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V.34 Rackmount Modem Card for 2-/4-Wire V.34

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1. BLACK BOX ULL DIESES ES te espe epe es SEPTEMBER 1999 MD1600C MD1601C V 34 Rackmount Modem Card for 2 4 Wire V 34 Rackmount Modem Card for 2 Wire Only Se peg mem mem E sm ee Et Order toll free in the U S 24 hours 7 A M Monday to midnight Friday 877 877 BBOX CUSTOMER SUPPORT FREE technical support 24 hours a day 7 days a week Call 724 746 5500 or fax 724 746 0746 INFORMATION Mail order Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 E mail info blackbox com Web site www blackbox com V 34 RACKMOUNT MODEM CARD FEDERAL COMMUNICATIONS COMMISSION AND INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENTS This equipment generates uses and can radiate radio frequency energy and if not installed and used properly that is in strict accordance with the manufacturer s instructions may cause interference to radio communication It has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart J of Part 15 of FCC rules which are designed to provide reasonable protection against such interference when the equipment is operated in a commercial environment Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required to take whatever measures may be necessary to correct the interference Changes or modifications not expressly approved by the party r
2. 00 0000 cece eee 11 OOS Busy Ott iie rn ce ER 18 Originate mode EE EE e m s 20 OutofService Error OOS ERR 18 21 R Receive Data RGV isole deis 2 Redundant Power Supp 12 Reliable amp E2 amp W0 mode 13 Remote Escape Configuration 4 50 Result Codes 0 ccc ccc cece etn cence ence 11 57 59 Ring Indicator Rl esee os 21 RS 232 Cables ee ae 13 RS 232C V 24 interface oooooooomom s 12 RES GMS i in a a 29 S Repister iill l sse y ber eb hs ee bend xs 11 51 60 Serial cable ose e iio 12 Serial Communications Controller 23 System AA tese cadet dee ds 10 11 V 34 RACKMOUNT MODEM CARD T Terminal Emulation 31 Test default seng 18 TEST OOS Berg jumper 000000000 13 Transmit Data GM 21 U BART n me arbi a ht end ecu pola saree El ae kt 23 24 26 30 32 33 UNIX patch flens iaa 10 UUCP Spooftng esas ke repe Ret 11 V V 42 error correction ooooooomom m 33 V 42bis 4 to 1 data compression s s s soss 10 W Windows 3 Livia te kes ua RR as 26 Windows 95 and O cre 26 WINDOWS SYSTEM directory oooooccocomoo 27 X XON XOBE pet eS Sneed ees 29 Z Zilog 28530 chop scelere s 23 NOTES
3. COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT SBn n speed SB115200 bps SB300 selects 300 bps at serial port SB1200 selects 1200 bps at serial port SB2400 selects 2400 bps at serial port SB4800 selects 4800 bps at serial port SB9600 selects 9600 bps at serial port SB19200 selects 19 200 bps at serial port SB38400 selects 38 400 bps at serial port SB57600 selects 57600 bps at serial port SB115200 selects 115200 bps at serial port SPn n 0orl SPO SPO disables UUCP spoofing SP1 enables UUCP spoofing amp SFn n 0orl amp SFO amp SFO selects DSR follows CD amp SF1 selects DSR independent amp Sn n 20 1or2 amp S1 amp SO0 forces Data Set Ready on amp S1 lets Data Set Ready act normally amp S2 Data Set Ready drop is regulated by S24 on disconnect T n a Tone Dial Modem will tone dial numbers following the T amp Tn n 4or5 amp T5 V 34 RACKMOUNT MODEM CARD DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION amp T4 selects Enable Response to Request for Remote Digital Loopback amp T5 selects Disable Response to Request for Remote Digital Loopback In n 0
4. Y Wrap at end of line Y Map backspace to H Y ver strike backspace v Wrap Back space Strip LF Figure 4 4 A sample terminal emulation setup screen 4 6 3 FILE TRANSFER PROTOCOLS When you unload or download files with your modem the host computer will ask which file transfer protocol you want to use Most communications programs allow you to choose a default protocol Your software s documentation should list the ones it can use not all communications programs support all protocols We V 34 RACKMOUNT MODEM CARD recommend Zmodem for most transfers Here s a sample file transfer protocols screen File Transfer Protocols Select Protocol ASCII XModem XModem CRC XModem 1K YModem YModem G B ZModem Settings Kermit CompuServe B Figure 4 5 A sample file transfer protocols screen 4 7 When to Disable Data Compression If your serial port cannot keep up because it has an older UART you may lose data when using data compression Also the speed advantage hardware compression gives you is entirely dependent on how much the data being transmitted can be compressed If the data is already in a compressed form a ZIP or SIT file for example trying to compress it more will actually slow the transmission slightly compared to transmitting the same file with compression disabled This effect will be most noticeable if your modem negotiates MNP 5 compression with the other modem V 42bis will not try to
5. L3 selects no detection phase go directly to LAP M mode LLn n 0orl LLO LLO leased line handshake LLI V 34 leased line handshake lt Bn n speed MB33600 bps MB75 selects CCITT V 23 mode MB300 selects 300 bps on line MB1200 selects 1200 bps on line MB2400 selects 2400 bps on line V 34 RACKMOUNT MODEM CARD COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION MB4800 selects 4800 bps on line MB9600 selects 9600 bps on line MB 14400 selects 14400 bps on line MB19200 selects 19200 bps on line MB28800 selects 28800 bps on line MB33600 selects 33600 bps on line Nd d 0 through 9 n a Dial stored telephone number d Do not include the letter D in this command NdNe d 0 through 9 e any other number 0 through 9 n a Number Linking If first number dialed is busy another stored number may be automatically dialed In example stored number d is dialed and if busy stored number e is dialed O n a n a Exit Command Mode and go into Online Mode P n a Tone Dial Modem will pulse dial numbers following the P amp Pn n 0orl amp PO amp PO selects 60 40 pulse ratio amp P1 selects 67 33 pulse ratio Qn n 0 lor2 OU OU sel
6. V 21 980 Hz Mark 1180 Hz Space for Transmit Originate 1650 Hz Mark 1850 Hz Space for Transmit Answer 1650 Hz Mark 1850 Hz Space for Receive Originate 980 Hz Mark 1180 Hz Space for Receive Answer V 23 390 Hz Mark 450 Hz Space for Transmit Originate 1300 Hz Mark 2100 Hz Space for Transmit Answer 1300 Hz Mark 450 Hz Space for Receive Answer Transmit Level MD1600C 10 dBm dialup 9 dBm leased line MD1601C 11 dBm dialup 15 dB leased line dBm level selectable with DIP Switch 3 in leased line setting Frequency Stability 0 01 Receiver Sensitivity 43 dBm under worst case conditions AGC Dynamic Range 43 dB Interface EIA RS 232C ITU V 24 V 34 RACKMOUNT MODEM CARD Connectors on Modem Rack RM1600 1 DB25 RS 232C 1 RJ 11 for phone line per Modem on Modem Rack RM1600 Diagnostics Power on Self Test Local Analog Loop Local Digital Loop Remote Digital Loop Back to Back Test Indicators LEDs for Transmit Data Receive Data Carrier Detect Speed Indicators Off Hook Terminal Ready Ring Indicator and Out of Service Busy Controls Toggle switches for Out of Service OOS Power On Off On board DIP switches and jumpers for various modem options Operating Temperature 32 to 120 F 0 to 50 C Power Requirements 115 VAC 60 Hz 0 3 Amp 240 VAC 50 Hz optional Power Consumption Approximately 6 watts Size 10 5 L x 5 5 W 26 7 x 13 9 cm Weigh
7. Description Counts the number of rings that have occurred ASCII Character 0 127 43 sign Defines the escape code character ASCII Character 0 127 13 Defines the character recognized as Carriage Return RETURN or Enter ASCII Character 0 127 10 Defines the character recognized as LINE FEED ASCII Character 0 127 8 Defines the character recognized as BACKSPACE 1 second 2 255 4 255 9 Ape Sets the time the modem waits after the RETURN key is pressed before executing a dial command Value for international units only V 34 RACKMOUNT MODEM CARD S7 Time for Carrier Abort Timer Unit 1 second Range 1 255 1 45 Default 45 Description Defines the Abort Timer lack of carrier delay time S8 Pause Time for Comma Unit 1 second Range 0 255 4 255 Default 2 4 Description Sets the length of the pause caused by a comma inserted in a dialing command S9 Carrier Detect Response Time Unit 100 milliseconds Range 1 255 Default 6 Description Sets the time delay for when the modem first detects a valid incoming carrier signal and when the modem turns on its Carrier Detect circuit S10 Carrier Loss Disconnect Delay Time Unit 100 milliseconds Range 0 255 Default 7 Description Sets the time a carrier signal must be lost before the modem disconnects S11 Tone Dialing Tone Spacing and Duration Unit 1 milliseconds Range 1 255 80 255 De
8. it switches between several programs running at the same time it can make the serial port wait briefly while Windows performs other tasks Meanwhile incoming data can be lost The older 8250A and 16450 UARTs can store data in a one byte first in first out FIFO buffer a memory area in the UART in which the first bit in is the first bit out but once the buffer is full the data is lost The 16550 has a 16 byte FIFO buffer which accounts for much of its high speed However in Windows 3 1 the 16550 s FIFO buffer is disabled by default To enable the buffer use Notepad to open the SYSTEM INI file in your Windows directory and add the following line to the 386Enh section COMnFIFO 1 where n is the number of the COM port the 16550 is installed on For example if the 16550 is installed on COM2 the line should be COM2FIFO 1 After you save SYSTEM INI you must restart Windows for the change to take effect However there is another problem when the FIFO buffer is enabled Windows cannot recognize the COM port because of a bug in the Windows 3 1 serial port driver COMM DRV Windows 95 and 98 do not have this problem The only way around the problem is to replace the COMM DRV file in the WINDOWS SYSTEM V 34 RACKMOUNT MODEM CARD directory with another driver Several drivers that will solve this problem are available commercially or on BBSs A freeware driver called CyberCom is available as CYBERC ZIP on CompuServe in the IBM
9. 3 1 Before You Begin EEN EEN Rh ee 12 S L Card Cage cec eR ESPERE 12 39 1 2 Serial Gables iu oerte ticas mi org wen S e S eee hae 12 3 1 3 Telephone Lint i e pho b eR Rea 12 32 Installation zoo o PIE INIMA Tu itt aa 12 3 3 PG Board Controls scissa a S 13 3 8 1 DIP Switch Settings ccoo sccis runcis ke h 14 3 4 OOS Busy Out Toggle Switch s seese ecr mees serene 18 3 4 1 Out of Service Test Jumper 0 0 0 6 eee eee 18 3 5 Dial Up and Leased Lines eese e RR 19 3 6 Modem LED Indicators 0 0 0 cee eee eee 20 4 Software Configuration 0 ccc n 23 4 1 Introduction os ssc R a ERES 23 4 2 Serial Port Limitations essre e em srin iaa ES 23 4 2 1 How Can You Identify Your UART Type 24 4 2 2 The 16550 UART and Windows 3 1 26 4 3 Configuring Your Software esses rh s 27 4 3 1 Configuring Software for Your Modem 27 4 4 PC Initialization Strings illie 27 4 4 1 Changing Default Parameters 0 00000 eee 29 4 5 Macintosh Initialization 0 0 ee eee 29 4 6 Configuring Software for Your Computer 29 4 6 1 Configuring Software for the Remote SysteM 30 4 6 2 Terminal Emulation 0 0 000 Al 4 6 3 File Transfer Protocols ooooooooommoooooooo 9l 4 7 When to Disable Data Compression e 32 4 7 1 Disabling Error Correction e 88 V 34 RACKMOUNT MODEM CARD 5 Modem Commands S Registers and Result Codes 34 5 1 Modem
10. CONNECT 14400 19 CONNECT 19200 21 CONNECT 21600 24 CONNECT 24000 26 CONNECT 26400 28 CONNECT 28800 31 CONNECT 31200 33 CONNECT 33600 With MNP error correction on RELIABLE or R is added to these result codes With LAP M error correction on LAP M or L is added to these result codes With data compression on COMPRESSED or C is added Note these Extended Result Codes are displayed when your modem is set up to do so with an X1 X2 X3 or X4 command V 34 RACKMOUNT MODEM CARD Table 5 3 amp Q1 Standard AT Result Codes Terse Verbose TERSE VERBOSE 0 OK 1 CONNECT 2 RING 3 NO CARRIER 4 ERROR 5 CONNECT 1200 6 NO DIAL TONE 7 BUSY 8 NO ANSWER 10 CONNECT 2400 11 CONNECT 4800 12 CONNECT 9600 13 CONNECT 14400 19 CONNECT 19200 21 CONNECT 21600 24 CONNECT 24000 26 CONNECT 26400 28 CONNECT 28800 31 CONNECT 31200 33 CONNECT 33600 Error Correction Data Compressed modifiers are not displayed with Standard AT Result Codes 5 3 1 AT COMMANDS AND S REGISTER SUMMARY The vast majority of installations are similar with the V 34 Rackmount Modem Card being used to dial up a remote installation where the call is automatically answered Your V 34 Rackmount Modem Card has a default configuration to dial another 33 600 bps modem that supports error correction data compression and flow control If the answering modem is not compatible the V 34 Rackmount Modem Card can match protocols provide
11. MD1600C and 11 dB for the MD1601C To connect the modem to the phone lines plug one end of the RJ 11 cable that is provided with the modem into the corresponding RJ 11 connector located on the back plane of the modem rack and the other end into the phone company provided RJ 11 or RJ 11W modular phone jack Make sure that DIP Switch 10 is in the UP position default when in dial up mode Although the majority of installations involves dial up lines the modem also connects to leased lines sometimes referred to as dedicated private or 3002 lines The MD1600C connects to either 2 or 4 wire leased lines the MD1601C connects to 2 wire leased lines only To connect the modem to leased lines first determine the type of line termination provided by the phone company Most phone companies provide a terminal block with a pair of screws Some provide a conventional RJ 11 type of connector If the RJ 11 connector is used you can use the same cable that you use for dial up connection If the screw terminal connector is used you may need a special cable call for technical support Make two DIP switch setting changes on the modem s PC board First place DIP Switch 10 in the DOWN position changes the modem from dial up to leased line operation Second set one of the two modems on the leased line circuit to originate and the other to answer To do this change the setting of DIP Switch 5 When you changed the DIP Switch 10 se
12. Older Macintosh computers the Macintosh SE through IIfx use a Zilog Z8530 chip called a Serial Communications Controller or SCC that has a maximum speed of 57 600 bps This speed can be compromised by other serial communications including printer transmissions and AppleTalk the networking software that allows Macintosh computers to share files When AppleTalk is active it controls all serial communications on the Macintosh Because AppleTalk gives priority to network communications an older Macintosh may lose modem data at higher transmission speeds Therefore when AppleTalk is active you risk losing data on serial port V 34 RACKMOUNT MODEM CARD communications over 2400 bps though most users can work at up to 9600 bps without problems Other activities that could cause the serial driver to drop bits at high speeds include the floppy disk driver formatting a disk the CPU paging in or out in virtual memory mode and the Mac IIci or IIsi running the on board video in 8 bit mode So for maximum communications speed on older Macintosh computers we recommend as few concurrent activities as possible To use V 42bis compression at 19 200 bps or faster we recommend that you install a high speed serial port card Recent Macintosh computers such as PowerMac Quadra and Centris models support speeds up to 115 200 bps 4 2 1 How Can You IDENTIFY YOUR UART TYPE If you have MS DOS 6 0 or later you can find your UART at the DOS prom
13. as appropriate V 34 RACKMOUNT MODEM CARD Index 14 400 bps 14 4 LED oo oooomooom o ooo 21 2400 bps 24 LED 21 28 800 bps 28 8 LED sesse do kerida rirse ensa 21 A Analog and Digital Loopback testing 11 ANSWER MOG Es rr ae PEE 20 A Vieng Saree ERREG ep DPA es Rd e Rd 27 34 AT COMA EEN 13 34 ATDP cui a da 29 ADD ere Rt dd iia bss sb 29 ATL5 ATL7 Command eese 13 Automatic fallback o o 10 B o b wees cise erie ee C Led erri 14 Busy signal cuore ES 10 C Carrier Detect GD 235 2e teotkh eR RR RES 21 Command mode screen AE EE 14 Communications software 27 Cyber om corrio ee x rhe Roue Rn 27 D Data Terminal Ready DIR 21 Dial ROMS ds si sae 10 Dial up phone lines EE eR 13 Digital Loopback Test 62 64 66 DIP Switch ces ad 14 17 20 E EIA TR 29 Class 2 fax commands 11 Enhanced V 34 V 32terbo V 32b1S 10 Escape Sequence iere RR a ris 64 F Fulkd plex srt a os 10 V 34 RACKMOUNT MODEM CARD IBM AS A00T rn 10 11 IFU T VAS LAP M enum oy bv eod eee 10 L eased dines s es EA E a EE 13 20 Local Analog Loopback Test 61 65 M MNP Classes 3 and Ze NENNEN NEEN be 10 Mode Indicate Mode Indicate Common Interface 19 Modem baud rate commande 17 Modem Rack with Power Supply 12 N Normal amp E0 amp W0 mode 13 0 OR HOook O LL s sos radares cos RAS 21 On screen help menus
14. or 19 200 21 600 24 000 26 400 28 800 31 200 33 600 bps Compatibility CCITT V 42bis V 42 ITU V 34 ITU V 34 AT amp T V 32 terbo CCITT V 32bis V 32 V 21 V 22bis V 22 V 23 V 25bis Bell 212A and 103 113 CCITT V 17 Group 3 T 4 T 30 and EIA TR 29 Class 2 V 21 V 23 international models only Error Correction V 42 LAP M or MNP 3 and 4 error correction Data Compression V 42bis 4 1 throughput or MNP 5 2 1 throughput data compression Speed Conversion Serial port data rates adjustable to 300 1200 2400 4800 9600 19 200 38 400 57 600 and 115 200 bps Flow Control Options X ON X OFF Hardware RTS CTS ENQ ACK Unix to Unix Copy Protocol UUCP Spoofing Mode of Operation MD1600C Full duplex over both dialup lines and 2 or 4 wire leased lines automatic or manual dialing automatic or manual answer MD1601C Full duplex over both dialup lines and 2 wire leased lines automatic or manual dialing automatic or manual answer Leased Line Restoral When in dial backup mode modem attempts leased line restoral periodically controlled by S Register S18 setting Intelligent Features Fully AT Command compatible microprocessor controlled remote configuration EIA extended Automode adaptive line probing automatic symbol rate and carrier frequency during start up retrain and rate renegotiation autodial redial tones dial pauses call status display automatic parity and data rate s
15. Communications Forum Library 0 CyberCom will enable Windows communications at speeds up to 115 200 bps if you have a 16550 UART installed 4 3 Configuring Your Software Communications software must be configured to work with your modem your computer and the remote system it is calling Fortunately most communications programs make the process easy by providing a default initialization string for your modem as well as defaults for most of the other required parameters 4 3 1 CONFIGURING SOFTWARE FOR YOUR MODEM Because remote computers may have different connection requirements such as speed number of bits parity sessions each session Most communications programs however have a separate modem configuration menu because modem configurations rarely change from session to session The most important configuration is the modem initialization string This is a sequence of commands the software uses to configure the modem when the communications software is loaded or when a session begins Always begin the initialization string with the ATtention AT then follow it with the modem reset amp F Issuing a reset command before other commands ensures that you are starting with a known state The rest of the commands in the initialization string depend on the capabilities of the modem and what you want it to do Some older communications programs require you to create the initialization string by yourself Most modem communi cations programs
16. The V 34 Rackmount Modem Card contains a two position OOS switch on the front panel This switch can be used to create a busy out OOS condition for the modem take the modem off hook To place a modem in the Busy condition move the OOS toggle switch to the BUSY position The modem then goes off hook its OOS and OH LEDs light and incoming calls to this modem get a busy signal If you suspect a problem with a particular modem you can use the BUSY switch to have an optional device such as a hunt group that looks for a non busy line to perform a roll over to the next available modem while you check the status of the Busy modem 3 4 1 OUT OF SERVICE TEST JUMPER When the V 34 Rackmount Modem Card is Out Of Service OOS it is busy to incoming calls In the Test default setting the modem drives pin 25 high when the modem is in Test mode In the OOS optional setting the computer or terminal forces pin 25 high and puts the modem in a busy condition Test Setting OOS Setting Default Setting Optional Setting Figure 3 2 Test and OOS Jumper Settings V 34 RACKMOUNT MODEM CARD 3 5 Dial Up and Leased Lines Connection to the phone system is made via RJ 11 type jacks such as an RJ 11C or RJ 11W The modem can also be connected to an RJ 41 or an RJ 45S jack but would not use these jack s dB level programming features The V 34 Rackmount Modem Card is designed to transmit at a permissive level of 10dB for the
17. however provide you with a ready made initialization string that is automatically selected when you choose your modem model from a list It is a poor idea to use an initialization string intended for another modem especially one from another manufacturer because modem capabilities and command implementations vary from modem to modem 4 4 PC Initialization Strings We recommend the following initialization string for a V 34 Rackmount Modem Card connected to a PC compatible computer AT amp F X4 S0 0 M V 34 RACKMOUNT MODEM CARD This string resets the V 34 Rackmount Modem Card to the factory default settings selects extended result codes NO DIAL TONE and BUSY and turns off auto answer M must end every string sent to the modem from software It is the ASCII code for the RETURN key on most keyboards and the default code for the carriage return character in the Modem and most communications programs The carriage return character is defined in the Modem in S register S3 if you change it you must also change the carriage return character code used in your communi cations software If you send a command directly to the modem in terminal mode rather than indirectly through communications software you must end the command string by pressing the RETURN key CR instead of adding M to the string Modem Setup Modem type Dial Prefix ATDT Ring Message Dial Suffix Hangup string ATHO M Modem Com
18. seconds Default 0 Description Sets the time between DTR inactive low and the modem going off hook The DTR Busy out feature is disabled with S36 0 S37 Time Between DTR Active and Modem On Hook Unit 1 second Range 0 255 seconds Default 5 Description Sets the time between DTR being active and the modem going on hook not busy V 34 RACKMOUNT MODEM CARD S48 Program V34 Connect Speeds Unit N A Range 33 31 28 26 24 21 19 16 14 12 96 and 48 Default 0 Description Defines which speed modem connects within Enhanced V 34 mode scope e g S48 21 means maximum connect speed is 21 6K This register is useful when line conditions will not support higher Enhanced V 34 speeds e g 33 6K 31 2K 28K 26 4K 24K The modem default is a value of 0 which indicates a connection attempt of 33 6K 5 3 Result Codes The V 34 Rackmount Modem Card Command mode provides you with several responses or Result Codes that can aid you in Command mode operation These Result Codes are displayed on your video monitor AT8Q0 selects CONNECT 2400 is 9 AT amp OI selects CONNECT 2400 is 10 The following tables list result codes generated by the amp Q command V 34 RACKMOUNT MODEM CARD Table 5 2 amp Q0 Result Codes Terse Verbose 0 OK i CONNECT 2 RING 3 NO CARRIER 4 ERROR 5 CONNECT 1200 NO DIALTONE 7 BUSY 8 NO ANSWER 9 CONNECT 2400 11 CONNECT 4800 12 CONNECT 9600 13
19. turns on CCITT 1800 Hz guard tone Not used in International models Hn n 0orl n a HO selects Hang Up go on hook HI selects Go Hn n 1 through 3 Read Only Command H1 brings up Help Screen 1 H2 brings up Help Screen 2 H3 brings up Help Screen 3 In n 0 1 or2 Read Only Command I0 requests modem ID I requests firmware revision I2 for internal use I9 N A V 34 RACKMOUNT MODEM CARD DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION Read Only Command The I9 command is a query to display this modem s characteristics when operating within Windows 95 Entering ATI9 lt cr gt invokes BLR 28800 FAX CT on your video monitor The response to the query reveals that your modem is a BLR 28 8K FAX and Class Two capable device IL 5 6 7 8 9 10 and 11 Read Only Command Lists all stored telephone numbers in memory L5 lists all current operating parameters L6 lists all current S Register values L7 lists additional parameters L8 lists current on line diagnostics L9 displays Signal Strength Information L10 displays Signal to Noise Ratio Information L11 displays Noise Information Ln n 0 through 3 L0 LO selects modems negotiate V 42 Mode L1 selects MNP on and LAP M off L2 selects LAP M on and MNP off
20. using the Remote Configuration features are the same whether or not a call originates from the remote modem Once the modem is on line perform the procedures in Table 5 1 Step 1 Table 5 1 Remote Configuration Procedure Remote Escape Configuration requires lt CR gt to be sent if the default value in S Register S13 has not been changed The modem responds with 1 DATA Mode 2 COMMAND Mode You then select 1 or 2 With 1 the modem goes back into data mode and with 2 the modem responds with the following Password gt Enter your Set up Password and if the code is correct the modem responds with OK You can now use any AT commands of the modem being remotely configured as if they were being entered locally You cannot change the setup of the LOGIN Password until you enter the proper LOGIN Password When you are done entering AT commands and you want to exit type ATO and hit return The modem responds with 1 DATA Mode 2 COMMAND Mode Enter a 1 to go back on line with your computer or enter 2 and the correct password to talk to your modem V 34 RACKMOUNT MODEM CARD Password Commands COMMAND TIXXXXXXXXXX VALUES n a DEFAULT Iblackbox DESCRIPTION Login Password is any keyboard characters x case sensitive minimum 6 and maximum 10 characters The default Login Password is blackbox all one word all lowercase letters COMMAND Syyyyyyyyyy VALUES n a DEFA
21. 0 through 3 amp D2 amp D0 means DTR is ignored amp D1 means modem returns to command mode amp D2 lets modem react to DTR normally amp D3 causes modem to reset to modem default parameters Dn n 0orl DO D0 disables DTR Dialing D1 enables DTR Dialing DF n 0orl DFO DFO selects V 34 Line Probe Data in Graph Format DF1 selects V 34 Line Probe Data in Table Format DP n 0orl DPO DPO0 Do not read Line Probe information from DSP during handshaking DP1 Read Line Probe Information from DSP during handshaking En n 0orl El EO selects do not echo Command mode characters El selects do echo Command mode characters EBn n 0orl EBO EBO enables 10 bit mode EBI enables 11 bit mode V 34 RACKMOUNT MODEM CARD COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT amp En n 0 through 15 SEI amp E4 amp E6 amp E10 amp E13 SEIN amp E O selects no error correction amp E1 selects V 42 Auto reliable Mode amp E2 selects V 42 Reliable Mode amp E3 selects no modem initiated flow control amp E4 selects CTS modem initiated flow control amp E5 selects XON XOFF modem initiated flow control amp E6 selects XON XOFF not passed through amp E7 selects XON XOFF passed through amp E8 selects Enq Ack pacing off amp E9 selects Enq Ack pacing on amp
22. AT Commands 0 000 cece A4 5 1 1 Callback Security Commande 47 5 1 2 V 25bis Commands 48 5 1 3 Remote Configuration sss ssssssssiincediricsi Esrari ik 49 5 1 4 Remote Configuration Drocedures 50 5 2 S RegisterSe ossa ease a EG ERROR Rar ER EPOR 51 5 3 Result Codes oo ooooooomororororrrrrornor oso hs 57 5 3 1 AT Commands and S Register Summary oo ooooo oo o 59 6 Testing Your Modem EEN RR e b Rn 61 6 1 Local Analog Loopback Test V 54 Loop 61 6 2 Digital Loopback Test V 54 Loop 2 Local Manual 62 6 3 Digital Loopback Test V 54 Loop 2 Remote Automatic 63 6 4 Local Analog Loopback Test Synchronous Mode 65 6 5 Digital Loopback Test Local Manual Synchronous Mode 65 6 6 Digital Loopback Test Remote Automatic Synchronous Mode isses eb Re x ee ed 66 7 Service and Tech Support 99 ENN ve e eR RR 67 Appendix Regulatory Information sse 68 dex ri HR bade AR A Ru UR Edi ade 72 V 34 RACKMOUNT MODEM CARD 1 Specifications Data Rates Modem 33 600 31 200 28 800 26 400 24 000 21 600 19 200 16 800 14 400 12 000 9600 7200 4800 2400 1200 0 300 bps Data Rates Fax 14 400 12 000 9600 7200 4800 2400 1200 300 bps Data Format Serial binary asynchronous at 0 300 1200 2400 4800 7200 9600 14 400 16 800 or 19 200 21 600 24 000 26 400 28 800 31 200 33 600 bps synchronous at 1200 2400 4800 9600 14 400 16 800
23. E10 selects Normal Mode flow control off amp E11 selects Normal Mode flow control on amp E12 selects Pacing off amp E13 selects Pacing on amp E14 selects data compression disabled amp E15 selects data compression enabled En n 0 through 5 GEI EO Modem won t escape PELI Method default setting E2 Break Method E3 Either or Break Method E4 No OK Response to E5 OK Response to Fn n 0 through 2 F2 F0 means no fall back when on line F1 means fall back from 33600 to 4800 bps when on line increments of 2400 bps F2 means fall back to 4800 bps from 33 6 Kbps fall forward if line improves increments of 2400 bps amp Fn n 0 80r9 amp F8 V 34 RACKMOUNT MODEM CARD DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES amp F loads factory default values from ROM amp F8 reads factory default values when amp F is issued amp F9 reads parameters stored in nonvolatile memory when amp F is issued Fn n 0orl Mm F0 means do not fall back to normal connect if CR received F1 means fall back to normal connect if CR received amp Gn n 0 lor2 amp G0 amp GO turns off CCITT guard tone amp G1 turns on CCITT 550 Hz guard tone amp G2
24. Modem Card set to auto reliable mode amp E1 However you may encounter some circumstances in which the V 34 Rackmount Modem Card will work better with error correction turned off For example on CompuServe error correction will slow file transfers at modem speeds of 9600 bps and under If this is a problem for you you can turn off error correction with the command AT SEO or you can include the command in your initialization string as follows AT amp F S0 0 X4 amp EO0 M 5 Modem Commands S Registers and Result Codes 5 1 Modem AT Commands AT commands are the means by which you and your communications software are able to communicate with and configure your modem They enable you to establish read and modify parameters in addition to dialing The following provides a summary and brief explanation of the AT commands recognized by the V 34 Rackmount Modem Card COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION AT n a n a Attention Code that precedes most command strings except A A and Escape Codes Return n a n a Pressing RETURN key executes most commands A n a n a Answer call even if no ring present n a n a This symbol placed in dialing string enables the modem to detect AT amp T s call card t
25. ULT SMODEMSETUP DESCRIPTION Setup password is any keyboard characters y case sensitive minimum 6 and maximum 10 characters The default setup password is MODEMSETUP 5 2 S Registers Certain Command Mode configurations are stored in memory registers called S Registers The S command is used to assign a value to and to read the current value of an S Register To assign a value to an S Register enter the letter S followed by the S Register number and an equals sign and then a decimal response to the message ENTER THE NEW VALUE IN DECIMAL FORMAT To read an S Register value enter the letter S followed by the S Register number and a question mark then hit RETURN To verify that the S Register value was entered correctly enter for example ATS8 and hit RETURN You should receive a response of the assigned value given to that S Register SO Number of Rings Until Modem Answers Unit 1 ring Range 0 255 Default 1 Description Sets the number of rings before the modem answers SI Rings Which Have Occurred Unit lring Range 0 255 Default 0 V 34 RACKMOUNT MODEM CARD Description S2 Escape Code Character Unit Range Default Description S3 Return Character Unit Range Default Description S4 Line Feed Character Unit Range Default Description S5 Backspace Character Unit Range Default Description S6 Wait Time for Dial Tone Unit Range Default
26. VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION amp BSn n 0orl amp BS1 amp BSO selects maximum transmit block size of 64 characters amp BSI selects maximum transmit block size of 256 characters MNP mode 128 characters LAP M mode BAn n 0orl BAO BAO selects speed conversion on BAI selects speed conversion off amp Cn n 0 1 20r4 amp Cl amp CO forces Carrier Detect on amp C1 lets Carrier Detect act normally amp C2 lets Carrier Detect drop S24 time on disconnect amp C4 resets modem when Carrier Detect drops amp CDn n 0orl amp CDO amp CD0 Execute cleardown on disconnect amp CD1 Do not execute cleardown on disconnect Ds s phone n a Dial a telephone number s where s may include up to 60 digits or T P R comma and semicolon characters DsNd s phone and d 0 through 9 n a Store telephone number To store phone number s is entered and followed by N and then Directory Number q V 34 RACKMOUNT MODEM CARD COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION amp Dn n
27. alling d REN Ringer Equivalence Number The REN value of a unit is calculated from 3 n where n is the total number of units that can be connected in parallel that will still cause the standard bell as defined in BS6305 Appendix D to ring REN values of less than 0 3 cannot be assigned REN 1 If a telephone or other device is connected in parallel with the modem the combined REN must not exceed 4 A BT supplied telephone may be assumed to have REN of 1 0 unless otherwise noted V 34 RACKMOUNT MODEM CARD The approval of this modem for connection to the British Telecom public switched telephone network is INVALIDATED if the apparatus is subject to any modification in any material way not authorized by BABT or if it is used with or connected to i internal software that has not been formally accepted by BABT ii external control software or external control apparatus which cause the operation of the modem associated call setup equipment to contravene the requirements of the standard set out in BABT SITS 82 005S D All other apparatus connected to this modem and thereby connected directly or indirectly to the British Telecom public switched telephone network must be approved apparatus as defined in Section 22 of the British Telecommunications Act 1984 The REN number for this apparatus 1 Compliance with BS6789 Section 3 1 and Part 2 a The modem is not capable of allowing Auto Call using 999 or other PABX emer
28. ave an 8250 UART your most reliable serial port speed will be 9600 bps if you have an 8250A or 16450 UART try 19 200 bps if you have a 16550 or more advanced UART a serial port setting of 115 200 bps can be set reliably 4 6 1 CONFIGURING SOFTWARE FOR THE REMOTE SYSTEM You must meet the requirements of the remote system for successful communications Though the V 34 Rackmount Modem Card can automatically synchronize with the speed of the other modem you must specify parameters such as type of flow control break length number of data bits number of stop bits and parity If you set these parameters incorrectly with the remote system gibberish will appear on your screen V 34 RACKMOUNT MODEM CARD 4 6 2 TERMINAL EMULATION If you are accessing the remote computer as if from an on site terminal the keyboard codes used by your computer may not match the ones used by the remote computer To be compatible with the remote computer your software must be able to substitute the appropriate codes in what is known as terminal emulation Most communications programs can emulate the most common mainframe terminals including the DEC VT100 VT102 and VT52 terminals and the basic TTY mode If in doubt about which to choose for a BBS try ANSI or VT100 first Here s a sample terminal emulation screen Terminal emulation setup Columns Lines em 132 24 125 Tab Stops Emulation Local Echo Follow cursor Map CR to CR LF
29. board For this test typing multiple upper case U characters is a good way to send an alternating test pattern of ones and zeros The data received by the remote modem will enter its analog receiver be converted to digital data be reconverted into analog and then looped through its transmitter back to the local modem Your modem passes this test if the data entered from the local keyboard is the same as the data received on your monitor V 34 RACKMOUNT MODEM CARD 6 4 Local Analog Loopback Test Synchronous Mode To initiate the Local Analog Loopback Test with the modem in Synchronous mode 1 Enter AT amp MIU This first switches your modem from asynchronous to synchronous mode and places it into the Analog Loopback Originate mode The modem is now out of the Command mode and in the pseudo On Line mode 2 Once you receive a connect message if responses are enabled enter data from your keyboard For this test typing multiple upper case U characters is a good way to send an alternating test pattern of ones and zeros 3 For a more complete test you should also test the modem in Answer mode To do this pull out and then reinsert modem card in rack cage Then type AT amp MIUI and hit ENTER to place the modem in Analog Loopback mode in the Answer mode Then repeat step 2 Computer or Terminal Local V 34 Rackmount Modem Card UUUUU UUUUU Digital Analog Answ Orig Switch toggled to Orig Position o
30. cape Sequence AT lt CR gt or lt BREAK gt AT lt CR gt which brings your modem into Command mode while still maintaining the pseudo On Line mode with the remote modem V 34 RACKMOUNT MODEM CARD 4 Type ATU3 from the local PC and hit ENTER Once you receive an OK message from your modem if responses are enabled the local modem is placed in Digital Loopback mode 5 Data is typed from the remote keyboard For this test typing multiple upper case U characters is a good way to send an alternating test pattern of ones and zeros The data received by the local modem will enter its analog receiver be converted to digital data be reconverted into analog and then looped through its transmitter back to the remote modem Your modem passes this test if the data entered from the remote keyboard is the same as the data received on the remote monitor i Local V 34 Remote V 34 A Computer or Terminal Rackmount Rackmount Computer or Terminal Modem Card Modem Card UUUUU UUUUU Digital Analog Analog Digital Type AT in Terminal mode hit ENTER dial remote modem establish On line mode enter escape sequence type ATU3 and hit ENTER Figure 6 2 Digital Loopback Test local manual 6 When testing is complete you may end the test by typing an Escape Sequence AT lt CR gt or lt BREAK gt AT lt CR gt to bring your modem into Command mode The modem should respond with an OK message If you wish to stay on line w
31. cted to the modem s COM port type the initialization string in the terminal window substituting a carriage return for M To store the string enter AT amp F9 amp WO0 CR Now you can initialize your modem with the following simple string ATZ M 4 6 Configuring Software for Your Computer You must configure your communications software to match your computer s configuration If the Modem is connected to the COM serial port you must tell the software you are using COM2 Another important parameter is the serial port baud rate This is the speed at which your modem communicates with your computer not the speed at which your modem communicates with another modem When V 42bis data compression is enabled a serial port baud rate four times the transmission speed of the modem will optimize data compression So if V 34 RACKMOUNT MODEM CARD your UART is fast enough you should set the serial port to as close as you can to four times the top speed of your modem Communication Parameters Device Baud Stop Bits Data Bits COM1 38400 61 O15 O5 O6 COM2 57600 2 7 8 COM3 115000 O O e Flow Control Break length Parity NONE 50 O None O Odd O Even CTS RTS 100 Mark Space XON XOFF 200 O O sp r Current modem type V 34 Rackmount Modem Card Modem List Intel 9600 EX Manual Modem Microcom QX AX MT2834BA V 34 Rackmount Modem Card Figure 4 3 A sample configuration parameters screen If you h
32. d the protocols are industry standard i e ITU T AT amp T or Bell and not proprietary V 34 RACKMOUNT MODEM CARD The amp W command used in conjunction with specific other AT commands and S Registers can reconfigure the V 34 Rackmount Modem Card to conform to a specific application The V 34 Rackmount Modem Card can store its configuration parameters and S Register values in its nonvolatile memory The command AT amp WO or AT amp W causes the modem to store its current parameters in its nonvolatile RAM The command also sets the modem upon power up or when it is reset with an ATZ command the modem reads all its configuration and S Register parameters from RAM and not from the factory settings in ROM note you may recall factory installed defaults by entering AT amp F8 amp W0 The amp W command changes the configuration parameters stored in RAM that you specifically intend to alter All other default parameters remain unchanged The AT amp W1 command sets the modem so that it does not store its parameters in RAM and on power up or when an ATZ command is issued parameters are read from the factory default settings in ROM Before using the amp W command you may want to view the modem s current operating parameters Use the ATL5 ATL6 and ATL7 commands to display the current modem configuration V 34 RACKMOUNT MODEM CARD 6 Testing Your Modem 6 1 Local Analog Loopback Test V 54 Loop 3 In this test data fr
33. dem rack and the other end into the phone company provided R 11 or RJ 11W modular phone jack 3 2 Installation Follow the steps listed below to install Modem Cards into the Modem Rack 1 Make sure that the power cord is unplugged before installing Modem Cards The Power Supply included with the Modem Rack is already installed in the far right slot in the Rack when shipped from the factory 2 Slide a Modem Card into one of the sixteen available modem slots Start by inserting a Modem into the leftmost channel slot 1 of the Rack The toggle switch should be at the bottom of the Card with the component side of the Card facing the right The Modem s gold edge connector is offset so that the Modem cannot be inserted incorrectly Continue installing Modem Cards in the Rack as needed V 34 RACKMOUNT MODEM CARD 3 Plug the RS 232C Cable into the appropriate modem slot DB25 25 pin connector female at the rear of rack NOTE Any cables connected to the computer must be shielded to reduce interference 4 Ifyou are connecting your phone line directly to the Modem Card plug one end of the RJ 11 cable provided with the modem into the Rack s RJ 11 connector located on the back plane of the modem rack and the other end into the phone company provided RJ 11 or RJ 11W modular phone jack 5 Plug in the Modem Rack power cord 6 Verify the remote modem s current configuration settings with your V 34 Rackmount Modem Card in ter
34. desconectado del cuando el equipo no sea usado por un largo periodo de tiempo 17 Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de ventilaci n 18 Servicio por personal calificado deber ser provisto cuando A El cable de poder o el contacto ha sido da ado u B Objectos han ca do o l quido ha sido derramado dentro del aparato o C El aparato ha sido expuesto a la lluvia o D El aparato parece no operar normalmente o muestra un cambio en su desempe o o E El aparato ha sido tirado o su cubierta ha sido da ada V 34 RACKMOUNT MODEM CARD jo FCC REQUIREMENTS FOR TELEPHONE LINE EQUIPMENT The Federal Communications Commission FCC has established rules which permit this device to be directly connected to the telephone network with standardized jacks This equipment should not be used on party lines or coin lines If this device is malfunctioning it may also be causing harm to the telephone network this device should be disconnected until the source of the problem can be determined and until the repair has been made If this is not done the telephone company may temporarily disconnect service Ifyou have problems with your telephone equipment after installing this device disconnect this device from the line to see if it is causing the problem If it is contact your supplier or an authorized agent The telephone company may make cha
35. eased Line Restoral e ITU T V 42 LAP M and MNP Classes 3 and 4 error correction e Data transfer rates up to 115 200 bps with V 42bis 4 to 1 data compression e Automatic disabling of compression when transferring already compressed files e Serial port data rates adjustable to 115 2K bps V 34 RACKMOUNT MODEM CARD Autodial redial pulse rotary and touch tone dial Dial tone and busy signal detection for reliable call progress detection Compatibility with the standard AT command set used by most communication programs On screen help menus Nonvolatile memory for storage of customized modem parameters and ten telephone numbers Sends and receives faxes from your computer at 14 400 9600 7200 or 4800 bps Responds to EIA TR 29 Class 2 fax commands Supports Unix to Unix UUCP Spoofing Supports the IBM AS 400 and System 3X environment 2 3 How to Use this Manual Chapter 1 lists the specifications for the V 34 Rackmount Modem Card Chapter 2 this chapter begins with a short introduction a profile on modem features followed by a guide which you are now reading to the use of this manual Chapter 3 describes hardware installation and configuration Chapter 4 covers communication software configuration recommended specifically for the V 34 Rackmount Modem Card Other issues covered include setting up initialization strings changing default parameters configuring software for the remote system and file tra
36. eceive an OK message from your modem if responses are enabled the local modem is placed in Digital Loopback mode To exit the Digital Loopback Test remote automatic pull out and then reinsert the Modem Card into the Modem Rack Computer or Terminal Local V 34 Remote V 34 Computer or Terminal Rackmount Rackmount Modem Card Modem Card UUUUU UUUUU Digital Analog Analog Digital DIP Switch 9 amp T4 Command DOWN Answ Orig Switch Toggled to Answ position when On line Figure 6 6 Digital Loopback Test remote automatic Synchronous 7 Service and Technical Support Our technical support personnel can help you get the most out of your V 34 Rackmount Modem Card If you have any questions about the operation of this unit call 724 746 5500 Please fill out the modem information below and have it available when you call If your modem requires service the tech support specialist will guide you on how to send in your modem Please fill in the following information on your Modem This will help tech support in answering your questions Modem Model No Modem Serial No Modem Firmware Version COM Port Fax Software Type and Version Datacomm Software Type and Version The modem model and serial numbers are silkscreened on the bottom of your modem The software versions are printed on the diskette labels Type ATT to display the modem firmware version Please note the statu
37. ects Result Codes displayed OI selects Result Codes suppressed quiet Q2 selects Dumb Answer Mode V 34 RACKMOUNT MODEM CARD COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION amp Qn n 0orl amp QO amp Q0 selects proprietary command set amp OI selects AT command set Rn n 0orl RO RO means modem will not reverse modes RI means modem will reverse modes amp Rn n 0 1lor2 amp RI amp RO lets Clear to Send act normally amp R1 forces Clear to Send on amp R2 drops for 1 second on disconnect Rn n 0orl RO RO selects disconnect after 12 retransmits RI selects do not disconnect after 12 retransmits amp RFn n 0orl amp RF1 amp RFO selects CTS follows RTS amp RFI selects CTS to act independently Sr n r 0 11 13 15 17 24 26 29 30 32 34 36 37 48 n a Sets value of S Register r to value of n where n is entered in decimal format Sr r 0 11 13 15 17 24 26 29 30 32 34 36 37 48 n a Reads value of S Register r and displays value in 3 digit decimal format V 34 RACKMOUNT MODEM CARD COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION
38. election keyboard controlled modem options non volatile memory and on screen displays for modem option parameters and up to ten telephone numbers command lines of up to 60 digits each help menus V 34 RACKMOUNT MODEM CARD Command Buffer 60 characters Modulation Trellis Coded Modulation TCI at 33 600 31 200 28 800 26 400 24 000 21 600 19 200 16 800 14 400 12 000 and 9600 bps QAM at 9600 non trellis 4800 and 2400 bps PSK at 1200 bps FSK at 300 bps Fax Modulations V 21CH2 FSK at 300 bps V 27ter DPSK at 4800 and 2400 bps V 29 QAM at 9600 and 7200 bps V 17 TCM at 14400 12000 9600 and 7200 bps Fax Carrier Frequencies V 21CH2 Half Duplex 1650 Hz Mark 1850 Hz Space for Transmit Originate 1650 Hz Mark 1850 Hz Space for Transmit Answer V 27 ter 1800 Hz Originate Answer V 29 QAM 1700 Hz Originate Answer V 17 TCM 1800 Hz Originate Answer Carrier Frequencies Data 1800 Hz V 32 V 32bis V 34 Enhanced V 34 33 6 K 31 2 K 28 8 K 26 4 K 24 K 21 6 K 19 2 K 16 8 K 14 4 K 12 K 9 6 K 7 2 K 4 8 K Carrier Frequencies 2400 and 1200 bps V 22bis V 22 or Bell 212A Standard Transmit Originate 1200 Hz Transmit Answer 2400 Hz Receive Originate 2400 Hz Receive Answer 1200 Hz Carrier Frequencies 300 bps Bell Standard 1270 Hz Mark 1070 Hz Space for Transmit Originate 2225 Hz Mark 2025 Hz Space for Transmit Answer 1270 Hz Mark 1070 Hz Space for Receive Answer Carrier Frequencies
39. ervicio al equipo el ctrico m s alla a lo descrito en las instrucciones de operaci n Todo otro servicio deber ser referido a personal de servicio calificado El aparato el ctrico debe ser situado de tal manera que su posici n no interfiera su uso La colocaci n del aparato el ctrico sobre una cama sof alfombra o superficie similar puede bloquea la ventilaci n no se debe colocar en libreros o gabinetes que impidan el flujo de aire por los orificios de ventilaci n El equipo el ctrico deber ser situado fuera del alcance de fuentes de calor como radiadores registros de calor estufas u otros aparatos incluyendo amplificadores que producen calor V 34 RACKMOUNT MODEM CARD 11 El aparato el ctrico deber ser connectado a una fuente de poder s lo del tipo descrito en el instructivo de operaci n o como se indique en el aparato 12 Precauci n debe ser tomada de tal manera que la tierra fisica y la polarizaci n del equipo no sea eliminada 13 Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados sobre o contra ellos poniendo particular atenci n a los contactos y recept culos donde salen del aparato 14 El equipo el ctrico debe ser limpiado nicamente de acuerdo a las recomendaciones del fabricante 15 En caso de existir una antena externa deber ser localizada lejos de las lineas de energia 16 El cable de corriente deber ser
40. es the duration of time the modem attempts to reestablish the leased line connection PBX CBX Disconnect Drop Time for DSR CTS CD Unit Range Default Description S25 DTR Dropout Time Unit Range Default Description S26 Failed Password Attempts Unit Range Default Description S29 Local Inactivity Timer Unit Range Default Description 50 milliseconds 0 255 20 Defines DSR CTS CD dropout time The default of 20 equals one second 100 milliseconds 0 1 through 255 0 Defines DTR dropout time The default of 0 equals 50ms 1 failed attempt 0 255 0 Counts the number of times there has been a failed password attempt minutes 1 255 20 Defines the amount of idle time that can elapse between AT commands after the SETUP password has been entered V 34 RACKMOUNT MODEM CARD S30 Inactivity Timer Unit 1 minute Range 0 255 Default 0 Description Inactivity timer used to disconnect the modem S32 Time Elapse for Escape Sequence Unit 1 second Range 0 255 Default 20 Description Sets the duration in which modem waits for a lt CR gt to be entered during escape sequence execution S34 Buffer Length of Command Mode After Online Escape Sequence Unit ASCII Character Range 0 60 Default 10 Description Sets buffer length of command mode after on line escape sequence S36 Time Between DTR Inactive and Modem Off Hook Unit 1 second Range 0 255
41. esponsible for compliance could void the user s authority to operate the equipment This digital apparatus does not exceed the Class A limits for radio noise emission from digital apparatus set out in the Radio Interference Regulation of Industry Canada Le pr sent appareil num rique n met pas de bruits radio lectriques d passant les limites applicables aux appareils num riques de la classe A prescrites dans le R glement sur le brouillage radio lectrique publi par Industrie Canada V 34 RACKMOUNT MODEM CARD 10 NORMAS OFICIALES MEXICANAS NOM ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD Todas las instrucciones de seguridad y operaci n deber n ser le das antes de que el aparato el ctrico sea operado Las instrucciones de seguridad y operaci n deber n ser guardadas para referencia futura Todas las advertencias en el aparato el ctrico y en sus instrucciones de operaci n deben ser respetadas Todas las instrucciones de operaci n y uso deben ser seguidas El aparato el ctrico no deber ser usado cerca del agua por ejemplo cerca de la tina de ba o lavabo s tano mojado o cerca de una alberca etc El aparato el ctrico debe ser usado nicamente con carritos o pedestales que sean recomendados por el fabricante El parato el ctrico debe ser montado a la pared o al techo s lo como sea recomendado por el fabricante Servicio El usuario no debe intentar dar s
42. fault 70 80 Description Sets the time duration of spacing between tones in tone dialing Value for International and DOC units Value for International Units only V 34 RACKMOUNT MODEM CARD S13 Remote Configuration Escape Character Unit Range Default Description S15 Callback Time Delay Unit Range Default Description S16 Callback Attempts Unit Range Default Description S17 Changing Break Time Unit Range Default Description S18 ASCII Character 0 127 37 96 sign Defines the remote configuration escape character Seconds 10 255 20 S15 defines the time delay for Callback attempts after initial passwords have been exchanged between modems 1 Attempt 1 255 4 S16 defines the number of attempts allowed after initial passwords have been exchanged between modems 10 milliseconds 0 2 5 sec 250 S17 defines the break time space to local PC Automatic Leased Line Restoral Unit Range Default Description 30 minutes 10 255 30 minutes S18 periodically checks the leased line to see if it s operational and restores the lease line if possible while in dial back up mode S18 defines how often attempts occur The default of S18 is 30 minutes and can be set in one minute increments from 10 to 255 minutes V 34 RACKMOUNT MODEM CARD S19 Dial Back Timer Unit Range Default Description S24 1 minute 0 255 1 S19 specifi
43. further compress a compressed file but MNP 5 will The command to disable compression is AT amp E14 lt CR gt amp E14 If you have an older UART or if you use your modem mostly for downloading long compressed files from BBSs you may want to include the amp E14 command in your initialization V 34 RACKMOUNT MODEM CARD string as follows AT amp F S020 X4 E14 M As a general rule you should try to transmit files in already compressed form rather than relying on V 42bis hardware compression Because software compression is more efficient than hardware compression you will have a higher throughput with software compression Of course this efficiency does not include the time spent compressing and decompressing ZIP or SIT files but it will save on phone bills And hardware compression will still be there for those occasions when it is inconvenient to compress a file with software Note also that when you download files with compression disabled you can use a slower serial port speed if you have an older UART 4 7 1 DISABLING ERROR CORRECTION By default the V 34 Rackmount Modem Card is set to auto reliable mode In this mode the Modem determines during the handshake whether the other modem is using V 42 error correction If it is the Modem then switches itself to reliable mode and enables error correction If it is not the Modem remains in non error correction mode Normally we recommend that you leave the V 34 Rackmount
44. gency numbers b Modes other than modes 1 2 or 3 should not be used on the BT PSTN The modem is a mode 1 device c Users are advised to check the numbers entered during the Auto Call setup phase prior to dialing d The user should not issue any sequence of commands to the modem that would cause the modem to exceed the maximum allowable pause of 8 seconds from the time the modem goes off hook until dialing begins e For correct operation of the call progress monitor the power has to be properly connected and switched on Compliance with BS6328 Part 1 a The modem is not suitable for use on circuits with British Telecommunications signalling at a normal frequency of 2280 Hz b The modem does not require signalling or otherwise employ the frequency range dc to 200 Hz V 34 RACKMOUNT MODEM CARD c The modem may be connected to a point to point two wire or four wire Private Circuit d The modem does not require dc from the Private Circuit for correct operation The modem may be damaged if connected in a private circuit mode to a circuit supplying de current the maximum permissible direct current is zero amps Canadian Limitations Notice Notice The ringer equivalence number REN assigned to each terminal device provides an indication of the maximum number of terminals allowed to be connected to a telephone interface The termination of an interface may consist of any combination of devices subject only to the requ
45. irements that the sum of the ringer equivalence numbers of all the devices does not exceed 5 Notice The Industry Canada label identifies certified equipment This certification means that the equipment meets certain telecommunications network protective operational and safety requirements The Industry Canada does not guarantee the equipment will operate to the user s satisfaction Before installing this equipment users should ensure that it is permissible to be connected to the facilities of the local telecommunications company The equipment must also be installed using an acceptable method of connection The customer should be aware that compliance with the above conditions may not prevent degradation of service in some situations Repairs to certified equipment should be made by an authorized Canadian maintenance facility designated by the supplier Any repairs or alterations made by the user to this equipment or equipment malfunctions may give the telecommunications company cause to request the user to disconnect the equipment Users should ensure for their own protection that the electrical ground connections of the power utility telephone lines and internal metallic water pipe system if present are connected together This precaution may be particularly important in rural areas Caution Users should not attempt to make such connections themselves but should contact the appropriate electric inspection authority or electrician
46. ith the remote modem for normal data transmission type ATO and hit ENTER If you wish to terminate the call type ATH and hit ENTER to hang up 6 3 Digital Loopback Test V 54 Loop 2 Remote Automatic In this test your modem must be on line with another modem set up to respond to a request for Digital Loopback The test procedure is as follows 1 Go into Terminal mode Type AT and hit ENTER you should get an OK message V 34 RACKMOUNT MODEM CARD 2 Dial the remote modem by entering the Dial command and the phone number to establish On Line mode NOTE The amp T4 command must be set on the remote modem to run this test 3 Type the Escape Sequence AT lt CR gt or lt BREAK gt AT lt CR gt which brings your modem into Command mode while still maintaining the connection with the remote modem 4 Type ATU2 and hit ENTER The local modem responds to this command by transmitting an unscrambled marking signal which causes the remote modem to place itself in Digital Loopback mode Then the local modem exits Command mode and enters pseudo On Line mode Computer or Terminal Local V 34 Remote V 34 Computer or Terminal Rackmount Rackmount Modem Card Modem Card UUUUU UUUUU Digital Analog Analog Digital Type AT in Terminal mode hit ENTER dial remote modem establish On line mode enter escape sequence type ATU2 hit ENTER Figure 6 3 Digital Loopback Test remote automatic 5 Type data from your key
47. k Disabled UP Clock controlled Sync Dial Up Leased DOWN by remote device Factory Default Setting I V 34 RACKMOUNT MODEM CARD Table 3 1 continued DIP Switch Settings Switch Function 7 RTS Normal Forced Sync Async Dial Leased DOWN 8 Command Mode Enabled UP Sync AsyncDial Leased DOWN 9 Local Remote Loopback Async Sync Dial Leased DOWN 10 Dial Up Leased Line 11 AT Proprietary Result Codes Asynchronous 11 Internal External Clocking Synchronous 12 Sync Async Mode Factory default setting Effect RTS Forced On Command Mode Enabled Remote Loopback Enabled Dial Up Enabled Proprietary Result Codes Enabled Selects Transmit Clock Source Async Enabled V 34 RACKMOUNT MODEM CARD Table 3 2 DIP Switches 13 16 Switch Condition Effect 13 14 UP UP 28 8 Kbps Operation Default 13 14 DOWN UP 19 2 Kbps Operation 13 14 UP DOWN 14 4 Kbps Operation 13 14 DOWN DOWN 9600 bps Operation NOTE A modem baud rate command for example MB33600 overrides the setting of these speed selection switches DIP switches 13 and 14 Switch Condition Effect 15 UP CD DSR from Interface 15 DOWN CD DSR Forced On 16 UP 2 Wire Operation 16 mp1600c DOWN 4 Wire Operation 1 P i ination wi 6 wpteotc U Used ICCOROBIRAUOR with 16 DOWN DIP Switch 9 Loopback Tests Factory Default Setting V 34 RACKMOUNT MODEM CARD 3 4 00S Busy Out Toggle Switch
48. mand 1 AT amp FX4S0 2 M Modem Command 2 Modem Command 3 Modem Command 4 Modem Command 5 Command Error ERROR No dialtone NO DIALTONE Line Busy mE No answer NO ANSWER Connect CONNECT Figure 4 2 An example of modem initialization setup NOTE The above and following setup screens are examples from a particular data communications package other third party software will have different screens V 34 RACKMOUNT MODEM CARD 4 4 1 CHANGING DEFAULT PARAMETERS ATDT for touch tone service and ATDP for rotary service the dialing suffix M the hang up string ATH0M and response messages RING NO CARRIER BUSY etc Communications software with a host mode might also include an auto answer AT S0 1 M 4 5 Macintosh Initialization Macintosh computers cannot use RTS CTS hardware flow control without a serial cable wired for hardware control The old Macintosh 128 and 512 models cannot use RTS CTS flow control at all For those Macintosh computers turn off the default RTS CTS hardware flow control turn on XON XOFF flow control and pacing and ignore DTR AT amp F X4 amp E5 amp E13 amp D0 M For hardware flow control use the following initialization string AT amp F X4 amp E13 amp D0 M Add 50 0 to both strings to disable auto answer if the Modem is on a voice line You can store the initialization string in nonvolatile memory With your communications software open and conne
49. modem is connected at 14 400 bps NOTE When both 28 8 and 14 4 LEDs light modem is in 21 600 26 400 bps mode of operation V 34 RACKMOUNT MODEM CARD 6 2400 bps 24 This LED is lit when the modem is connected at 2400 bps 7 Off Hook OH This LED is lit when the phone line is off hook This occurs when the modem is dialing on line or answering a call The LED also flashes when the modem is pulse dialing in the Command Mode 8 Data Terminal Ready DTR When the DTR LED is lit the modem is permitted to answer an incoming call When DTR goes off a connected modem disconnects if dependent on DTR The state of this DTR LED matches that of the DTR circuit on Pin 20 of the RS 232C V 24 interface 9 Ring Indicator RI This LED is lit during the ringing interval as an incoming call is received 10 Out of Service Error OOS ERR When the OOS ERR LED is flashing the leased line is down and the modem is in self test mode has failed When OOS ERR LED is on this indicates the modem is in an out of service OOS state When the modem is out of service it is busy to incoming calls V 34 RACKMOUNT MODEM CARD NOTE To verify if you are engaged in V 34 mode first type AT lt CR gt on line escape command while maintaining command mode then type ATL8 The L8 command displays the current on line CONNECT status of the V 34 Rackmount Modem Card What then appears on your monitor is your modem s current on line c
50. ms of data compression error correction transmission rate etc ATL5 ATL7 Command see Chapter 5 on AT commands 7 Attach the V 34 Rackmount Modem Card to dial up phone lines and or leased lines and verify DIP Switch 10 and 5 settings Section 3 5 8 Make sure the modem and computer terminal serial port baud rates are adjusted Section 3 5 9 Set both local and remote modems to either Normal amp E0 amp W0 mode or to Reliable amp E2 amp W0 mode 10 Verify leased line transmit level DIP Switch 3 setting Section 3 3 1 11 Proceed to Chapter 4 of this manual or to the manual for your data communications software 3 3 PC Board Controls The V 34 Rackmount Modem Card is designed on a single printed circuit board This board contains sixteen DIP switches a two position Out of Service OOS toggle switch that extends from the front of the modem circuit card and a TEST OOS Berg jumper V 34 RACKMOUNT MODEM CARD Figure 3 1 V 34 Rackmount Modem Card The sixteen DIP Switches and the Berg jumper control various modem options or set default values for the V 34 Rackmount Modem Card s Command mode There is a difference in how several of the switches operate depending on whether you are in synchronous or asynchronous mode DIP Switch 12 Most communications software packages have installation procedures of their own which call for certain modem DIP Switch settings Refer to the manual for the software
51. n Power up Figure 6 4 Local Analog Loopback Test Synchronous Mode 6 5 Digital Loopback Test Local Manval Synchronous Mode This test must be run when you have a data connection with another modem To initiate the Digital Loopback Test local manual DIP Switch 9 must be in the UP position then place DIP Switch 16 in the position opposite to the one it is currently in the modem requires a state of change in Switch 16 to activate Loopback tests Once you receive an OK message from your modem if responses are enabled the local modem is placed in Digital Loopback mode V 34 RACKMOUNT MODEM CARD To exit the Digital Loopback Test local manual pull out and then reinsert the Modem Card into the Modem Rack Local V 34 Remote V 34 Rackmount Rackmount Modem Card Modem Card UUUUU UUUUU Digital Analog Analog Digital Computer or Terminal Computer or Terminal DIP Switch 9 UP Answ Orig Switch Toggled to Answ position when On line Figure 6 5 Digital Loopback Test local manual Synchronous 6 6 Digital Loopback Test Remote Automatic Synchronous Mode This test must be run when you have a data connection with another modem To initiate the Digital Loopback Test remote automatic DIP Switch 9 must be in the DOWN position then place DIP Switch 16 in the position opposite to the one it is currently in the modem requires a state of change in Switch 16 to activate Loopback tests Once you r
52. nd characters and hit RETURN V 34 RACKMOUNT MODEM CARD 5 1 1 CALLBACK SECURITY COMMANDS COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION DBn n 0 l or 2 DBO DBO disables Callback Security Answering Yes to the prompt turns off Callback Security and erases stored phone numbers and passwords Answering No to the prompt aborts the command DB1 activates remote and local password security DB2 activates remote password security CBNyyxxxxxx n a n a Callback password with xxxxxx being callback password and yy being the memory location Callback password xxxxxx must start with a non numeric character and is case sensitive Callback password xxxxxx must be a minimum of 6 and maximum of 10 characters yy memory locations are from 0 to 29 Must have T tone dialing in string Dxxxxxx Nxx n a n a Callback Phone Numbers xxxxxx with the preceding the phone number indicating the callback modem phone number for the corresponding password at the same memory location The preceding the phone number enables direct entry when the caller uses the correct password without the callback modem having to return the call The entry at the end of the phone number represents an extension added to the main phone number Nxx is the memory location of the callback phone number and passwo
53. nges in its technical operations and procedures If any such changes affect the compatibility or use of this device the telephone company is required to give adequate notice of the changes If the telephone company requests information on what equipment is connected to their lines inform them of a The telephone number that this unit is connected to b The ringer equivalence number c The USOC jack required RJ 11C d The FCC registration number Items b and d can be found on the unit s FCC label The ringer equivalence number REN is used to determine how many devices can be connected to your telephone line In most areas the sum of the RENs of all devices on any one line should not exceed five 5 0 If too many devices are attached they may not ring properly In the event of an equipment malfunction all repairs should be performed by your supplier or an authorized agent It is the responsibility of users requiring service to report the need for service to the supplier or to an authorized agent TRADEMARKS Any trademarks mentioned in this manual are the sole property of their owners V 34 RACKMOUNT MODEM CARD CONTENTS l1 Specifications esseri pirrer ehe n nea ape cane ae eae Rs 7 2 Introduction and Description sss ss sss sesissssssnisrinn isr is 10 2 1 Introduction evoca a a EE YS 10 2 2 Keat fes cei sa e ee ee 10 2 3 How to Use This Manual 11 3 Installing Your Modem sesei s eee cece eee eee ee 12
54. nsfer protocols Chapter 5 covers modem AT commands Remote Configuration commands S Registers and Result Codes Chapter 6 illustrates the V 34 Rackmount Modem Card s diagnostic capabilities providing Analog and Digital Loopback testing procedures Chapter 7 explains how to obtain service and technical support assistance 3 Installing Your Modem 3 1 Before You Begin 3 1 1 MODEM RACK WITH POWER SUPPLY RM1600 The V 34 Rackmount Modem Card MD1600C or MD1601C is designed to mount in the Modem Rack with Power Supply RM1600 This rack is an EIA standard 19 inch wide by 7 inch high rack and mounts in any standard computer cabinet The rack has a sixteen modem slot capacity one power supply source you can also order a Redundant Power Supply part number PS1600 sixteen DB25 female connectors for RS 232C V 24 interface and sixteen RJ 11 backplane connectors for phone line interface 3 1 2 SERIAL CABLE You must provide a serial cable to connect each corresponding V 34 Rackmount Modem Card s to your computer The cable must have a DB25 male interface to connect to the modem rack We recommend cable part number EDM25C 3 1 3 TELEPHONE LINE The V 34 Rackmount Modem Card uses one RJ 11 jack per corresponding modem slot to connect to the telephone lines To connect the modem to the phone lines plug one end of the RJ 11 cable that is provided with the modem into the rack s RJ 11 connector located on the backplane of the mo
55. om your computer or terminal is sent to your modem s transmitter converted into analog form looped back to the receiver converted into digital form and then received back at your monitor for verification No connection to the phone line is required See Figure 6 1 L Computer or Terminal V 34 Rackmount Modem Card UUUUU UUUUU Type ATUO or ATU7 hit ENTER Figure 6 1 Local Analog Loopback Test Digital Analog The test procedure is as follows Connect the modem to your computer With your communication software set the desired baud rate 2 Type ATUO or ATU and hit ENTER This places your modem in Analog Loopback mode in the Originate mode The modem is now out of the Command mode and in a pseudo On Line mode 3 Once you receive a connect message if responses are enabled enter data from your keyboard For this test typing multiple upper case U characters is a good way to send an alternating test pattern of ones and zeros 4 For a more complete test you should also test the modem in Answer mode To do this you must escape from Originate mode by entering an Escape Sequence AT lt CR gt or lt BREAK gt AT lt CR gt Then type ATUI and hit ENTER to place the modem in Analog Loopback mode in the Answer mode Then repeat step 3 V 34 RACKMOUNT MODEM CARD 5 When testing is completed you may exit Answer mode by entering an Escape Sequence AT lt CR gt or lt BREAK g
56. ondition i e DSP and Firmware version Link Type Line Speed Serial Speed Type of Error Correction Data Compression Number of past Retrains etc An example of L8 listing is shown in Figure 3 4 MultiExpress for Windows File Edit Setup Perform Feb29 96 1 45pm MEWDEF 00 13 09 Transfer Windows Connected to device seri zitala 024 2A71 0213 t boeoeeeeexxx ONLINE DIAGNOSTICS seeeeeeeeec TYPE U 34 SPEED 26400 26400 19200 RROR CNTRL COMPRESS LAPM COMPRESSED BACK FORWARD LOCALLY ENABLED FORMAT ASYNCHRONOUS SYMBOL RATE SYMETRIC 3200 3200 CARRIER FREQUENCY 1920 1920 TRELLIS ENCODER 4D 16 STATE 4D 16 STATE PRECODING OFF OFF INE TYPE DIAL UP RECU SIGNAL LEVEL 023 5 dBm TRANS SIGNAL LEVEL 011 dBm UMBER OF RETRAINS 000 ROUND TRIP DELAY 0005 ms MEANINGFUL IN U34 AND U32 MODE EAR FAR ECHO LEVEL 028 5 072 0 dBm y E EZ E BEER F5 F6 F7 F8 F9 F10 El F12 ANSI 80 FULLDX LOG CLOSED COM2 19200 N81 PRINT OFF HIDE KEYS Figure 3 4 An example of how the online diagnostics might appear 4 Software Configuration 4 1 Introduction Since the configuration of your communications software is affected by the capabilities of your computer this chapter begins with a discussion of the limitations of some serial ports and how to identify them It then discusses communications configuration in general and recommends settings specifically f
57. ones to access user s calling card to originate an online connection Ay n a n a Repeat last command Do not precede this command with AT Do not hit RETURN to execute V 34 RACKMOUNT MODEM CARD COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION A n a n a Continuous redial 10 redials in DOC units of last number until answered Not used in international models An n 0orl A0 A0 discards data during auto reliable time period A1 buffers data during auto reliable time period HAn n 0 thru 3 HAO AO selects initial handshake at 33 600 to 31 200 to 28 800 to 24000 to 21 600 to 19 200 to 16 800 to 14 400 to 12 000 to 9600 to 4800 to 2400 to 1200 to 300 bps AT selects initial handshake at 33 600 bps only A2 selects initial handshake at 33 600 to 31 200 to 28 800 to 24000 to 21600 to 19 200 to 16 800 19 200 to 14 400 to 9600 to 4800 bps A3 selects initial handshake at 2400 to 1200 to 300 bps Bn n 0orl BO BO selects V 21 for 300 bps operation B1 selects 300 bps operation Not used in international models amp Bn n 0orl amp BO amp BO selects normal transmit buffer size amp B1 selects reduced transmit buffer size V 34 RACKMOUNT MODEM CARD COMMAND VALUES DEFAULT DESCRIPTION COMMAND
58. or the V 34 Rackmount Modem Card 4 2 Serial Port Limitations When you configure your software you need to consider how the hardware on both ends of the connection will affect the connection Some serial ports particularly those in older PC compatible computers may limit the performance of the V 34 Rackmount Modem Card You should know if yours is one of them The limiting factor is an integrated circuit called a Universal Asynchronous Receiver Transmitter or UART An early UART used in PC XT and compatible computers was the 8250 followed by the 8250A UART The UARTs typically used in today s PC compatible computers include types 16450 16550 16554 16650 16654 and 16750 For example the Pentium 200 uses a 16550 UART When a modem communicates with V 42bis 4 to 1 compression enabled it sends up to four times as much uncompressed data to the serial port as it receives compressed over the telephone line Therefore a modem communicating with at 14 400 bps may require a serial port that can reliably transfer data at four times 14 400 bps or 57 600 bps at 19 200 it may require one that works reliably up to four times 19 200 or 76 800 bps and at 28 800 bps it may require one that works reliably up to four times 28 800 bps or 115 200 bps If your serial port cannot handle these speeds we recommend that you replace your present serial card with one that has at least a 16550FN UART or equivalent Macintosh computers do not use UARTs
59. orl T1 TO turns off Trellis Coded Modulation T1 turns on Trellis Coded Modulation Un n 0 1 2 0r3 n a U0 places modem in Analog Loop Originate Mode Ul places modem in Analog Loop Answer Mode U2 places modem in Remote Digital Loopback test mode U3 places modem in Local Digital Loopback Test Mode Vn n 0orl VI V0 means Result Codes sent as digits terse response V means Result Codes sent as words verbose response Vn n 0orl V1 Bypass V 32terbo handshaking process V0 means V 32terbo enabled in originate answer mode V1 means V 32terbo disabled in originate answer mode W n a n a Wait for new dial tone V 34 RACKMOUNT MODEM CARD COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION amp Wn n 00rl amp W1 amp WO causes modem to store its current parameters in non volatile RAM and modem will load these for future sessions instead of reading factory ROM defaults unless amp F command is used amp W1 causes modem not to store parameters Xn n 0 1 2 30r4 X0 XO selects Basic Result Codes w o CONNECT 1200 CONNECT 2400 XI selects Extended Result Codes w CONNECT 1200 CONNECT 2400 X2 selects Standard AT Command set with NO DIAL TONE X3 selects Standard AT Command set with BUSY X4 select
60. package you ll be using to see if it requires any such settings 3 3 1 DIP SwrrcH SETTINGS The vast majority of installations are similar with the V 34 Rackmount Modem Card being used to dial up a remote installation where the call is automatically answered The factory default DIP Switch settings are based on this assumption Table 3 1 contains a brief description and summary of the V 34 Rackmount Modem Card s DIP Switch options V 34 RACKMOUNT MODEM CARD Table 3 1 DIP Switch Settings Switch Function Position Effect 1 DTR Forced UP DTR forced from DTR from Interface DOWN computer terminal 2 Flow Control amp E4 UP Hardware flow Async Dial Up Leased DOWN control enabled Line 2 SDLC BSC Sync UP SDLC enabled DOWN 3 Result Codes Enabled UP Modem responses Async Dial up DOWN are echoed 3 DbM Transmit UP Lease Line MD1600C 9dB 15dB DOWN MD1600C transmits MD1601C 15dB 11dB at 9dB MD1601C Async Sync Lease Line transmits at 15 dB 4 UUCP Disabled Async Up UUCP spoofing Dial Up Leased Line DOWN Disabled 4 AS 400 Mode Disabled UP AS 400 Mode SyncDial Up Leased line DOWN Disabled 5 Auto Answer Enabled UP Auto Answer Async Sync Dial Up DOWN in dial up mode 5 Answer Originate UP Originate call in Async Sync Leased Line DOWN Lease Line mode 6 Max Throughput Enabled UP Modem set up to Async Dial Up Leased DOWN operate at highest efficiency level 6 Slave Cloc
61. pt After the opening screen select COM Ports The last line of the report tells you what type UART you have for each COM port MSD does not distinguish between the 8250 and the 8250A However if you have an IBM AT Pentium or newer computer you likely have an 8250A 16450 16550 16554 16650 16654 or 16750 UART installed all of which are reliable at least up to 19 200 bps If you would like more information about your UART than MSD can provide you can download shareware UART identification programs from the IBM Communications Forum on CompuServe or from a local BBS V 34 RACKMOUNT MODEM CA Unknown Unknown 4865x 640K 7160K Ext 1024K XMS VGA Unknown Novell Shell 3 32 00 MS DOS Version 5 00 windows 3 10 Serial Mouse Press Alt for Menu Port Address Baud Rate Parity Data Bits Stop Bits Carrier Detect CD Ring Indicator RI Data Set Ready DSR Yes Clear to Send CTS No UART Chip Used 16550AF Figure 4 1 MSD UART Identification V 34 RACKMOUNT MODEM CARD Table 4 1 Buffer Sizes of Common UARTs UART FIFO Buffer 8250 1 byte 8250A 1 byte 16450 1 byte 16550 16 bytes 16554 16 bytes 16650 32 bytes 16654 64 bytes 16750 64 bytes 4 2 2 ADVANCED UARTs AND WINDOWS 3 1 Windows 3 1 may cause a loss of data when communicating at high speed even with a 16550 16554 16650 or 16654 or 16750 UART installed Windows 95 and 98 do not have this problem Because Windows is multitasking
62. rd Pn n 0 1 or 2 HPO Parity of the prompt messages sent by the callback modem V 34 RACKMOUNT MODEM CARD COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION 5 1 2 V 25BIs COMMANDS COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT P0 is no parity P1 is odd parity P2 is even parity RCBNxx n a n a Erases the callback password stored at memory location xx Memory locations are 0 to 29 RDNxx n a n a Erases the callback phone number stored at memory location xx Memory locations are 0 to 29 Vn n 0 1 2 5 or 6 V0 VO returns modem to AT command mode when in V 25bis mode V1 enables V 25bis mode of operation V2 allows modem to receive one V 25bis command while in AT command mode without leaving AT command mode V5 DSR follows DTR in V 25bis mode V6 DSR does not follow DTR in V 25bis mode CRNdd n a n a Dials phone number dd where dd can be up to 20 characters 0 through 9 P T and The phone number is checked against the Delayed and Forbidden Number lists before it is dialed CSPs n a n a V 34 RACKMOUNT MODEM CARD DESCRIPTION The CSP command will change the serial baud rate of your modem CSP0300 300 bps CSP1200 1200 bps CSP2400 2400 bps CSP4800 4800 bps CSP9600 9600 bps CSP19200 19200 bps CSP38400 38400 bps CSP57600 57600 bp
63. s CSP115200 115200 bps COMMAND CRIdd nn VALUES n a DEFAULT n a DESCRIPTION Dials dd same as CRN Command and ignores nn identification string COMMAND DIC or CIC VALUES n a DEFAULT n a DESCRIPTION The disregard or connect to incoming calls command is used for auto answer operations DIC stops the modem from answering incoming calls CIC causes the modem to answer incoming calls 5 1 3 REMOTE CONFIGURATION The Remote Configuration feature is a network management tool that allows you to configure modems remotely This means you could configure modems anywhere in your network from one location without having to visit the sites or rely on remote users to follow your instructions With Remote Configuration which is protected by two level security you can download new parameters program new V 42 capabilities and implement new features Remote Configuration also makes troubleshooting a remote location a lot easier The way Remote Configuration works is that S Register S13 has been set up to contain the special Remote Configuration escape code When calling a modem equipped with Remote Configuration you enter the proper Remote Escape code to enable entering your Set up Password After entering it you can then execute AT commands as if you were connected locally If you set S Register S13 to zero Remote Configuration is disabled V 34 RACKMOUNT MODEM CARD 5 1 4 REMOTE CONFIGURATION PROCEDURES The procedures for
64. s Standard AT Command set with NO DIAL TONE and BUSY Xn n 0orl X0 X0 selects single XOFF character sent until XON level returns X1 selects multiple XOFF characters after buffer level is full Yn n 0orl YO YO disables sending or responding to long space break Y1 enables sending or responding to long space breaks Z n a n a All configuration parameters are reset to default values V 34 RACKMOUNT MODEM CARD COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION COMMAND VALUES DEFAULT DESCRIPTION comma n a n a Causes pause during dialing semicolon n a n a Causes return to Command Mode after dialing exclamation point n a n a Causes modem to flash On Hook n a n a Causes modem to wait for ringback then 5 seconds of silence before processing next part of command 4 AT lt CR gt n a n a In band Escape Sequence Places modem in Command mode while still remaining online Enter followed by the letters A and T up to ten command characters and a RETURN BREAK AT lt CR gt n a n a Out of band Escape Sequence Places modem in Command mode while still remaining online Not preceded by AT Enter a BREAK signal followed by the letters A and T up to sixty comma
65. s of your modem before calling tech support This status can include LED indicators screen messages diagnostic test results problems with a specific application etc Use the space below to note modem status If your tech support specialist decides that service is required modems may be sent to our factory Include the following with your modem e adescription of the problem e return address e contact name and phone number e if possible note the name of the technical support specialist with whom you spoke Appendix Regulatory Information FCC Class A Compliance See page 1 of this manual Compliance with BABT Requirements Approved for connection to telecommunications system specified in the instructions for use subject to the conditions set out in them WARNING Interconnection directly or by way of other apparatus of ports marked SAFETY WARNING see instructions for use with port marked or not so marked may produce hazardous conditions on the network Advice should be obtained from a competent engineer before such a connection is made The apparatus has been approved for use of the following facilities e Auto calling e Loop disconnect and MF dialing Phone number storage and retrieval by a predetermined code Operation in the absence of proceed indication Automatic storage of last number dialed Tone detection busy Auto clear from the originating end DTR dialing Modem e PBX timed break regi
66. ster recall European Low Voltage Directive When correctly installed and maintained the modem will present no hazard to the user When correctly installed the modem will be connected to the PSTN or a PW and to a Data Terminal Equipment DTE whose modem connections comply V 34 RACKMOUNT MODEM CARD with CCITT recommendation V 28 The DTE connections are therefore taken to be safe voltages less than 30 volts The main power source shall be installed near to the equipment and shall be easily accessible The plug that connects the apparatus to the main power supply must be fitted with a 5A fuse that complies with BSI1362 Ports that are capable of connecting to other apparatus are defined as SELV To ensure conformity with EN41003 make sure that these ports are only connected to ports of the same type on other apparatus Compliance with BS6305 Clause 6 2 BS6320 Clause 7 2 and BABT SITS 82 0055 D a The modem is suitable for connection to the Public Switched Telephone Network PSTN provided by British Telecommunications plc or Kingston Communications Hull plc Circuit supply by British Communications Mercury Communication or Hull City Council Only direct exchange lines may be used not shared service b The modem is suitable for household office and similar general indoor use It is not suitable for use as an extension to a pay phone c BT lines supplied must support either loop disconnect or multifrequency tone sign
67. t 1 5 Ib 0 68 kg 2 Introduction and Description 2 1 Introduction The V 34 Rackmount Modem Card provides data communication at 33 600 14 400 bps V 34 V 32terbo V 32bis as well as other prevalent datacomm standards The V 34 Rackmount Modem Card also includes dial back up with automatic leased line restoral adaptive protocol enhancing used in typical UNIX batch file transfers and support for the IBM AS 400 and System 3X environment This User s Manual will help you install configure test and use your V 34 Rackmount Modem Card data fax modem The V 34 Rackmount Modem Card automatically adjusts to line conditions and the capabilities of the modem it connects to resulting in the highest possible speed the most accurate error correction and the most efficient data compression possible for each connection The V 34 Rackmount Modem Card is designed for data rates as high as 33 600 bps in full duplex mode over public telephone lines Two models are available e MD1600C V 34 Rackmount Modem Card for 2 4 Wire e MDI601C V 34 Rackmount Modem Card for 2 Wire Only 2 2 Features V 34 Rackmount Modem Card features include e Support of data rates of 33 600 31 200 28 800 26 400 24 000 21 600 19 200 16 800 14 400 12 000 9600 7200 4800 2400 1200 0 300 bps e Automatic fallback to slower speeds in noisy line conditions and fall forward to faster speeds as conditions improve e Dial Back Up with Automatic L
68. t AT lt CR gt which returns the modem to Command mode 6 Your modem passes this test if the data entered from your keyboard are the same as the data received on your monitor If different data is appearing on your monitor your modem is probably causing the problem although it could also be your computer If your modem passes this test but you are receiving errors while on line the remote modem or the phone line could be at fault 6 2 Digital Loopback Test V 54 Loop 2 Local Manval The Digital Loopback Test is an on line test that loops data sent from one modem across the phone line to another modem then back to the first modem See Figure 6 2 There are two ways to put a modem into Digital Loopback mode 1 Locally or Manually described here in Section 6 2 2 Remotely or Automatically see Section 6 3 NOTE All loopback tests will operate at all speeds except 300 bps Disable error correction amp EO amp WO cr before engaging in loopback tests In this test the local modem is placed in Digital Loopback mode Data is entered and transmitted from the remote modem which is not in digital loopback mode sent across the phone line to the local modem and looped back to the remote modem The test procedure is as follows 1 Go into Terminal mode Type AT and hit ENTER you should get an OK message 2 Dial the remote modem by entering the Dial command and the phone number to establish On Line mode 3 Type the Es
69. tting you also changed the function of DIP Switch 5 Now the UP position selects answer mode frequencies while the DOWN position selects originate mode frequencies Place DIP Switch 5 in the UP position on one of the two modems and on the other modem place Switch 5 DOWN It doesn t matter which is which just so you have local and remote modems in opposite modes NOTE The MD1600C defaults to 4 wire operation If you wish to operate over a 2 wire leased line change the setting of DIP Switch 16 to the UP position For leased lines the MD1601C operates only in 2 wire mode V 34 RACKMOUNT MODEM CARD 3 6 Modem LED Indicators The V 34 Rackmount Modem Card has ten LED diagnostic indicators as shown in Figure 3 3 OOOOOOOOOO RCV XMT CD 288 144 24 OH DTR RI OOS Qt ERR Figure 3 3 LED Diagnostic Indicators Receive Data RCV This LED blinks when data is being received on for a space off for a mark The state of this RCV LED matches that of the RCV circuit on Pin 3 of the RS 232C V 24 interface Transmit Data XMT This LED blinks when data is being transmitted on for a space off for a mark The state of this LED matches that of the XMT circuit on Pin 2 of the RS 232C V 24 interface Carrier Detect CD This LED lights when a valid carrier tone has been detected 28 800 bps 28 8 This LED is lit when the modem is connected at 28 800 bps 14 400 bps 14 4 This LED is lit when the

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