason for the last session Cause Value Numerical disconnection reason for the last session HDLC FCS Error Errors in frame block checksum If there were many FCS Errors you may have experienced problems on the line HDLC Transmit Under run For processor power measurement of the Model XM128 modem HDLC Receive Over run For processor power measurement of the Model XM128 modem Table C 3 lists the extended AT amp command set Table C 3 Extended AT amp command set Command Options Function and description amp Cn Carrier Detect CD options See also S register 21 4 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes amp CO CD is always on See also S register 842 7 amp C1 CD tracks presence of carrier See also S38 3 and 842 7 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes C 8 AT Command Set Reference Reference Guide for the Model XM128 ISDN Digital Modem Table C 3 Extended AT amp command set continued Command Options Function and description amp Dn Data Terminal Ready DTR options See also S registers 21 6 to 21 7 and 25 For a description of Extended S registers refer to Tabl
128. resolution flag e AT amp LO The analog adapter 1 has the higher priority to answer a voice or voice band data call If the analog adapter 1 is busy the call is routed to the analog adapter PHONE 2 e AT amp LI The analog adapter 2 has the higher priority to answer a voice or voice band data call If the analog adapter 2 is busy the call is routed to the analog adapter PHONE 1 Multi Auto Answering of Data Calls For an ISDN data call if the Model XM128 modem can exclusively determine the protocol to be used by means of the information conveyed by the setup message for DSS1 this information includes the bearer capability low layer compatibility or high layer compatibility information elements for 1TR6 it includes the service indicator as well as the Additional Octet of Service Indicator then the indicated protocol is used Otherwise the Multi Auto Answering process is invoked The Model XM128 modem can monitor the B channel signal sent by the calling site The data call can be identified by the Model XM128 modem as X 75 V 110 V 120 or PPP Async to Sync conversion and MPPP Advanced ISDN 7 9 Reference Guide for the Model XM128 ISDN Digital Modem Data Call Indication Data calls are accepted by the Model XM128 modem in the same way as with any terminal adapter When alerting the Model XM128 modem sends the first Ring message to the DTE with a format as follows RING lt CR gt lt LF gt FM Prefix Calling Par
129. s dad cibi aa RM auda ME DEL tR UAR ala 8 2 Making and Receiving Analog Calls 15 iE e d RNG o RPTRUR FRAIS Creed RI CO Y REG RR RR QU 8 3 Placing a Call from the Analog Adapter TM job pe T EP x Mv bebe gt ED eeu an Incoming Cal et 8 4 Chapter 9 Modem Upgrade Upgrading with Flash EPROM easet eth tacere E Eae vR FE Pate khe E Fase n aanas 9 1 Misc eir RUE 9 2 Kernel Mode DRE pr DU NEUF ORE PE IU pica TU pepe DU Ped eae Oper ee viii Contents Reference Guide for the Model XM128 ISDN Digital Modem Chapter 10 Troubleshooting Poweron SONGS qe 10 1 LOO Da Toate cca ieee are iara Mot M n e RC URP UE 10 2 ISDN Loopback test AT amp T9 T TES biben T VOCS Loopback with Selr Test TAT GT VG iiusaccaciume scuto economics ice anesacu timere c 10 2 BIB Loopback wiih Sell HGBl soe auasnbixpuasestlin chose n ebYRE s e DENK EIE P tINEE ESI Der c E 10 3 The Diagnostic Command soececosieiepeve sis e pb rens RE rErASS TEE eR i s aE Ea s et 10 4 Using The Embedded Protocol Analyzer 1 2 aie tano tuque ci b nore E BER Lori cis 10 4 Setting p tme Embedded EPA sismos 10 5 capung the Frome Dale sanio ER 10 5 Analyzing ins hae PW Data 2i aiite pite ru dial b been d adib veta tp bre iv dbdRbetaIG FO T E busca iste cm bats EE eda iva eM Era Edo eps apio Fui Meo cde bg An MEN REM Vade Ra hades 10 8 Appendix A Technical Specifications E curirisie teip sir e
130. s valid only for American version Pn Northern Telecom proprietary ISDN National ISDN 1 1 SPID mode National ISDN 1 2 SPID mode Reserved AT amp T proprietary point to point or C0 nm or 0 nm AT amp T proprietary point to multipoint 1 SPID mode AT amp T custom point to multipoint 2 SPID mode Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Table D 4 Extended S registers ATSn x continued Command Bit Decimal Hexadecimal Function and description Default or reference S87 0 Bundle connection is disabled amp Jn 32 20 Bundle connection is enabled in answer mode only 64 40 Bundle connection is enabled in call mode only 96 60 Bundle connection is enabled in both directions S89 Bitmapped register Disables the metering pulse of analog adapter PHONE 2 32 32 Enables the metering pulse of analog adapter PHONE 2 Disables the metering pulse of analog adapter PHONE 1 64 40 Enables the metering pulse of analog adapter PHONE 1 100 B channel bundling protocol selection Multiple Link Protocol MLP cFossil channel bundling for European switches only cFos 102 Outgoing ISDN data type value has the same definition as S82 Bnn
131. seeeeeenennnneennn E 1 Figure E 2 RJ 11 plug and RJ 11 eannectgr iuseenseit ttes tiat tima qnit inea resi nter iRRRSA E 3 Figures xi xii Figures Table 1 Table 2 Table 1 1 Table 1 2 Table 1 3 Table 4 1 Table 4 2 Table 4 3 Table 4 4 Table 4 5 Table 4 6 Table 5 1 Table 6 1 Table 6 2 Table 6 3 Table 6 4 Table 6 5 Table 6 6 Tables Manual contents ennaa e E a a nennen nennen nnne nnne nnne ntn n nnns xix Manuals otas uair a ii neers XX Interface optlOns 5 ictum aerarii as 1 3 LED descriptlOriS 2 oc oet reete O eet e bereit re ttt i etta 1 4 Rear panel components ascona anek aapa eene 1 7 Terminal programs renidet a Hate dest eode dea eee en AANA t 4 2 Supported AT command types sssssssseeeeeneeen nennen 4 3 Result codes commands eese esent 4 4 Switches supported by the Model XM128 modem sss 4 5 AT commands for setting protocols sesseee 4 8 AT commands for setting MSN sse eene 4 8 5895 register Values 0 etd er hte i eee afe Biete dde et titt 5 4 Dialing commands sarreria iinei iii iniia a tei see ct ee 6 3 Call placing commands essen nennen 6 3 Commands for assigning ISDN numbers seeeee 6 6 Best effort call answering bit commands sees 6 8 ISDN protocol specifications eesseeee ns 6 9 V 110 c
132. software both have their echo feature turned on the modem defaults to enable command echo To eliminate the double characters turn off software command echo e Use A to repeat the last command No AT prefix is needed for this command The Model XM128 modem supports either verbose result code OK for example or numerical result code 0 for example You can use the ATVn command to set it one way or the other Configuration 4 3 Reference Guide for the Model XM128 ISDN Digital Modem Table 4 3 lists the commands for viewing both the numerical and verbose result codes Table 4 3 Result codes commands Command Description ATVO Select numerical result code ATV1 Select verbose result code Using AT Commands to Verify Modem Response Use AT commands to make sure the Model XM128 modem responds and follow these steps 1 Type the command AT and press Enter You should receive the following response OK 2 Type the command ATI and press Enter You should receive the following response 1291 3 Type the command ATII and press Enter You should receive the following response NETGEAR XM128 ISDN Digital Modem xxxx V x xx 7607 OK In the first line x designates the country or region of operation and the firmware version number The second line is the firmware checksum which changes based on your firmware version Communication Speed Setup Make sure the program is set up to communicate with
133. state or in the data state Only one data connection session is possible at any time To perform various functions of the Model XM128 modem a number of different AT commands can be used The simplex mode is designed for AT command users The guides and descriptions throughout the rest of this manual if not otherwise specified are applicable to this mode The power on default of the DTE interface is in simplex mode as well AT Command Set Reference C 1 Reference Guide for the Model XM128 ISDN Digital Modem AT Command Descriptions The AT command is a command in asynchronous data format issued by the computer to the Model XM128 modem through the asynchronous computer modem interface AT commands control the behavior and actions of the modem To send an AT command from a computer to the Model XM128 modem the following rules apply e You must be running a communication software The modem must be in the command state The commands A A and are exceptions These commands are not preceded by AT or followed by any more characters e The AT command prefix can be typed in either uppercase letters AT or lowercase letters at Do not combine uppercase and lowercase letters in the prefix Table C 1 Table C 2 Table C 3 and Table C 4 list the AT commands supported by the Model XM128 modem An asterisk following a command option or value indicates that it is a default setting when the Model XM128 modem is shipped Table
134. stom point to multipoint 2 SPID Qn n 0 1 Result code displayed See also S register 23 7 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes Qo The Model XM128 modem returns result code Q1 The Model XM128 modem does not return result code Sr b n Set bit b of S register r to value n The value n is a binary digit 0 or 1 Sr b Display value of bit b of S register r Sr n Set S register r to value n which must be a decimal number between 0 and 255 Sr Display value stored in S register r AT Command Set Reference Reference Guide for the Model XM128 ISDN Digital Modem Table C 1 Basic AT command set continued Command _ Options Function and description SPIDn m User enters Service Profile ID SPID m for USA switches SPIDO First SPID number SPID1 Second SPID number if any SPID Display the SPID setting s UPX Download firmware to the flash EPROM using X modem Protocol Vn Sets display type for result codes See also S register 23 6 For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes VO Displays result code in numeric form See also S register 35 7 and the result code table of ATXn For a description of Extended S registers refer to Table D 4 on page D 5 in Appendix D Status Registers and Result Codes Vi Displays result code
135. thern Telecom switch each BRI phone number can be called only once at any given time So if you dial this number it reports busy to any other incoming calls In order to use two B channels for aggregation you must place two calls with different phone numbers To place these calls separate the two numbers with a plus sign after the ATD command For bundling calls with the Northern Telecom switch enter the following commands ATDI phone_number_1 phone_number_2 4 Press Enter The answering Model XM128 modem determines that the call is a bundle request when AT amp J3 is set and two consecutive setup messages are received The two data calls are established as one message The phone company s ISDN line splits it off into two messages That is the ISDN network treats the messages as two independent calls Finally the receiving side receives one bundled message into the computer s serial port The success of a bundle connection initiation is indicated by the connect message reported to the DTE The following two examples are of connect messages CONNECT 115200 V120M 128K LAPD or CONNECT 115200 V120M 128K LAPD V42b with data compression If you are not using American ISDN you have a choice between Multiple Link Protocol MLP or cFos channel bundling CCB two bundle protocols You can set it by the following commands ATS100 0 for MLP channel bundling ATS100 1 for CCB channel bundling Identifying Your Line Pr
136. tion Display product code same as ATI Results 1291 USA 1292 DSS1 1293 1TR6 Display product information and ROM checksum Results XM128 switch V x xx where lt switch gt USA DSS1 or 1TR6 Display link status report Display Microsoft PnP code JAn Add threshold for MPPP in Kbps unit AT Command Set Reference C 5 Reference Guide for the Model XM128 ISDN Digital Modem Table C 1 Basic AT command set continued Command _ Options Function and description JSn n 0 255 Sub threshold for MPPP in Kbps unit 32 KAxn n 0 63 Add persist time interval for BOD BOD disabled if n 0 0 x M in Minute unit or S in Second unit KSxn n 0 63 Sub persist time interval for BOD BOD disabled if n 0 0 x M in Minute unit or S in Second unit Ln n 0 3 Speaker volume control The higher the value the higher the volume 5 Mn M 0 2 Speaker control MO Speaker always off M1 Speaker on until call is answered M2 Speaker always on Nn n 0 3 Ring volume control The No command disables the audio ring function 3 O Return to online state Pn n 0 6 D channel protocol selection USA for American version PO Northern Telecom proprietary ISDN P1 National ISDN 1 1 SPID P2 National ISDN 1 2 SPID P3 Reserved P4 AT amp T custom point to point P5 AT amp T custom point to multipoint 1 SPID P6 AT amp T cu
137. ty Number Subaddress TO Called Party Number Subaddress lt CR gt lt LF gt RING lt CR gt lt LF gt RING lt CR gt lt LF gt The display of address information between the first Ring and the second Ring is disabled by setting ATS84 4 1 The term Prefix is a predefined number string is added in front of the calling party number before indicating it to the DTE Adding Prefix is useful for some automatic dial back up systems The number string is assigned as follows e ATCI lt Prefix gt When and only when the type of number denotes an international number this Prefix is added to the calling party number before indicating it to the DTE e ATCI lt gt This command disables the international number prefix adding function Default e ATCN lt Prefix gt When and only when the type of number denotes a national number this Prefix is added to the calling party number before indicating it to the DTE e ATCN lt gt This command disables the national number prefix adding function Default Note The angle brackets lt and gt are part of this command Disable Inbound Call Connection In some cases the user may require that the Model XM128 modem not answer any incoming calls This response is accomplished by setting the bit 0 of S register S118 as follows e 118 020 to enable answering a call by default e 118 0z1 to disable answering any call 7 10 Advanced ISDN Reference Guide for the Mo
138. use AT Dn or ATS29 n to set the default dial pointer amp Zln s n 0 7 s phone number MSN setting Assign the phone number including subaddress if any for various B channel protocols In answer mode these numbers are compared with the received called_party_number and called_party_subaddress information The call is accepted using the specific protocol if the assigned number of this protocol matches with the called_party_number n 0 Assigns multiple subscriber number MSNs phone number for X 75 n 1 Assigns MSNs phone number for V 110 n 2 Assigns MSNs phone number for V 120 n 3 Assigns MSNs phone number for PPP MPPP n 4 Assigns MSNs for ISDN data protocol auto detection n 6 Assigns the phone number s for analog adapter PHONE 1 n 7 Assigns the phone number s for the analog adapter PHONE 2 amp ZI Displays the phone number including subaddress if any for various B channel protocols amp ZO Displays the amp ZOn setting amp ZOn x Writes own phone number including subaddress if any The number specified is used as the calling party number while dialing Value for n ISDN data A analog adapter PHONE 1 B analog adapter PHONE 2 AT Command Set Reference Reference Guide for the Model XM128 ISDN Digital Modem Table C 4 lists the extended AT command set Table C 4 Extended AT command set Command Options Funct
139. wing is an example of the connect message reported to the DTE The success of bundle connection initiation is indicated by this message CONNECT 460800 X 75M 128K V42b If any B channel is unavailable in any site the bundle initiation falls back to single channel connection The following message may appear in this case CONNECT 460800 X 75 64000 V42b Dialing Prestored Phone Numbers The 40 phone numbers stored in NVRAM can also be used to place a bundle call e ATDSn dials the n 1 th phone number twice for both the bundle connections n 0 to 39 e ATDSn dials the n 1 th phone number for the first connection and dials the n 2 th phone number for the second connection n 0 38 e ATDSn Sm dials the n 1 th phone number for the first connection and the m 1 th phone number for the second connection n 0 39 m 0 39 Invoking V 42bis Data Compression The following AT commands are used to switch the V 42bis data compression on or off for ISDN data calls when using X 75 or V 120 protocols e AT amp K44 enables V 42bis on ISDN call e AT amp KOO disables V 42bis on ISDN call For X 75 to negotiate compression parameters with the remote ISDN terminal you exchange XID frames before the Link Layer is established The calling site sends an XID frame with V 42bis request to the called site If the called site understands the meaning of this XID it replies to an XID frame with a V 42bis request If it is able to execute V
140. x E Connector Pin Assignments This appendix describes the connector pinout assignments for the Model XM128 ISDN Digital Modem The Model XM128 modem features one RJ 45 ISDN connector and two RJ 11 phone connectors The RJ 45 connector labeled ISDN S or ISDN U is for an ISDN line connection S T interface or U interface and the RJ 11 connectors labeled PHONE 1 and PHONE 2 also known as analog adapters in European countries are for an optional connection to analog telephone equipment such as a telephone fax or analog modem RJ 45 Plug and Connector The RJ 45 plug and RJ 45 connector are both illustrated in Figure E 1 12345678 LEE EE 7894FA Figure E 1 RJ 45 plug and RJ 45 connector Connector Pin Assignments E 1 Reference Guide for the Model XM128 ISDN Digital Modem Table E 1 lists the pin assignments for the RJ 45 plug and RJ 45 connector for the S T interface Table E 1 RJ 45 plug and RJ 45 connector pin assignments for the S T interface Pin Assignment Not connected Not connected RCV XMT XMT RCV 48V o o0 AJOJN 48V RTN Table E 2 lists the pin assignments for the RJ 45 plug and RJ 45 connector for the U interface Table E 2 RJ 45 plug and RJ 45 connector pin assignments for the U interface Pin Assignment Not connected Not connected Not connected R
141. y at speeds up to 460 kilobits per second Kbps over ISDN lines Introduction 1 1 Reference Guide for the Model XM128 ISDN Digital Modem The Model XM128 modem has two analog ports to connect analog devices such as fax machines modems and telephones Two different devices can communicate over the two B channels to different locations simultaneously enabling you to send a fax and make a voice call at the same time The analog ports recognize standard dual tone multifrequency DTMF tones as well as pulse dialing The Model XM128 modem has the following features e Plug and Play support for a windows 95 environment e Full compatibility with both ISDN and remote public switched telephone network PSTN by way of ISDN e Multiple signaling protocol compatibility with DSS1 1TR6 NI 1 AT amp T SESS and Northern Telecom DMS 100 network switches e X75 V 110 V 120 and Point to Point Protocol PPP Async to Sync Conversion B Channel Protocol support e B channel speeds of 56 Kbps in band signaling and 64 Kbps out of band signaling e MLP and Multipoint PPP RFC1717 e Hi fn LZS compression STAC e V 42bis data compression using the X 75 V 120 and bundle protocols e NETGEAR ISDN AT modem commands e Automatic ISDN and analog call detection Two analog telephone jacks analog adapters e Push button switch for quick dial and teardown e Easy to use configuration software e Flash EPROM memory for easy firmware upgrades

Netgear XM128 ISDN User's Manual

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