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Multi-Tech Systems MTASR3-200 User's Manual

1. 28 SOU IMG sra ddr 28 lap nue I EE 29 PXA WUD eoa E N a E 31 Spanning WES SOU Plecateeceecesasececnsssencsndescuaive hardcescadies ay cudceduuhatannssemetescnsorseutiuesaydextessecnesnivtciavepdeapacneceessaarenertenies 32 WAN POr SetiD rra proa 33 POMO PONTOS UD ss o ERE 34 Chapter 5 Remote Configuration MOUCHO siir EE 36 Modem Based Remote Configuration Procedure eene nennen nennen enn nnne 36 LAN Based Remote Configuration nissan dra 38 Windows Sockets Compliant TCP IP Stack sssssssssssssessssseeeeeneen nennen nnne enis 38 Chapter 6 Router Management gro Ur e y IPPO eU 42 Router Monado mo Wsu RI 43 BIO rU 43 Inouter Config ralo M seeni la Diada 43 WAN Device CONIQUTA MOM rr ia 45 Remote User Databas Eranio ds 45 WEB Browser Manage Macia as 46 Chapter 7 Service Warranty and Tech Support INMTOJUCUON Rer NER TEE LU E UE T 48 Bingen 48 On line Warranty Registration rote 48 A est eR 49 Recording RASFINOSFINOMAION essi a tear 49 Merc EU E 50 poudre T 50 To dog onto the Mull TechiBBS C ORO 50 ToDowalvad at decet E 50 ADQU COMPUSEIV Gs Mec EE 52 ADOUR IMONE NE EDI LIES A aia 52 About the Multi Tech F ax Baek SelViC ecce iori rero b Forth depo cc Rib AREE ria irre estudia EEEN 52 Appendices Appendix A Cabling DISOE SITIS uico re E Een aaa 54 Appendix B Senpi Language coinsiasa aiaiai ido MER REEL LEM DES 55 Appendice C Regulatory Information 22 25 23 2 020 0
2. RASFinder User Guide Introduction The following loading procedure does not provide every screen or option in the process of installing the MultiRouter software The assumption is that a technical person with a thorough knowledge of Windows and the software loading process is doing the installation Loading your Software 20 1 2 Run Windows on the PC that is connected to the Command Port of the RASFinder Insert the MultiRouter 200 Series diskette into the disk drive on the PC connected to the Command Port Win3 1 users From the File menu in Program Manager click on Run In the Run dialog box type a install or b install depending on the location of your floppy disk drive in the Command Line field and then click on OK Win95 users Click on the Start button and then click on Run In the Run dialog box click on the down arrow and choose a install and then click on OK Installing MultiRouter Mu 8 Expanding Copying Files From AN CAMTROUTERA Currently Copying None To None Choose Install to start Click on Install to continue installation at any time you may click on Abort if you wish to cancel the install Follow the on screen instructions to install your MultiRouter software The On Line Helps for the MultiRouter software provide a detailed explanation of each dialog box and each option To access the On Line Help click on the Help button in dialog box in which you woul
3. Local Area Network LAN 1 A computer network located on a user s premises within a limited geographical area Communication within a local area network is not subject to external regulations however communication across the LAN boundary may be subject to some form of regulation 2 A LAN does not use store and forward techniques 3 A network in which a set of devices are connected to one another for a communication and that can be connected to a larger network Local Access and Transport Area LATA A post divestiture geographical area generally equivalent to a Standard Metropolitan Statistical Area At divestiture the territory served by the Bell system was divided into approximately 161 LATAs The Bell Operating Companies BOCs provide Intra LATA services Local Exchange Carrier LEC The local phone company which provides local i e not long distance transmission services AKA telco LECs provide T1 or FT1 access to LDCs unless the T1 circuit is completely intra LATA Inter LATA T1 circuits are made up of a combination of Access and Long Haul facilities Local Management Interface LMI A specification for frame relay equipment that defines status information exchange Local Loop A transmission path typically twisted pair wire between an individual subscriber and the nearest public telecommunications network switching center The wires provide ISDN service but require an NT1 at the user end and an LT at the network end A
4. Ring Down Box A device that emulates a CO by generating POTS calls for testing and product demos Ring Down Circuit A tie line connecting phones where picking up one phone automatically rings another phone A feature used for emergencies to alert the person at the other phone of the incoming call RJ 11 An industry standard interface used for connecting a telephone to a modular wall outlet comes in 4 and 6 wire packages RJ 45 An 8 wire modular connector for voice and data circuits Robbed Bit Signaling The popular T1 signaling mechanism where the A and B bits are sent by each side of the T1 termination and are buried in the voice data of each voice channel in the T1 circuit Since the bits are robbed infrequently voice quality remains relatively uncompromised See bit robbing The robbed bit signaling technique is used in D4 channel banks to convey signaling information The eighth least significant bit of each of the 24 8 bit time slots is robbed every sixth frame to convey voice related signaling information such as on hook off hook etc for each channel Router A device that connects two networks using the same networking protocol It operates at the Network Layer Layer 3 of the OSI model for forwarding decisions Routing Information Protocol RIP A distance vector based protocol that provides a measure of distance or hops from a transmitting workstation to a receiving workstation RS232 C An EIA standard for a s
5. Frame Relay Implementors Forum A group of companies supporting a common specification for frame relay connection to link customer premises equipment to telco network equipment Their specification supports ANSI frame relay specs and defines extensions such as local management Frame Relay Access Device FRAD A piece of equipment that acts as a concentrator or frame assembler dissassember that can support multiple protocols and provide basic routing functions G Gateway 1 A functional unit that interconnects two computer networks with different network architectures A gateway connects networks or systems of different architectures A bridge interconnects networks or systems with the same or similar architectures 2 A network that connects hosts Graphical User Interface GUI A type of computer interface consisting of a visual metaphor of a real world scene often of a desktop Within that scene are icons representing actual objects that the user can access and manipulate with a pointing device H Handshaking A process that two modems go through at the time of call setup to establish synchronization over the data communications link It is a synchronization and negotiation process accomplished by the exchange of predefined mutually recognized control codes High level Data Link Control HDLC An ISO standard bit oriented data communications protocol that provides nearly error free data transfers Hexadecimal A base 16 n
6. A Answer n a Answer an incoming call before the final ring A Repeat Last Command n a Repeat the last command string Do not precede this command with AT Do not press ENTER to execute Bn Communication Standard Setting n 0 3 15 16 1 and 16 BO Select ITU T V 22 mode when modem is at 1200 bps B1 Select Bell 212A when modem is at 1200 bps B2 Deselect V 23 reverse channel same as B3 B3 Deselect V 23 reverse channel same as B2 B15 Select V 21 when the modem is at 300 bps B16 Select Bell 103J when the modem is at 300 bps Cn Carrier Control n 1 4 CO Transmit carrier always off Not supported C1 Normal transmit carrier switching included for backward compatibility with some software MTASR3 200 61 RASFinder User Guide Command Values Default Description Command Values Default Description Command Values Default Description Command Values Default Description Command Values Default Description Command Values Default Description 62 Ds En EO E1 Fn FO F1 Hn HO H1 10 11 12 13 14 19 111 Dial s dial string phone number and dial modifiers none Dial telephone number s where s may up to 40 characters long and include the 0 9 A B C and D characters and the L P T V W S comma semicolon and dial string modifiers Dial string modifiers L Redial last number Must be placed immediately after ATD
7. CCITT has developed modem standards that are adapted primarily by PTT post telephone and telegraph organizations that operate telephone networks of countries outside of the U S See also ITU Central Office CO The lowest or most basic level of switching in the PSTN public switched telephone network A business PABX or any residential telephone connects to the PSTN at a central office Centrex A multi line service offered by operating telcos which provides from the telco CO functions and features comparable to those of a PBX for large business users See also Private Branch Exchange Exchange MTASR3 200 71 RASFinder User Guide 72 Channel A data communications path between two computer devices Can refer to a physical medium e g UTP or coax or to a specific carrier frequency Channel Bank A device that acts as a converter taking the digital signal from the T1 line into a phone system and converting it to the analog signals used by the phone system A channel bank acts as a multiplexer placing many slow speed voice or data transactions on a single high speed link Circuit switched Network A technology used by the PSTN that allocates a pair of conductors for the exclusive use of one communication path Circuit switching allows multiple conversations on one talk path only if the end users multiplex the signals prior to transmission Circuit Switching The temporary connection of two or more communications channels u
8. Inspect the contents for signs of any shipping damage If damage is observed do not power up the unit contact Multi Tech s Technical Support for advice refer to Chapter 7 If no damage is observed place the RASFinder in its final location and perform the Installation Procedure in Table 2 1 Save the shipping box in case reshipment is necessary 16 MTASR3 200 Chapter 2 Installation Installation The installation procedure in Table 2 1 is organized so that if you need to open the RASFinder enclosure to install additional RAM you do this before you connect your cables Table 2 2 provides procedures on how to add additional RAM The installation procedure provides the cable connections for up to three WANs two types of connections for your Ethernet a short adapter cable to connect to your PC for software loading and finally your power connection Table 2 1 Installation Procedure Step Procedure 1 If one of the links needs to be changed to a V 35 interface perform the procedures in Table 2 2 2 If additional RAM is needed perform the procedures in Table 2 3 LINK3 LINKI ETHERNET COMMAND POWER E ETOO I I i i m E Power Connection o WAN Connections E E E a pai nE
9. TM R AS arr 200 Series Remote Access Device Remote Access Server with Integrated WAN Devices Model MTASR3 200 User Guide Multi lech Systems User Guide 88301100 Revision A RASFinder 200 Series Model No MTASR3 200 This publication may not be reproduced in whole or in part without prior expressed written permission from Multi Tech Systems Inc All rights reserved Copyright 1998 by Multi Tech Systems Inc Multi Tech Systems Inc makes no representations or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose Furthermore Multi Tech Systems Inc reserves the right to revise this publication and to make changes from time to time in the content hereof without obligation of Multi Tech Systems Inc to notify any person or organization of such revisions or changes Record of Revisions Revision Description A Manual revised All pages at revision A 3 23 98 Patents This Product is covered by one or more of the following U S Patent Numbers 5 301 274 5 309 562 5 355 365 5 355 653 5 452 289 5 453 986 Other Patents Pending TRADEMARK Trademark of Multi Tech Systems Inc is the Multi Tech logo RASFinder is a trademark of Multi Tech Systems Inc Windows is a registered trademark of Microsoft Corporation in the United States and other countries Multi Tech Systems Inc 2205 Woodale Drive Mounds Vi
10. of records or blocks 2 In SNA the replacement of a string of up to 64 repeated characters by an encoded control byte to reduce the length of the data stream to the LU LU session partner The encoded control byte is followed by the character that was repeated unless that character is the prime compression character 3 In Data Facility Hierarchical Storage Manager the process of moving data instead of allocated space during migration and recall in order to release unused space 4 Contrast with decompression COMx Port A serial communications port on a PC congestion A network condition where there is too much data traffic The ITU 1 233 standard defines congestion managemennt in terms of speed and burstiness congestion notification The function in frame relay that ensures that user data transmitted at a rate higher than the CIR are allowed to slow down to the rate of the available network bandwidth Consecutive Severely Errored Seconds CSES An error condition that occurs when from 3 to 9 SES Severely Errored Seconds are logged consecutively Customer Premise Equipment CPE The generic term for data comm and or terminal equipment that resides at the user site and is owned by the user with the following exclusions Over voltage protection equipment inside wiring coin operated or pay telephones company official equipment mobile telephone equipment 911 equipment equipment necessary for the provision of communications for n
11. Chapter 4 for a description of the MultiRouter software For definitions of each dialog box or fields within a dialog box refer to the on line helps provided in the software MultiRouter Router Setup x Protocol Stacks Device Drivers Other Setup Actions PPP SLIP SNMP Diagnostics Sinis Router Version 2 21 Router Status Running After you have changed the configuration of the remote RASFinder click on the Download Setup button to update the configuration The remote RASFinder will be brought down the new configuration written to the unit and the unit will reboot Click on the Exit button when the downloading is complete Click on the Router Configuration icon in the Program Manager screen to verify that the RASFinder is running 39 RASFinder User Guide 40 MTASR3 200 e TM R AS arr 200 Series Remote Access Device Chapter 6 Router Management Multi lech Systems RASFinder User Guide Introduction 42 Atypical Telnet client application and typical WEB browser management of the RASFinder are described in this chapter The RASFinder has a built in Telnet Server for access through Telnet clients A typical Telnet client is allowed to configure the RASFinder and its data ports In addition the RASFinder can be remotely accessed and configured from anywhere on the Internet through its WEB interface TcPIP For a detailed description of the MultiRouter softwar
12. Description 66 Gn GO G1 Jn JO M1 Kn K5 Nn NO N1 N2 N3 N4 N5 N7 Qn Q0 1Q1 Q2 Q3 Tn Tn Vn WO W1 Xn WO X1 C0 C1 Modem Port Flow Control n 0 0 Returns an OK for backward compatibility with some software Not supported responds ERROR Data Buffer Control n 0 0 Enable data buffer serial port speed is independent of connect speed Not supported responds ERROR Set Break Control n 5 5 Modem sends break signal received from the DTE to the remote modem Error Correction Mode Selection n 0 5 or 7 3 Non error correction mode with data buffering same as amp Q6 Direct mode MNP reliable mode V 42 MNP auto reliable mode V 42 reliable mode V 42 MNP or non error correction same as INS V 42 MNP or non error correction same as INS Local Flow Control Selection nz0 1 or3 3 Disable flow control same as amp KO XON XOFF software flow control same as amp K4 CTS only flow control Not supported responds ERROR RTS CTS hardware flow control same as amp K3 Inactivity Timer n 0 255 n a Inactivity timer setting contingent on either T value or S Register S30 value e g AT T45 amp W0 lt cr gt configures in parallel ATS30 458W0 lt cr gt and vice versa Protocol Result Code n Oor1 4 Disable protocol result code appended to DCE speed Enable protocol result code appended to DCE speed XON
13. Enabling this device driver allows for either an asynchronous or synchronous device to be connected between the end points If an asynchronous device is used the RASFinder can be used as a single port remote access server When the PPP SLIP mode is selected further configuration is required using the PPP SLIP button on the Router Setup window MTASR3 200 33 RASFinder User Guide Point to Point Setup The PPP Port Setup dialog box controls the WAN port protocol dial on demand and remote port setup The WAN port protocol can be either Point to Point Protocol PPP or Serial Line Internet Protocol SLIP Of these two protocols PPP is the more robust as it allows the end points to negotiate the use of the link and protocol parameters in a standardized way and also allows for standardized encapsulation of the packets SLIP is an older protocol which requires manual authentication using a script MultiRouter PPP Port Setup PPP is the default protocol If SLIP is to be used click on the PPP Enable option to disable PPP then select the SLIP Enable option Determine if the TCP header is going to be compressed using VJC compression If VJC compression is used select the CSLIP Van Jacobson Compression optio 34 MTASR3 200 e TM R AS arr 200 Series Remote Access Device Chapter 5 Remote Configuration Multi lech Systems RASFinder User Guide Introduction This chapter provides procedures for
14. P Pulse dial following numbers in command T Tone dial following numbers in command default V Switch to speakerphone mode and dial the following number Use ATH command to hang up W Wait for a new dial tone before continuing to dial X2 X4 X5 X6 or X7 must be selected S Dial a telephone number previously stored using the amp Zn x command see amp Zn x command for further information The range of n is 0 3 Pause during dialing for time set in register S8 Return to command mode after dialing Place at end of dial string Hook flash Causes the modem to go on hook for one half second then off hook again Wait for quiet answer Causes modem to wait for a ringback then 5 seconds of silence before processing next part of command If silence is not detected the modem returns a NO ANSWER code AT amp T s call card tones detection Disable data calling tone transmission Dial Stored Telephone Number n 0 3 none Dial a number previously stored in directory number n by the amp Znzx command Example ATDS 3 Echo Command Mode Characters n Oor1 4 Do not echo keyboard input to the terminal Do echo keyboard input to the terminal Echo Online Data Characters n 1 4 Enable online data character echo Not supported Disable online data character echo included for backward compatibility with some software Hook Control n 00r1 0 Go on hook to hang up Go off hook to make the phone line bus
15. Step Procedure 1 Ensure that the external power supply is disconnected from the RASFinder 2 Turn the RASFinder upside down and remove the cabinet mounting screw at the center back of the cabinet gt Multi e Systems W Remote Access Device Ethernet Link 1 v Tb cb Cabinet Mounting Screw amp center back Figure 2 3 Cabinet Mounting Screw 3 Turn the RASFinder right side up then slide the base out the rear of the cabinet 4 Position the base so the front panel LEDs are toward you as in Figure 2 4 5 Slantthe SIMM at a 45 angle to the back of the base and align the centering notch of the SIMM with the center tab on the SIMM connector 6 Gently press down on the ends of the SIMM until the two short vertical white pins enter the holes at the ends of the SIMM and the two metal side clips snap in place over the SIMM locking it down oe WNNNNNNNM o E N D E A ON wn ee V um V um mim ANNA SS gt LEDs Figure 2 4 Installing a SIMM 7 Align the base with the mating guides on the inside of the cabinet then slide the base all the way into the cabinet until it stops 8 Turn the RASFinder upside down and replace the cabinet mounting screw that was removed in step 2 9 Turn the RASFinder right side up and return to Table 2 1 to connect the cables MTASR3 200 TM R AS arr 200 Series Remote Access Device Chapter 3 Software Loading and Configuration Multi lech Systems
16. The special cable is a serial cable with male connectors on both ends Refer to Appendix A for for cable details Connect the modem to your local telephone line Provide your telephone number to the person verifying your configuration 3 Atthe main site connect your local PC to a modem that is connected to a dial up line 4 Install the MultiRouter software on the local PC and start the Configuration Port Setup program Windows 3 1x double click on the Configuration Port Setup Icon in the MultiRouter program group Windows 95 Click on Start gt gt Programs gt gt MultiRouter gt gt Configuration Port Setup 5 The MultiRouter Setup dialog box is displayed MultiRouter Port Setup Select Port Router IP Address coM2 y 200 2 9 1 E Modem Setup Init String jarso i amp EssspiS2008W Init Response 0K Dial String SS Connect Response CONNECT HangupSting 774e777ATHO oo E El Ir E a NOTE If there is a Dial String specified in Modem Setup Configuration programs will try to initialize modem and dial this string Verify that the Communication Type field is set for Com port and the Select Port field is set for the Com port of your local PC In the Dial String field enter the AT command for dialing ATDT plus the phone number of the remote RASFinder MTASR3 200 10 11 12 13 14 Chapter 5 Remote Configuration If your Modem Initializa
17. XOFF Pass Through n 00r1 0 Respond to and discard XON XOFF characters Not supported responds ERROR Data Calling Tone n 00r1 0 Disable V 25 data calling tone Enable V 25 data calling tone MTASR3 200 Command B Values Description Command Cn Values Default Description CO C1 Command ES 6 Values Description Command amp amp S Values Description Appendices View Numbers in Blacklist n a If blacklisting is in effect this command displays the numbers for which the last call attempted in the previous two hours failed In countries that do not require blacklisting the ERROR result code appears Data Compression Conirol n Oor1 4 Disable V 42bis MNP 5 data compression Enable V 42bis MNP 5 data compression Enable Synchronous Buffered Mode n a Allows an H 324 video application direct access to the synchronous data channel On underflow the modem sends HDLC flag idle 0x7E to the remote modem This special error correction mode is overridden by any of the following commands amp F M amp Q and IN ES shows the only allowed value Speaker Codec Loopback n a Provides a loopback from the microphone to the speaker For testing and debugging only Command T94 Testing External RAM Values Description n a This command is used for testing the external RAM Enter AT T94 lt cr gt to determine the status of external RAM The response you should receive will be eith
18. a DB25 female connector WAN Links Three internal K56flex modems Electrical Physical Voltage 115 VAC Standard 240 VAC Optional Frequency 47 to 63 Hz Power Consumption 10 Watts Dimensions 1 625 high x 6 wide x 9 deep 5 63 cm high x 22 34 cm wide x 33 51 cm deep e Weight 2 pounds 0 92 kg Requirement e PC with Windows 3 1x or Windows 95 and one serial comm port to connect to the Command Port of the RASFinder Though this modem is capable of 56K bps download performance line impairments public telephone infrastructure and other external technological factors currently prevent maximum 56K bps connections 14 MTASR3 200 d TM R AS arr 200 Series Remote Access Device Chapter 2 Installation Multi lech Systems RASFinder User Guide Introduction This chapter is organized in the way you will unpack and cable your RASFinder The unpacking section describes the contents of the shipping box and shows how the RASFinder is packaged The installation procedure describes each cable connection and shows where that cable is connected to the RASFinder If additional RAM is needed on your RASFinder a detailed procedure is provided describing how to install a second SIMM Unpacking The shipping box contains the RASFinder external power supply a plastic bag containing cables your Quick Start Guide and two diskettes i e the RASFinder 200 Series User Guide and the MultiRouter Software
19. a emu ultiModem eres WAN 2 Speed Modem Type Ee 115200 MultiModem ZDX Seri IX As Fundas 2 ultiModem eries 2 X Direct Connect 7 Leased Line Answering Dial Number WAN 3 IX Enable Speed Modem Type IX Asynchronous 115200 amp MumiModem ZDX Series El X Direct Connect Leased Line Answering Dial Number 21 The WAN Ports Default Setup dialog box is displayed with all the WAN Ports enabled Asynchronous mode enabled the speed set at 115200 and the Modem Type defaulted to Socket Modem K56flex Each WAN port can be configured independently e g one can dial a specific number another could answer a call and the third could dial a different number If WAN 1 is being set up to answer a call click on the Answering option and then click on the Direct Connect Leased Line option to disable the Direct Connect Leased Line option If WAN 1 is being set up to make a call click on the Direct Connect Leased Line option to disable that option and enter the telephone number to be dialed in the Dial Number field The Speed and Modem type should remain at 115200 and Socket Modem K56flex If either selection needs to be changed click on the down arrow and click on your new selection 22 Repeat the above step for WAN 2 and WAN 3 23 Click on OK when you are satisfied with your selections The WAN port can be further configured once the installation of the software is completed by clicking o
20. by AT amp T and on an intra LATA basis by the BOCs Data Service Unit DSU A device that provides a digital data service interface directly to the data terminal equipment The DSU provides loop equalization remote and local testing capabilities and a standard EIA CCITT interface Dedicated Line A communication line that is not switched The term leased line is more common Default This is a preset value or option in software packages or in hardware configuration that is used unless you specify otherwise Device driver Software that controls how a computer communicates with a device such as a printer or mouse Digital Cross connect System DCS The CO device which splits and redistributes the T1 bandwidth the DCS takes time slots from various T1 lines and alters them to provide the needed connectivity DCS connections are made with software at an administrator s workstation Digital Data Information represented by discrete values or conditions contrast Analog Data Digital Loopback A technique used for testing the circuitry of a communications device Can be initiated locally or remotely via a telecommunications device The tested device decodes and encodes a received test message then echoes the message back The results are compared with the original message to determine if corruption occurred en route Digital PBX A Private Branch Exchange that operates internally on digital signals See also Exchange Dig
21. complete address MTASR3 200 81 RASFinder User Guide 82 W Wide Area Network WAN 1 A network that provides communication services to a geographic area larger than that served by a local area network or a metropolitan area network and that may use or provide public communication facilities 2 A data communications network designed to serve an area of hundreds or thousands of miles for example public and private packet switching networks and national telephone networks Contrast with local area network LAN Wide Area Telecommunications Service WATS A low cost toll service offered by most long distance and local phone companies Incoming 800 call service or IN WATS and outgoing WATS are subscribed to separately but over the same line X X 25 ITU T s definition of a three level packet switching protocol to be used between packet mode DTEs and network DCEs X 25 corresponds with layer 3 of the 7 layer OSI model Y Yellow Alarm An error indication sent by the T1 device when it has not gotten a receive signal or cannot synchronize on the receive signal received Contrast Red Alarm and Blue Alarm Z Zero Byte Time Slot Interchange ZBTSI A method for allowing 64K bps unrestricted user data allowing all Os in the user data An alternative to but not as popular as B8ZS MTASR3 200
22. download 8 When the download is complete press ENTER to return to the File Menu 9 To exit the BBS type G and press ENTER MTASR3 200 51 RASFinder User Guide About CompuServe In addition to the BBS Multi Tech provides support through CompuServe s Modem Vendor Forum GO MODEMVEN Refer to your Compuserve documentation for special operating procedures About the Internet If you prefer to receive technical support via the Internet you can contact Tech Support via e mail at the following address hitp www multitech com _forms email_tech_support him Multi Tech s presence includes a Web site at http www multitech com and an ftp site at ftp ftp multitech com The ftp server mirrors the Multi Tech BBS About the Multi Tech Fax Back Service 52 Multi Tech s fax back system provides 24 hour access to sales marketing and technical literature Dial 612 717 5888 follow the voice prompts and request document number 10 for a catalog of available documents For convenience have your fax number handy From the catalog of available documents you can order newsletters white papers press releases etc from the sales and marketing index pages 1 4 or order basic modem operation and troubleshooting guides from the technical support and engineering index Just enter the applicable FB Doc from the left column of the catalog MTASR3 200 TM R AS arr 200 Series Remote Access Device Appendices Multi l
23. of two B channels each at 64K bps and one D channel at 64K bps 2B D Bell Operating Companies BOC The family of corporations created during the divestiture of AT amp T BOCs are independent companies which service a specific region of the US Also called Regional Bell Operating Companies RBOCs Bell Pub 41450 The Bell publication defining requirements for data format conversion line conditioning and termination for direct DDS connection Bell Pub 62310 The Bell publication defining requirements for data format conversion line conditioning and termination for direct DDS connection Binary Synchronous Communication BSC A form of telecommunication line control that uses a standard set of transmission control characters and control character sequences for binary synchronous transmission of binary coded data between stations Bit Binary diglT A bit is the basis of the binary number system It can take the value of 1 or 0 Bits are generally recognized as the electrical charge generated or stored by a computer that represent some portion of usable information Bit Error Rate Test BERT A device or routine that measures the quality of data transmission A known bit pattern is transmitted and the errors received are counted and a BER bit error rate is calculated The BER is the ratio of received bits in error relative to the total number of bits received expressed in a power of 10 Bit robbing The use of the least significan
24. remote access and the terminal server application is enabled MTASR3 200 Chapier 4 MultiRouter Software IPX Setup The IPX Virtual Port Setup dialog box is used to control the four frame types and set up the three WAN ports of the RASFinder The Advanced button opens an IPX General Setup window used to enable or disable IPX routing and auto learn of Ethernet network numbers also the distributed name of the RASFinder can be designated here MultiRouter IPX Virtual Port Setup x TYPE Il WAN1 WAN 2 Broadcast Interval 60 Network Aging Timer fi 80 Auto Learn Transport Time fi NetbIOS SAP X Enable Broadcast Interval 60 Hops 8 Aging Timer 180 Bandwidth Optimization X Periodic RIP IX Periodic SAP X Discard Serialization Packets X IPX Watchdog Spoofing X SPX Watchdog Spoofing For most applications the RIP and SAP default timers should not have to be changed Under certain circumstances disabling IPX and SPX Watchdog Spoofing in the Bandwidth Optimization group has proven effective The IPX WAN Setup windows allow you to enable or disable IPX routing on the WAN ports change the network numbers for the WAN ports change the default RIP and SAP timers and optimize the bandwidth The IPX WAN network number has to be the same on both ends of the link and must be unique throughout the internetwork If a WAN port is configured in a point to point operation both WAN network number
25. starts out with statements about your RASFinder 2 year warranty The next section Tech Support should be read carefully if you have questions or problems with your RASFinder It includes the technical support telephone numbers space for recording your product information and an explanation of how to send in your RASFinder should you require service The next three sections explain how to use our bulletin board service BBS and get support through CompuServe and the Internet The final section explains how to obtain a catalog of available documents and then order technical literature using our 24 hour Fax Back Service Limited Warranty Multi Tech Systems Inc MTS warrants that its products will be free from defects in material or workmanship for a period of two years from the date of purchase or if proof of purchase is not provided two years from date of shipment MTS MAKES NO OTHER WARRANTY EXPRESSED OR IMPLIED AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FORA PARTICULAR PURPOSE ARE HEREBY DISCLAIMED This warranty does not apply to any products which have been damaged by lightning storms water or power surges or which have been neglected altered abused used for a purpose other than the one for which they were manufactured repaired by the customer or any party without MTS s written authorization or used in any manner inconsistent with MTS s instructions MTS s entire obligation under this warranty shall be lim
26. the installation is complete To configure your RASFinder a series of default dialog boxes MultiRouter Novell IPX Protocol Default Setup MultiRouter IP Protocol Default Setup MultiRouter WAN Port Default Setup will be displayed MultiRouter Novell IPX Protocol Default Setup Ix PX Routing Enable Router Name MTROUTER Ethernet WAN 1 Auto Learn Network Numbers Yes C No E Enable Network number 05500111 RAW 802 3 Frames WAN 2 X Enable Network number Auto Learn E Enable Network number 06500111 LLC 802 2 Frames WAN 3 FR Enable Network number Auto Learn E Enable Network number 07500111 TYPE Il Frames o EE SNAP Frames X Enable Network number Auto Learn If your network protocol is IPX continue with the following steps If your network protocol is IP click on the IPX Routing Enable check box to disable IPX then click on the OK button and proceed to step 14 10 Router Name You can either use the default Router Name or assign a new Router Name in this field If you assign a new Router Name it must be a printable ASCII string of a maximum of 47 characters The router name is used by the RASFinder to advertise its service in the IPX inter network MTASR3 200 21 RASFinder User Guide 11 13 14 16 17 18 19 20 22 Ethernet You can enable Auto Learn Network Numbers by leaving the default Ye
27. used in communications and in many computers and terminals The code is used to represent numbers letters punctuation and control characters The basic ASCII code is a 7 bit character set which defines 128 possible characters The extended ASCII file provides 255 characters Asynchronous Transfer Mode ATM A very high speed method of transmission that uses fixed size cells of 53 bytes to transfer information over fiber also known as cell relay AT Commands A standard set of commands used to configure various modem parameters establish connections and disconnect The AT is used to get the attention of the modem before the actual command is issued Availability The measure of the time during which a circuit is ready for use the complement of circuit outage 10096 minus outage available B B7ZS Bipolar 7 Zero Suppression line coding One method of T1 line coding see also B8ZS and AMI B7ZS line coding does not place restrictions on user data AMI does B8ZS Bipolar 8 Zero Suppression line coding One of two common methods of T1 line coding with AMI B8ZS line coding does not place restrictions on user data AMI does A coding method used to produce 64K bps clear transmission See also B7ZS and AMI line coding Backbone 1 A set of nodes and their interconnecting links providing the primary data path across a network 2 In a local area network multiple bridge ring configuration a high speed link
28. 00 43 RASFinder User Guide Applications The Applications option on the Router Configuration menu allows you to enable or disable various types of servers Choosing the Applications option Option 4 in the Router Configuration menu displays the Applications Menu Telnet 200 2 9 6 5 Applications 5 Sustem Information Enter Vour Choice 1 to 5 exit or ESC to Preuious menu lt lt Applications Menu gt gt 1 TFTP Server 2 Telnet Server 3 AG Server 4 Terminal Server 5 Dumb TTY 6 Router Password Enter Your Choice 1 to 6 exit or ESC to Previous menu 1 lt lt TFTP Server Menu gt gt 1 TFTP Server enabled Go back to Router Management menu to save changes Enter your choice 1 exit or ESC to Previous menu 41 2 The Applications Menu displays six server options and allows the user to enable or disable the Servers as necessary Initially all the server options are enabled To then disable a given type of server choose the server option number and hit the Enter key then choose option 2 to disable it After all selections are made the user can return to the Router Management Menu by pressing the Escape Esc key several times during which the changes are saved To re enable one of the server types choose its option number and hit the Enter key then choose option 1 to enable it Following are descriptions of each server type and its use TFTP Server The TF
29. ASFinder Please note the type of external link device that is connected to your RASFinder before calling tech support Also note the status of your RASFinder including LED indicators screen messages diagnostic test results DIP Switch settings problems with a specific application etc Use the space below to note the RASFinder status MTASR3 200 49 RASFinder User Guide Service If your tech support specialist decides that service is required your RASFinder may be sent freight prepaid to our factory Return shipping charges will be paid by Multi Tech Systems Include the following with your RASFinder e adescription of the problem e return billing and return shipping addresses contact name and phone number e check or purchase order number for payment if the RASFinder is out of warranty Check with your technical support specialist for the standard repair charge for your RASFinder if possible note the name of the technical support specialist with whom you spoke If you need to inquire about the status of the returned product be prepared to provide the serial number of the product sent Send your RASFinder to this address MULTI TECH SYSTEMS INC 2205 WOODALE DRIVE MOUNDS VIEW MINNESOTA 55112 ATTN SERVICE OR REPAIRS You should also check with the supplier of your RASFinder on the availability of loaner units and or local service in your area The Multi Tech BBS For customers who do not have Internet acc
30. C and service order codes SOC are shown An FCC compliant telephone cord with modular plug is provided with this equipment This equipment is designed to be connected to the telephone network or premises wiring using a compatible modular jack which is Part 68 compliant See installation instructions for details 3 The ringer equivalence number REN is used to determine the number of devices which may be connected to the telephone line Excessive REN s on the telephone line may result in the devices not ringing in response to an incoming call In most but not all areas the sum of the REN s should not exceed five 5 0 To be certain of the number of devices that may be connected to the line as determined by the total REN s contact the telephone company to determine the maximum REN for the calling area 4 If this equipment causes harm to the telephone network the telephone company will notify you in advance that temporary discontinuance of service may be required But if advance notice isn t practical the telephone company will notify the customer as soon as possible Also you will be advised of your right to file a complaint with the FCC if you believe it is necessary MTASR3 200 57 RASFinder User Guide 5 The telephone company may make changes in its facilities equipment operations or procedures that could affect the operation of the equipment If this happens the telephone company will provide advance notice in order for you to
31. Cost Port 4 State forwarding M Cost A000 M With Spanning Tree bridging the RASFinder defaults with one logical WAN port mapped to a DLCI and set for forwarding Any other WAN ports should be set for blocking When it is required the RASFinder will make the transition from blocking to forwarding automatically 32 MTASR3 200 Chapier 4 MultiRouter Software WAN Port Setup The WAN Port Setup dialog box controls how each WAN port is configured If a port is configured for point to point operation then the mode can be either synchronous or asynchronous If the mode is asynchronous then the connection method can be either Answering or Dialing If the connection method is dialing then a number to be dialed has to be entered in the Dial Number field and the correct modem type designated in the Modem Types field WAN 1 qi Speed Modem Type KA h 115200 MultiModem ZDX Series B i Answering Dial Number WAN 2 Speed Modem Type X Enable X Asynchronous 115200 MultiModem ZDX Series j X Direct Connect Leased Line Answering Dial Number WAN 3 X Enable Speed Modem Type X Asynchronous 115200 MultiModem ZDX Series 3 X Direct Connect Leased Line Answering Dial Number If the PPP SLIP mode is selected the RASFinder is configured for point to point operation in which data packets are transferred between two end points
32. Enabled This parameter is of use in dial in applications where the user is required to be called back at a specific number Enabling this parameter results in having the administrator assigning the callback parameters Leave this function disabled if the user is to be allowed to choose the call back number and the call back delay Call Back Number The call back number field is editable only if call back security is enabled checked This is the number where the user will be called back If call back security is enabled the user cannot choose the call back number Call Back Delay Call back delay is editable only if call back security is enabled This specifies the duration after which this user will be called back at the administrator assigned phone number Protocols This lets you select the protocol s in which the user is allowed to dial into the RASFinder Dial In Ports This allows you to select the port over which the user is permitted to dial into the RASFinder Dial Out Ports This allows you to select the port over which the user is permitted to dial out from the RASFinder 4 After each user is defined on the Add Users screen click on the OK button to display the updated Users List dialog box Click on the Add User button to continue adding users to your database 5 When you have added all your users to the database from the Users List dialog box click on the Download button to load the database into the MultiRouter MTA
33. Handshake n 00r1 4 Modem performs handshake only at communication standard specified by S37 and the B command Modem begins handshake at communication standard specified by S37 and the B command During handshake fallback to a lower speed can occur Return Online to Data Mode 0 1 3 None Exit online command mode and return to data mode Issue a retrain and return to online data mode Issue a rate renegotiation and return to data mode Result Codes Enable Disable n 00r1 0 Enable result codes Disable result codes Set Register Value r S register number n varies None Set value of register Srto value of n where n is entered in decimal format Read Register Value r S register number None Read value of register Sr and display value in 3 digit decimal form Result Code Format n Oor1 4 Displays result codes as digits terse response Displays result codes as words verbose response 63 RASFinder User Guide 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 Command Values Default Description Xn X0 X1 X2 X3 X4 X5 X6 X7 YO Y1 Zn ZO Zi amp Bn amp BO amp B1 amp Cn amp CO amp C1 amp Dn amp DO a
34. I E PC comeco Us Ethernet Connection Figure 2 2 Back Panel Connections 3 Connect the RASFinder to a PC using the short RJ45 to DB25 female cable provided with your unit Plug the RJ45 end of the cable into the Command Port of the RASFinder and the other end into the PC s serial port or RS232 cable from the PC serial port See Figure 2 2 4 To make the network connection connect either an RJ45 UTP cable to the 10 BASE T connector shown in Figure 2 2 or a Coax BNC cable to the 10 BASE 2 connector on the back of the RASFinder Connect the other end of the cable to your LAN 5 Connect one end of an RJ11 cable to each of the LINK Connectors on the RASFinder labeled LINK 1 LINK 2 and LINK 3 and connect the other end to the phone jacks as shown in Figure 2 2 6 Connect one end of the power supply to a live AC outlet then connect the other end to the RASFinder as shown in Figure 2 2 The power connector is a 6 pin circular DIN connector 7 Turn on power to the RASFinder by setting the ON OFF switch on the back panel to the ON position At this time your RASFinder is completely cabled Proceed to the next section to load the MultiRouter software MTASR3 200 17 RASFinder User Guide Adding Additional RAM 18 Asecond SIMM connector is provided for adding additional RAM to the RASFinder The procedure for adding additional RAM is provided in Table 2 2 Table 2 2 Adding Additional RAM Procedure
35. KA loop or subscriber loop Logical Link Control LLC2 In a local area network the protocol that governs the exchange of transmission frames between data stations independently of how the transmission medium is shared The LLC2 protocol was developed by the IEEE 802 commitee and is common to all LAN standards Logical Unit LU A type of network accessible unit that enables end users to gain access to network resources and communicate with each other Long Haul The T1 element that connects to the Access portion of the long distance company s LDC s central office The LDC is commonly called the point of presence POP Each LDC has a number of POPs located throughout the country The LDC is also called an IEC Inter Exchange Carrier MTASR3 200 Glossary Long Haul Communications The type of phone call reaching outside of a local exchange LE Management Information Base MIB A database of network management information used by the Common Management Information Protocol CMIP and the Simple Network Management Protocol SNMP Megacom An AT amp T service with a normal WATS line typically T1 between the customer premise and the AT amp T serving class 4 CO are the customer s responibility MegaLink BellSouth s leased T1 service Message Associated with such terms as packet frame and segment 1 In information theory an ordered series of characters intended to convey information 2 An assembly of characters and s
36. Manager WAN Device Configuration 1 object s selected 325 bytes YA Win95 users From your desktop click on the Start button point to Programs then MultiRouter and then click on Remote User Data Base The Users List dialog box is displayed Number Of Users 0 2 Click on the Add User button and the Add Users dialog box is displayed MultiRouter Users Add x User Name tis protocol User Password NENNEN Ix IP Call Back x IPX Call Back Call Back Security Enabled 9 Des Call Back Number Call Back Delay i0 Secs Dial In Ports Dial Out Ports WAN Porti WAN Porti WAN Port2 WAN Port2 WAN Port3 WAN Port3 24 MTASR3 200 Chapter 3 Software Loading and Configuration 3 Build your user database by filling in the following fields for each user User Name The User Name can have as many as 39 characters All printable characters are permitted with the restriction that no blanks are allowed in the user name In dial in and dial out applications the user name is treated as a case insensitive string User Password The User Password can have as many as 7 characters In places where the password is used as a character string it is treated as a case insensitive string Elsewhere PPPs CHAP it is treated as a case sensitive pattern Call Back You have to click this check box in order to access the following three Call Back functions Call Back Security
37. P Port Setup dialog box allows you change the IP routing capabilities add or delete logical WANs enable the DHCP server assign DNS address and define default routes The initial routing capabilities were established during the software installation You can change IP routing parameters by clicking on the Advanced tab and changing for example the RIP Response Time or RIP Route Aging Time The WAN tab allows you to change the WAN port IP address the remote address and if logical WAN ports are being added for frame relay you can add them by clicking on the Add button The Ethernet IP Setup dialog box displays the parameters for your Ethernet port with the IP Address and IP Mask established during the initial loading of the software MultiRouter IP Port Setup Xx X ip Port Enable Port Address E Pointto Point Link IP Address 200 2 15 1 Frame Type IP Mask 255 255 255 0 vec ET rRemote Address Metric fi IP Address 0 0 0 0 Advanced Support IX Proxy ARP IX ICMP Mask Reply X ICMP Redirect X RIP Poison Reverse x RIP An IP address is a combination of a network number and a host number or ID IP address masks are used to specify the network or subnet portion of the IP address IP addresses and masks are 32 bit values These are usually provided in what is known as the dotted decimal notation In this notation each 8 bit portion of the address is given a decimal quantity separated by a dot For exampl
38. SR3 200 25 RASFinder User Guide 26 MTASR3 200 e TM R AS arr 200 Series Remote Access Device Chapter 4 MultiRouter Software Multi lech Systems RASFinder User Guide Introduction This chapter describes the RASFinder s MultiRouter software from an applications standpoint showing how to make changes in the configuration with recommendations on the impact of any such changes The major configuration parameters were set when the software was loaded into your PC and the setup configuration was downloaded to the RASFinder at the conclusion of the software installation The MultiRouter software is designed for the Microsoft Windows environment Recommendations are provided to explain that changing parameters may affect your unit in a certain way Our intent is not to cover every dialog box and every option because the Router Setup Help system provides that information The Help menus define each button option field and provide recommend values where applicable This constitutes a dynamic help system in that the information presented always relates to the dialog box or window that is currently open Before You Begin To view or change your MultiRouter configuration in Windows 95 click on the Start button point to Programs then MultiRouter and click on Router Configuration You can also start the Router Configuration from My Computer by selecting the following folders in turn Windows Start Menu Programs MultiRou
39. TP server is used for transferring configuration and firmware updates across the IP internetwork TFTP is a file transfer protocol that uses User Datagram Protocol UDP to provide a simple method for transferring files between two nodes server and client Telnet Server The Telnet server allows an authorized Telnet client to remotely access the Telnet server to dial out view router configuration and statistics or modify the router configuration or remotely modify the user database Async Gateway AG Server The AG server is a communications gateway for dial up communications The Telnet client can remotely gain access to the server and control the ports Terminal Server The Terminal server allows an incoming call from a terminal dumb or intelligent to be connected to a Telnet server Dumb TTY The Dumb TTY allows a remote user to connect to the RASFinder s command port for configuration and management of the RASFinder 44 MTASR3 200 Chapter 6 Router Management WAN Device Configuration The WAN Device Configuration option Option 3 on the Router Management Menu allows a remote user to gain access to any available WAN port on the RASFinder The user can select either Port 1 Port 2 or Port 3 depending on what port s are currently available Telnet 200 2 9 6 Ic x lt lt Router Management Menu gt gt 1 Dial out 2 Router Configuration 3 WAN Device Configuration 4 Remote User Database Esc Cl
40. Users should not attempt to make such connections themselves but should contact the appropriate electric inspection authority or electrician as appropriate This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulation of the Canadian Department of Communications 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 B prescrites dans le R glement sur le brouillage radio lectrique dict par le minist re des Communications du Canada Ringer Equivalence Number Notice The ringer equivalence number REN asigned to each terminal device provides an indication of the maximum number of terminals allowed to be connected to a telephone interface The termination on an interface may consist of any combination of devices subject only to the requirement that the sum of the ringer equivalence numbers of all the devices does not exceed 5 MTASR3 200 59 RASFinder User Guide European Community Directives The CE mark is affixed to the enclosed MultiTech product to confirm compliance with the following European Community Directives Council Directive 89 336 EEC of 3 May 1989 on the approximation of the laws of Member States relating to electromagnetic compatibility and Council Directive 73 23 EEC of 19 February 1973 on the harmonization of the laws of Member Sta
41. ager screen run the Configuration Port Setup program Windows 3 1x double click on the Configuration Port Setup Icon in the MultiFRAD program group Windows 95 Click on Start gt gt Programs gt gt MultiRouter gt gt Configuration Port Setup 3 TheMultiRouter Port Setup dialog box is displayed Communication Type Select Port Router IP Address cow2 y pou231 El Modem Setup Init String ATS0 14E5 5B192008W ok Init Response OK Lio Dial String FY Connect Response CONNECT Hangup String rr TA TH NOTE If there is a Dial String specified in Modem Setup Configuration programs will try to initialize modem and dial this string Verify that the Communication Type field is set to IP In the Router IP Address field enter the IP Address of the remote RASFinder 4 Click on OK when you are satisfied with your selections The Windows Program Manager menu is displayed 5 Double click on the Router Configuration icon The Reading Setup dialog box is displayed MultiRouter Reading Setup Date Stamp Feb 6 1998 Size bytes 36072 Checksum 0x1B18 38 MTASR3 200 6 MTASR3 200 Chapter 5 Remote Configuration The MultiRouter Setup dialog box is then displayed This is the dialog box of the remote RASFinder You can select any of the Protocol Stacks Device drivers or other buttons and change the configuration of the remote RASFinder Refer to
42. am currently running on and in control of the PC screen and keyboard The area of the screen that occupies the active window Compare with background Fractional T1 FT1 A digital data transmission rate between 56K bps DSO rate and 1 544M bps the full T1 rate in North America FT1 is typically provided on 4 wire two copper pairs UTP Often used for video conferencing imaging and LAN interconnection due to its low cost and relatively high speed FT1 rates are offered in 64K bps multiples usually up to 768K bps Frequency A characteristic of an electrical or electronic signal which describes the periodic recurrence of cycles Frequency is inversely proportional to the wavelength or pulse width of the signal i e long wavelength signals have low frequencies and short wavelength signals yield high frequencies Foreign Exchange FX A CO trunk with access to a distant CO allowing ease of access and flat rate calls anywhere in the foreign exchange area Foreign Exchange Office FXO provides local telephone service from a CO outside of foreign to the subscriber s exchange area In simple form a user can pick up the phone in one city and receive a tone in the foreign city Connecting a POTS telephone to a computer telephony system via a T1 link requires a channel bank configured for the FX connection To generate a call from the POTS set to the computer telephony system a FXO connection must be configured Foreign Exchange Stat
43. ational defense or multiplexing equipment used to deliver multiple channels to the customer D D4 the T1 4th generation channel bank D4 channelization Refers to the compliance with AT amp T TR 62411 for DS1 frame layout D4 framing The T1 format for framing in AT amp T D Series channel banks in which there are 12 separate 193 bit frames in a super frame A D4 framing bit is used to identify the channel and the signaling frame Signalling for voice channels is carried in band for every channel along with the encoded voice See robbed bit signaling Data Communications Equipment DCE Any device which serves as the portal of entry from the user equipment to a telecommunications facility A modem is a DCE for the telephone network PSTN that is commonly on site at the user s premises Packet Switched Networks have another level of DCE which is most often located at a central office Data Link Connection Identifier DLCI One of the six components of a frame relay frame Its purpose is to distinguish Separate virtual circuits across each access connection Data coming into a frame relay node is thus allowed to be sent across the interface to the specified address The DLCI is confirmed and relayed to its destination or if the specification is in error the frame is discarded MTASR3 200 Glossary Dataphone Digital Service DDS A private line digital service that offers 2400 4800 9600 and 56K bps data rates on an inter LATA basis
44. ations a technique in which pulse code modulation samples are compressed before they are stored on a disk ADCPM an extension of the PCM format is a standard encoding format for storing audio information in a digital format It reduced storage requirements by storing differences between successive digital samples rather than full values Address A numbered location inside a computer It s how the computer accesses its resources like a video card serial ports memory etc AMI line coding One of two common methods of T1 line coding with B8ZS AMI line coding places restrictions on user data B8ZS does not Analog signal A waveform which has amplitude frequency and phase and which takes on a range of values between its maximum and minimum points Analog Transmission One of two types of telecommunications which uses an analog signal as a carrier of voice data video etc An analog signal becomes a carrier when it is modulated by altering its phase amplitude and frequency to correspond with the source signal Compare with digital transmission Application Program Interface API A software module created to allow dissimilar or incompatible applications programs to transfer information over a communications link APIs may be simple or complex they are commonly required to link PC applications with mainframe programs ASCII American Standard Code for Information Interchange pronounced askey A binary code for data that is
45. ce on each computer and hardware device IP addresses are 32 bits long and come in two types network and host Network addresses come in five classes A B C D and E Each class of network address is allocated a certain number of host addresses For example a class B network can have a maximum of 65 534 hosts while a class C network can have only 254 The class A and B addresses have been exhausted and the class D and E addresses are reserved for special use Consequently companies now seeking an Internet connection are limited to class C addresses Early IP implementations ran on hosts commonly interconnected by Ethernet local area networks LAN Every transmission on the LAN contains the local network or medium access control MAC address of the source and destination nodes The MAC address is 48 bits in length and is non hierarchical MAC addresses are never the same as IP addresses When a host needs to send a datagram to another host on the same network the sending application must know both the IP and MAC addresses of the intended receiver Unfortunately the IP process may not know the MAC address of the receiver The Address Resolution Protocol ARP described in RFC 826 located at ftp ds internic net rfc rfc826 txt provides a mechanism for a host to determine a receiver s MAC address from the IP address In the process the host sends an ARP packet in a frame containing the MAC broadcast address and then the ARP request adver
46. ch as ATM frame relay and SMDS See also T Carrier T1 line and FT1 T1 Channel Tests A set of diagnostics that vary by carrier used to verify a T1 channel operation Can include Tone Noise Level Impulse Noise Level Echo Cancelers Gain and Crosstalk testing T1 Framing To digitize and encode analog voice signals requires 8000 samples per second twice the highest voice frequency of 4000 Hz Encoding in an 8 bit word provides the basic T1 block of 64K bps for voice transmission This Level 0 Signal as its called is represented by DS 0 or Digital Signal at Level 0 24 of these voice channels are combined into a serial bit stream using TDM on a frame by frame basis A frame is a sample of all 24 channels so adding in a framing bit gives a block of 193 bits 24x8 1 193 Frames are transmitted at 8000 per second the required sample rate creating a 1 544M 8000x193 1 544M transmission rate T1 Line A digital communications facility that functions as a 24 channel pathway for data or voice transmission A T1 line is composed of two separate elements the Access element and the Long Haul element T1 Mux A device used to carry many sources of data on a T1 line The T1 mux assigns each data source to distinct DSO time slots within the T1 signal Wide bandwidth signals take more than one time slot Normal voice traffic or 56 64K bps data channels take one time slot The T1 mux may use an internal or external T1 DSU a channel bank d
47. ch the BER is less than 1x10 3 Signaling The process of establishing maintaining accounting for and terminating a connection between two endpoints e g the user premises and the telco CO Central office signals to the user premises can include ringing dial tone speech signals etc Signals from the user s telephone can include off hook dialing speech to far end party and on hook signals In band signaling techniques include pulse and tone dialing With common channel signaling information is carried out of band MTASR3 200 79 RASFinder User Guide 80 Simple Network Management Protocol SNMP TCP IP protocol that allows network management Simultaneous Voice Data SVD A technology for letting a user send data via a modem and use a handset to talk to another user at the same time over the same connection The alternative making a second call can be expensive or even impossible The uses for SVD are telecommuting videoconferencing distant learning tech support etc Stop Bit One of the variables used for timing in asynchronous data transmission Depending on the devices each character may be trailed by 1 1 5 or 2 stop bits Superframe D4 A T1 transmission format that consists of 12 DS1 frames or 2316 bits A DS1 frame consists of 193 bit positions A frame overhead bit is in the first position and it is used for frame and signaling phase alignment only Subscriber Loop See Local loop Switched 56 A circu
48. changing the configuration of a remote unit Remote configuration allows a PC at one site local site to dial a remote RASFinder and change the configuration of that remote unit Remote configuration can be accomplished either directly through the LAN or remotely using modems To remotely configure a RASFinder a local PC needs to be connected to a dial up line and the MultiRouter software configured to call the remote RASFinder The remote RASFinder needs to have a modem connected to a dial up line and the Command Port Once the connection to the remote unit is made you can change the configuration as you see fit Once the configuration is changed you can download the new configuration to the remote RASFinder Refer to the Modem Based Remote Configuration Procedure in this chapter to remotely configure a RASFinder To configure the remote RASFinder through the LAN change the communication type to the IP based Trivial File Transfer Protocol known as TFTP and change the configuration as you see fit Refer to the LAN Based Remote Configuration Procedure in this chapter to configure a remote RASFinder Modem Based Remote Configuration Procedure 36 1 Atthe remote site remove the serial cable from the PC to the Command Port connector on the back panel of the RASFinder 2 Atthe remote site connect a special cable Remote Configuration Cable to the Command Port connector on the back panel of the RASFinder and the RS232 connector on the modem
49. d like addtional information The Expanding Copying Files From dialog box is displayed You can view the progress of the installation from this dialog box You can click on Abort at any time to cancel the install Installing MultiRouter Multi oc Systems Expanding Copying Files From AN To CAMTROUTERY Currently Copying AAMTR2 21 BI To C MTROUTER MTR221 BIN Router Firmware EU i 0 50 100 Percentage Completed Current File Aii MTASR3 200 Chapter 3 Software Loading and Configuration 6 The MultiRouter Setup Installation dialog box appears which states Please select a communication 9 port for the setup utility to use In other words select which COM port on your PC is connected to the Command Port of the RASFinder MultiR outer Installation x Please select a communication port for the setup utility to use Select the COM port COM1 COM2 COM3 or COMA for the setup utility The default port is COM1 Click on OK when you are satisfied with your selection When the software is successful loaded on your PC a system message is displayed stating MultiRouter Installation Successful Do you want to setup default parameters MultiR outer Installation a MultiR outer installation successful Do you want to setup default parameters Ensure that the Fail LED is off before you click on the Yes button Click on Yes to set up the default parameters If you click on No
50. d Services Digital Network An International telecommunications standard for transmitting voice video and data over a digital communications line ISDN is a world wide telecommunications service that uses digital transmission and switching technology to support voice and digital data communications Frame relay was partially based on ISDN s data link layer protocol LAPD Frame relay can be used to transmit across ISDN services offering circuit switched connection at 64K bps and higher speeds Contrast Public Switched Telephone Network PSTN ITU TSS formerly CCITT International Telecommunications Union Telecommunications Sector the United Nations organization that prepares standards Recommendations for resolving communications issues and problems J No Entries K Key Telephone System KTS Phone devices with multiple buttons that let you select incoming or outgoing CO phone lines directly Similar in operation to a PBX except with a KTS you don t have to dial a 9 to call outside the building Key Service Unit KSU A small device containing the switching electronics for a business key telephone system KTS Key Set A telephone set with several buttons for call holding line pickup intercom autodialing etc Also called a touchtone phone Ericsson and a KTS Key Telephone Set L LAPB Link Access Procedure Balanced based on the X 25 Layer 2 specification A full duplex point to point bit synchronous protoco
51. data passed across the interface between the Internet layer and the link layer A packet includes an IP header and data A packet can be a complete IP datagram or a fragment of an IP diagram 4 In X 25 a data transmission information unit A group of data and control characters transferred as a unit determined by the process of transmission Commonly used data field lengths in packets are 128 or 256 bytes 5 The field structure and format defined in the CCITT X 25 recommendation Packet Assembler Dissembler PAD Used by devices to communicate over X 25 networks by building or stripping X 25 information on or from a packet Packet Data The information format packetized used for packet mode calls Packet Mode Refers to the switching of chunks of information for different users using statistical multiplexing to send them over the same transmission facility Parity bit An extra bit attached to each byte of synchronous data used to detect errors in transmission Permanent Virtual Circuit PVC A connection between two endpoints dedicated to a single user In ISDN PVCs are establised by network administration and are held for as long as the user subscribes to the service Physical Unit PU The component that manages and monitors the resources such as attached links and adjacent link stations associated with a node as requested by an SSCP via an SSCP PU session An SSCP activates a session with the physical unit in order to indirec
52. dio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV technician for help This device complies with Part 15 of the FCC rules Operation is subject to the following two conditions 1 This device may not cause harmful interference 2 this device must accept any interference received including interference that may cause undesired operation Warning Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment FCC Regulations for Telephone Line Interconnection 1 This equipment complies with Part 68 of the Federal Communications Commission FCC rules On the outside surface of this equipment is a label that contains among other information the FCC registration number and ringer equivalence number REN If requested this information must be provided to the telephone company 2 As indicated below the suitable jack Universal Service Order Code connecting arrangement for this equipment is shown If applicable the facility interface codes FI
53. e 192 2 10 1 The RASFinder expects all IP addresses to be provided in dotted decimal notation addresses not used on the internetwork for addressing For Class A B and C addresses you will usually specify address masks of 255 0 0 0 255 255 0 0 and 255 255 255 0 respectively unless other subnets have been set up The net mask specifies the network or subnet portion of an IP address The net mask is a 32 bit value presented in a dotted decimal notation On the IP Port Setup window you can easily switch from the Ethernet port dialog box to any of the three WAN port windows by clicking on the corresponding tab Also clicking on the Advanced button will open the IP General Setup window The Ethernet and WAN IP Port Setup windows provide the capability to disable or enable IP routing on the selected port change the port IP Address IP mask and remote IP address The Port Setup windows determine how all the RASFinder ports are configured MTASR3 200 29 RASFinder User Guide 30 MultiRouter IP General Setup The IP General Setup dialog box controls the timers DHCP dynamic Host Configuration Protocol and Domain Name System DNS servers the default route filters and Static Routes In most cases you should not have to change any of the timers i e default TTL reassembly timeout RIP response time and RIP route aging time The DNS Resolver is supplied for remote Telnet clients when the router is configured for
54. e refer to Chapter 4 in this manual Fora detailed description of each parameter refer to the on line helps provided in the software The TCP IP stack has to be loaded before the Telnet client a Windows application can run Double click on the Telnet icon and a blank Telnet screen is displayed Click on Connection in the menu bar to display its dropdown menu then click on the Connect option and double click on the Host Address assigned to the RASFinder to display the Router Management Menu E Telnet 200 2 9 6 x Copyright C 1995 Hulti Tech Systems Inc Hulti Tech Systems Inc 2265 Woodale Drive Mounds View Minnesota 55112 USA Router Version 2 21 lt lt Router Management Menu gt gt 1 Dial out 2 Router Configuration 3 WAN Device Configuration 4 Remote User Database Esc Close the Telnet Session Enter your choice 1 to 4 exit or Esc li ET MTASR3 200 Chapter 6 Router Management Router Management The Router Management Menu provides four functional options in addition to the option of escaping and closing the Telnet session Dial Out The Dial out option Option 1 on the Router Management Menu enables a Telnet user to configure one of the WAN ports for a dial out session The default configuration of 115200 bps 8N1 can be used for the dial out session or the user can specify each parameter for the port e g the baud rate the number of data bits parity or the number o
55. e Seconds EFS Any second of operation that all 1 544M bits are received exactly as transmitted Contrast Errored Seconds MTASR3 200 73 RASFinder User Guide 74 ESF Error Event A T1 error condition that is logged when a CRC 6 error or an out of frame OOF error occurs Ethernet A 10 megabit baseband local area network that allows multiple stations to access the transmission medium at will without prior coordination avoids contention by using carrier sense and deference and resolves contention by using collision detection and transmission Ethernet uses carrier sense multiple access with collision detection CSMA CD Excess Zeros A T1 error condition that is logged when more than 15 consecutive Os or fewer than one 1 bit in 16 bits occurs Exchange A unit public or private that can consist of one or more central offices established to serve a specified area An exchange typically has a single rate of charges tariffs that has previously been approved by a regulatory group Exchange Area A geographical area with a single uniform set of charges tariffs approved by a regulatory group for telephone services Calls between any two points within an exchange area are local calls See also Digital PBX PBX Exchange Termination ET The carrier s local exchange switch Contrast with Loop Termination LT Explicit Congestion Management The method used in frame relay to notify the terminal equipment that the
56. e applications in the TCP IP suite operate over the reliable transport service provided by TCP UDP described in RFC 768 ftp ds internic net rfc rfc768 txt provides an end to end datagram connectionless service Some applications such as those that involve a simple query and response are better suited to the datagram service of UDP because there is no time lost to virtual circuit establishment and termination UDP s primary function is to add a port number to the IP address to provide a socket for the application 8 MTASR3 200 Chapter 1 Introduction and Description The Application Layer protocols are examples of common TCP IP applications and utilities which include MTASR3 200 Telnet Telecommunication Network a virtual terminal protocol allowing a user logged on to one TCP IP host to access other hosts on the network described in RFC 854 ftp ds internic net rfc rfc854 txt FTP the File Transfer Protocol allows a user to transfer files between local and remote host computers per IETF RFC 959 ftp ds internic net rfc rfc959 txt Archie a utility that allows a user to search all registered anonymous FTP sites for files on a specified topic Gopher a tool that allows users to search through data repositories using a menu driven hierarchical interface with links to other sites per RFC 1436 ftp ds internic net rfc rfc1436 txt SMTP the Simple Mail Transfer Protocol is the standard protocol for th
57. e control variable the bounds check is done again The keyword ENDFOR is mandatory at the end of the loop The WHILE loop has an expression and a statement list The expression is evaluated and if the expression is non zero the statement list is executed otherwise the loop execution terminates The keyword ENDWHILE is mandatory at the end of the loop Operator Precedence Operators are listed in the order of precedence Unary Operators unary minus logical negation Binary Operators _ lt gt lt gt amp amp ll All the operators are left associative Expressions are evaluated completely so care must be taken while writing expressions For example expressions like a 0 amp amp b a would create run time error MTASR3 200 Appendices Appendix C Regulatory Information FCC Declaration NOTE This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to ra
58. e exchange of electronic mail over the Internet per IETF RFC 821 ftp ds internic net rfc rfc821 txt HTTP the Hypertext Transfer Protocol is the basis for exchange of information over the World Wide Web WWW Various versions of HTTP are in use over the Internet with HTTP version 1 0 per RFC 1945 ftp ds internic net rfc rfc1945 txt being the most current HTML WWW pages are written in the Hypertext Markup Language HTML an ASCII based platform independent formatting language per IETF RFC 1866 ftp ds internic net rfc r c1866 txt Finger used to determine the status of other hosts and or users per IETF RFC 1288 ftp ds internic net rfc rfc1288 txt POP the Post Office Protocol defines a simple interface between a user s mail reader software and an electronic mail server the current version is POP3 described in IETF RFC 1460 ftp ds internic net rfc rfc1460 txt DNS the Domain Name System defines the structure of Internet names and their association with IP addresses as well as the association of mail name and other servers with domains SNMP the Simple Network Management Protocol defines procedures and management information databases for managing TCP IP based network devices SNMP defined by RFC 1157 ftp ds internic net rfc ric1157 txt is widely deployed in local and wide area network SNMP Version 2 SNMPv2 per RFC 1441 lt ftp ds internic net rfc rfc1 441 txt adds security mechanisms
59. e with tone dialing MTASR3 200 Glossary Q Quantizing The process of analog to digital conversion by assigning a range from the contiguous analog values to a discrete number R Random Access Memory RAM A computer s primary workspace All data must be stored in RAM even for a short while before software can use the processor to manipulate the data Before a PC can do anything useful it must move programs from disk to RAM When you turn it off all information in RAM is lost Rate Enforcement The concept in frame relay where frames sent faster than the CIR are to be carried only if the bandwidth is available otherwise they are to be discarded The frame relay network assumes that anything exceeding the CIR is of low priority Rate enforcement makes sure that the network will not get so congested that it isn t able to meet the agreed on CIR Recognized Private Operating Agency RPOA A corporation private or government controlled that provides telecommunications services RPOAs such as AT amp T participate as non voting members in the CCITT Red Alarm A T1 error condition generated when a local failure e g loss of synchronization exists for 2 5 seconds causing a Carrier Group Alarm CGA See also Blue Alarm and Yellow Alarm Request for Comment RFC A set of papers in which Internet standards published and proposed along with generally accepted ideas proposals research results etc are published
60. ech Systems RASFinder User Guide Appendix A Cabling Diagrams Command Port Cable COMMAND 12345678 TRANSMIT DATA BA To RECEIVE DATA BB DTE Device Terminal To COMMAND PORT ed ASCII Connector SIGNAL GHOUNDIAS Terminal LAN Cables ETHERNET 10BASE T X 10BASE 2 Pin Circuit Signal Name Pin Description 1 TD Data Transmit Positive 1 Center 2 TD Data Transmit Negative 2 Shield 3 RD Data Receive Positive 4 RD Data Receive Negative WAN Cables LINK3 LINK2 LINK1 Pin Circuit 3 Tip 4 Ring 54 MTASR3 200 Appendices Appendix B Script Language The script file can be used to automate certain operations The script file is a text file containing a sequence of commands The structure of a script file is succinctly expressed by the following grammar Script Language Grammar lt program gt lt declarations gt lt proc_declarations gt lt declarations gt lt var_type gt lt identifier gt identifier lt var_type gt INTEGER I STRING lt statement_list gt lt statement gt lt statement gt lt elementary_statement gt if statement l for statement while statement switch statement if statement IF expression THEN statement list ELSE statement list ENDIF for statement FOR lt identifier gt lt expression gt TO IDOWNTO lt expression STEP expression DO statement list ENDFOR while statement WHILE expression DO stat
61. ed for timing information in data recovery in AMI and B8ZS On Hook The condition of a device which has not accessed a phone line In modem use this is equivalent to a telephone handset that has not been picked up In other words it can receive an incoming call Contrast off hook Open Shortest Path First OSPF A hierarchical Interior Gateway Protocol IGP routing algorithm for IP that is a proposed standard for the Internet OSPF incorporates least cost routing equal cost routing and load balancing Outage The measure of the time during which a circuit is not available for use due to service interrupt Outage is the complement of circuit availability 100 minus available 96 outage MTASR3 200 77 RASFinder User Guide 78 Out of band Signaling that is separated from the channel carrying the information e g the voice data video signal is separate from the carrier signal Dialing and various other supervisory signals are included in the signaling element Contrast In band signaling Out of Frame OOF AT1 alarm condition that is logged on the loss of 2 3 or 4 of 5 consecutive FT framing bits P Packet 1 In data communication a sequence of binary digits including data and control signals that is transmitted and Switched as a composite whole The data control signals and possibly error control information are arranged in a specific format 2 Synonymous with data frame 3 In TCP IP the unit of
62. ed to be connected to a telephone interface The termination of an interface may consist of any combination of devices subject only to the requirement that the sum of the ringer equivalence numbers of all the devices does not exceed 5 Notice The Industry Canada label identifies certificated 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
63. ement list ENDWHILE switch statement SWITCH expression CASE integer const statement list CASE string const statement list DEFAULT statement list ENDSWITCH elementary statement lt identifier gt expression identifier expression expression GOTO identifier identifier expression lt expression gt OPERATOR expression lt expression gt lt expression gt expression I lt identifier gt expression expression OPERATOR 2 z lI 2l 221 21I amp amp EHE 1 1 10 10 proc declaration PROC lt identifier gt lt parameter_list gt lt vartype gt FORWARD proc declaration PROC lt identifier gt lt parameter_list gt vartype declarations statement list5ENDPROC parameter list argument list argument list argument list VAR var type identifier identifier Execution starts at the PROC main PROC main cannot have any arguments All the variables have to be declared before use All procedures must be declared before calling Recursion is allowed in procedures To define mutually recursive procedures use the FORWARD directive to indicate that the procedure body is defined later in the source file Procedures defined with the FORWARD directive should have all the parameters and return value if any specified the actual definition of the procedu
64. er FAIL or PASS Command T125 Testing DSP 56K Code Version Checksum Values Description MTASR3 200 n a Entering AT T125 lt cr gt tests the DSP56K code version and checksum running in external RAM Upon issuing this command the user may then issue ATl4 lt cr gt to get DSP version or ATl1 lt cr gt to get DSP checksum in RAM Entering AT T124 lt cr gt tests the DSP56K code version and checksum running in internal ROM Upon issuing this command the user may then issue ATl4 lt cr gt to get DSP version or ATl1 lt cr gt to get DSP checksum in ROM 67 RASFinder User Guide 68 MTASR3 200 TM R AS arr 200 Series Remote Access Device Glossary of Terms Multi lech Systems RASFinder User Guide 70 A Access The T1 line element made up of two pairs of wire that the telephone company brings to the customer premises The Access portion ends with a connection at the local telco LEC or RBOC Accunet Spectrum of Digital Services ASDS The AT amp T 56K bps leased private line service Similar to services of MCI and Sprint ASDS is available in nx56 64K bps where n 1 2 4 6 8 12 ACK ACKnowledgement code pronounced ack A communications code sent from a receiving modem to a transmitting modem to indicate that it is ready to accept data It is also used to acknowledge the error free receipt of transmitted data Contrast with NAK Adaptive Differential Pulse Code ADCPM In multimedia applic
65. erial interface between computers and peripheral devices modem mouse etc It uses a 25 pin DB 25 or a 9 pin DB 9 connector The RS 232 standard defines the purposes electrical characteristics and timing of the signals for each of the 25 lines RS 422 The EIA standard for a balanced interface with no accompanying physical connector RS 422 products can use screw terminals DB9 various DB25 and DB37 connectors RS 530 The EIA standard for the mechanical electrical interface between DCEs and DTEs transmitting synchronous or asynchronous serial binary data RS 530 provides for high data rates with the same connector used for RS 232 however it is incompatible with RS 232 S Serial Port The connector on a PC used to attach serial devices those that need to receive data one bit after another Such as a mouse a printer or a modem This consists of a 9 or 25 pin connector that sends data in sequence bit by bit Serial ports are referred to as COMx ports where x is 1 to 4 i e COM1 through COM4 A serial port contains a conversion chip called a UART which translates between internal parallel and external serial formats Service The requirements offered by an RPOA to its customers to satisfy specific telecommunications needs Severely Errored Seconds SES Refers to a typical T1 error event where an error burst occurs a short term high bit error rate that is self clearing Per the ITU T CCITT G 821 any second in whi
66. es Compare with pulse dialing Topology Physical layout of network components cables stations gateways and hubs Three basic interconnection topologies are star ring and bus networks Transmission Control Protocol TCP A communications protocol used in Internet and in any network that follows the US Department of Defense standards for internetwork protocol TCP provides a reliable host to host protocol between hosts in packet switched communications networks and in interconnected systems of such networks It assumes that the Internet protocol is the underlying protocol Transport Layer Layer 4 of the Open Systems Interconnection OSI model provides reliable end to end delivery of data and detects transmission sequential errors Transport Protocol Data Unit TPDU A transport header which is added to every message contains destination and source addressing information that allows the end to end routing of messages in multi layer NAC networks of high complexity They are automatically added to messages as they enter the network and can be stripped off before being passed to the host or another device that does not support TPDU s Trunk Transmission links that interconnect switching offices TSR terminate and stay resident A software program that remains active and in memory after its user interface is closed Similar to a daemon in UNIX environments Tunneling Encapsulation data in an IP packet for transport across the Inte
67. ess Multi Tech maintains a bulletin board system BBS that mirrors its FTP site Information available from the BBS includes new product information product upgrade files and problem solving tips The phone number for the Multi Tech BBS is 800 392 2432 USA and Canada or 612 785 3702 international and local The BBS can be accessed by any asynchronous modem operating at 1200 bps to 33 600 bps at a setting of 8 bits no parity and 1 stop bit 8 N 1 To log on to the Multi Tech BBS Set your communications program to 8 N 1 Dial our BBS at 800 392 2432 USA and Canada or 612 785 3702 international and local At the prompts type your first name last name and password then press ENTER If you are a first time caller the BBS asks if your name is spelled correctly If you answer yes a questionnaire appears You must complete the questionnaire to use the BBS on your first call Press ENTER until the Main Menu appears From the Main Menu you have access to two areas the Files Menu and News For help on menu commands type To Download a file 50 If you know the file name From the Main Menu type F to access the Files Menu then type D Enter the name of the file you wish to download from the BBS If a password is required enter the password MTASR3 200 Chapter 7 Service Warranty and Tech Support Answer Y or N to the automatic logoff question 5 Select a file transfer protocol by typing the indicated lette
68. evice typically uses an external T1 CSU MTASR3 200 Glossary Transmission Control Protocol Internet Program TCP IP A multi layer set of protocols developed by the US Department of Defense to link dissimilar computers across dissimilar and unreliable LANs Terminal The screen and keyboard device used in a mainframe environment for interactive data entry Terminals have no box which is to say they have no file storage or processing capabilities Terminal Adapter TA An ISDN DTE device for connecting a non ISDN terminal device to the ISDN network Similar to a protocol converter or an interface converter a TA connects a non ISDN device between the R and S interfaces Typically a PC card Tie line A dedicated circuit linking two points without having to dial a phone number i e the line may be accessed by lifting the telephone handset or by pushing a button Time Division Multiplexing TDM Division of a transmission facility into two or more channels by allotting the common channel to several different information channels one at a time Time Slot One of 24 channels within a T1 line Each channel has a 64K bps maximum bandwidth Time slot implies the time division multiplexing organization of the T1 signal Toll Call A call to a location outside of your local service area i e a long distance call Tone dialing One of two methods of dialing a telephone usually associated with Touch Tone push button phon
69. ew Minnesota 55112 612 785 3500 or 800 328 9717 Fax 612 785 9874 Tech Support 800 972 2439 BBS 612 785 3702 or 800 392 2432 Internet Address http www multitech com Fax Back 612 717 5888 Contents Chapter 1 Introduction and Description TO UCI Mee LE 6 Proview 100 MIS OI PR 6 Related Documental pri E NA 7 TCP IP Transmission Control Protocol Internet Protocol c cceescceeeeceeeeeeeeeeeeeaeeeesaaeeeseeeeeeseaeeeesecaees nnns 8 Internet Protocol UP sarria 10 A Typical NEWOIKAPPIICAVOM psss ett tinas 11 FVOMUP e e EE 12 Baca A nut IM LM MM M E E IS S DEUE 13 Link T 2 and 9 Connector suis cies pia piedad 13 Ethernet JOBase T CODIOCIOL asesinada ti los 13 EtherNet 10Base 2 Connector usina E 13 Command Comercio acusar deta 13 Power Comeclo ini ide 13 Spectator ia do pai ii ro eter 14 INIA POM mL 14 Command Pollen quee rol ciao balada duo dabas 14 WAN LOKS cansa ias ici oo 14 I CUCU TV scales tai LN EU 14 aio UN OO ooo 14 Chapter 2 Installation INTOAUCION MEE S rete rt 16 Bia te a o erat E A E T E Sadat A 16 Fnit ET 17 AddingAddtional RAM CE 18 Chapter 3 Software Loading and Configuration Introduction e 20 Loading your SO Ware assunto tii 20 setting Up Your Remote User Databas usina 24 Chapter 4 MultiRouter Software ngejelelet one EE 28 Before VOU Bogi A
70. f data which involves sending a group of characters in a packet This is a common method of transmission between computers on a network or between modems One or more synchronous characters are transmitted to confirm clocking before each packet of data is transmitted Compare to Asynchronous Transmission Systems Network Architecture SNA The description of the logical structure formats protocols and operational sequences for transmitting information units through and controlling the configuration and operation of networks T Tariff The rate availability schedule for telephone and ISDN services from a regulated service provider TCP IP A set of communication protocols that support peer to peer connectivity functions for both local and wide area networks T Carrier The generic name for a digitally multiplexed carrier system In the North American digital hierarchy a T is used to designate a DS digital signal level hierarchy Examples T1 DS1 is a 1 544 M bps 24 channel designation In Europe T1 is called E1 The T Carrier system was originally designed for transmitting digitized voice signals but has since been adapted for digital data applications T1 A digital transmission link capable of 1 544M bps T1 uses two pairs of normal UTP and can handle 24 voice conversations each digitized at 64K bps T1 is a standard for digital transmission in the U S Canada Japan and Hong Kong T1 is the access method for high speed services su
71. f stop bits When the connection is established anything entered on the keyboard is immediately presented to the WAN port When the dial out session is over the WAN port reverts to its original configuration Router Configuration The Router Configuration option Option 2 on the Router Management Menu enables a Telnet user to view and change parameters on the protocol stacks high or low level device drivers enable or disable the supported servers or view system information Telnet 200 2 9 6 lt lt Router Configuration gt gt 1 Protocol Stacks 2 High Level Device Drivers HLDD 3 Low Level Device Drivers LLDD 4 Applications 5 System Information Enter Your Choice 1 to 5 exit or ESC to Previous menu 4 lt lt Applications Menu gt gt 1 TFTP Server 2 Telnet Server 3 AG Server 4 Terminal Server 5 Dumb TTY 6 Router Password Enter Your Choice 1 to 6 exit or ESC to Previous menu 4 Protocol Stacks The Protocol Stacks option on the Router Configuration menu provides the options for setting up the following protocols IPX IP Spanning Tree and SNMP Choosing the Protocol Stacks option Option 1 in the Router Configuration menu displays the Protocol Stacks Menu To review the IPX routing information you can enter the number 1 to display the options to enable disable IPX enable or disable AutoLearn change the Router Name change the Network Number etc MTASR3 2
72. ghts indicating that the RASFinder is connected to the local area network LINK x RD Receive Data indicator blinks when the link is receiving data TD Transmit Data indicator blinks when the link is transmitting data CD Carrier Detect indicator lights when the link detects a carrier signal TR Terminal Ready indicator blinks when the link is ready to transfer data Fail Fail indicator lights when a self test fails to complete as expected Power The power indicator lights when the On Off Switch is in the ON position 12 MTASR3 200 Chapter 1 Introduction and Description Back Panel The cable connections for the RASFinder are made at the back panel Three groups of cables are used on the RASFinder the Command Port Link 1 2 and 3 RJ11 and the EtherNet The cable connections are shown in Figure 1 3 and defined in the following groups LINK3 LINK2 LINK1 ETHERNET 10BASET 10BASE2 RJ11 LINK Connectors 3 Ethernet Connectors EOM CIUBFDIN 10 BASE T UTP RJ45 and 10 BASE 2 BNC Coax RJ45 Command Port Connector Figure 1 3 Back Panel Link 1 2 and 3 Connector These Link 1 2 and 3 connectors are used to connect the RASFinder to a WAN These connectors are RJ11 connectors EtherNet 10Base T Connector The EtherNet 10Base T connector is used to connect the RASFinder to a LAN using unshielded twisted cable This connector is an RJ45 jack EtherNet 10Base 2 Connector The EtherNet 10Ba
73. gs up and resets as if an ATZ command were issued Load Factory Default Settings n 0 None Load factory settings as active configuration V 22bis Guard Tone Control nz0 1 0r2 0 Disable guard tone Enable 550 Hz guard tone Enable 1800 Hz guard tone The amp G command is not used in North America 64 MTASR3 200 Command Values Default Description Command Values Defaults Description Command Values Defaults Description Command Values Defaults Description Command Values Default Description Command Values Default Description Command Values Description Command Values Default Description Command Values Default Description Command Values Default Description amp Jn amp JO amp J1 amp Kn amp KO amp K3 amp K4 amp Mn amp MO amp M1 amp Qn amp QO amp Q5 amp Q6 amp Sn amp S0 amp S1 amp Tn amp TO amp T1 amp T3 amp T6 amp V amp Wn amp WO amp Yn amp YO amp Y1 amp Zn x MTASR3 200 Appendices Auxiliary Relay Control n 0 0 The auxiliary relay is never closed Not supported responds ERROR Local Flow Control Selection n 0 3 0r4 3 Flow control disabled Enable CTS RTS hardware flow control Enable XON XOFF software flow control Communications Mode n 0 0 Asynchronous mode Reserved responds ERROR A
74. hing construct The type of conditional expression should be either INTEGER or STRING The value of the conditional expression is matched against the constraints given in the CASE options if the value matches a CASE option value control enters that CASE option If the values do not match any of the CASE options and if a DEFAULT option is provided control continues at the DEFAULT option otherwise control continues at the statement after the ENDSWITCH If control enters one of the CASE or DEFAULT statements all the statements up to the next ENDCASE statement are executed Each CASE or DEFAULT statement should be terminated by a matching ENDCASE keyword The SWITCH statement should be terminated by a ENDSWITCH keywork The DEFAULT statement can be placed anywhere within the scope of the SWITCH statement There can be only one DEFAULT statement There are two types of iterative constructs FOR and WHILE The FOR construct sets the loop control variable to an initial value The control variable is checked for bounds and if within bounds the statement list given is executed otherwise the loop execution terminates After each execution of statement list the control variable is incremented or decremented by a certain value This is computed as follows if the STEP expression is given it is the value of the expression else it is 1 The control variable is incremented if TO is specified and is decremented if DOWNTO is specified After updating th
75. iei oi 57 Appendix AT Command SUMMATY zo tuts qae treten netta etuer ed rectae ads 61 Glossary of Terms e TM R AS arr 200 Series Remote Access Device Chapter 1 Introduction and Description Multi lech Systems RASFinder User Guide Introduction Welcome to Multi Tech s new RASFinder 200 Series model number MTASR3 200 a Remote Access Server RAS for remote dial in access and LAN to LAN routing capability The RASFinder 200 Series is a remote access device that supports up to three concurrent dial in sessions and IP or IPX remote access The RASFinder 200 Series features a 10BaseT or 10Base2 port for local LAN connection Command Port for configuration and three internal K56flex modems System management is provided through the command port using bundled Windows based software which provides easy to use configuration menus 6 MTASR3 200 Chapter 1 Introduction and Description Chapter 5 Remote Configuration This chapter provides procedures for changing the configuration of a remote RASFinder located elsewhere on a LAN or at the other end of a modem connection Chapter 6 Router Management Chapter 6 describes typical Telnet Client and WEB browser management of the RASFinder Chapter 7 Service Warranty and Tech Support Chapter 7 provides statements concerning the product warranty has space for recording information about your RASFinder prior to calling Multi Tech s Technical Support and include
76. ion FXS See FX FXO To generate a call from the computer telephony system to the POTS set an FXS connection must be configured Forward Explicit Congestion Notification FECN A bit that tells you that a certain frame on a particular logical connection has encountered heavy traffic The bit provides notification that congestion avoidance procedures should be initiatedin the same direction of the received frame See also BECN Backward Explicit Congestion Notification Frame A group of data bits in a specific format to help network equipment recognize what the bits mean and how to process them The bits are sent serially with a flag at each end signifying the start and end of the frame Frame Relay A form of packet switching that uses small packets and that requires less error checking than other forms of packet switching Frame relay is effective for sending bursty data at high speeds 56 64K 256K and 1024K bps over wide area networks Frame Relay specifications are defined by ANSI documents ANSI T1 602 T1 606 T1S1 90 175 T1S1 90 213 and T1S1 90 214 In using frame relay blocks of information frames are passed across a digital network interface using a connection number that is applied to each frame to distinguish between individual frames MTASR3 200 Glossary Frame Relay Forum A non profit organization of 300 vendors and service providers based in Foster City CA that are developing and deploying frame relay equipment
77. it switched full duplex digital synchronous data transmission service that lets you dial a number and transmit data to it at 56K bps It is a relatively low cost service widely used in North America for telecommuting videoconferencing and high speed data transfers Many phone companies are or will be phasing out Switched 56 in favor of ISDN service Switched Virtual Circuit SVC A type of data transmission where the connection is maintained only until the call is cleared Switched Line In communications a physical channel established by dynamically connecting one or more discrete segments This connection lasts for the duration of the call after which each segment can be used as part of a different channel Contrast with leased line Switched Network A network in which a temporary connection is established from one point via one or more segments Synchronous Data Link Control SDLC A discipline conforming to subsets of the Advanced Data Communications Control Procedures ADCCP of the American National Standards Institute ANSI and High level Data Link Control HDLC of the International Organization for Standardization for managing synchronous code transparent serial by bit information transfer over a link connection Transmission exchanges may be duplex or half duplex over switched or nonswitched links The configuration of the link connection may be point to point multipoint or loop Synchronous Transmission The transmission o
78. ital Service level 0 DSO The world wide standard speed 64K bps for digital voice conversation using PCM pulse coded modulation Digital Service level 1 DS1 The 1 544M bps voice standard derived from an older Bell System standard for digitized voice transmission in North America The 1 544M bps consists of 24 digitally encoded 64K bps voice channels north America and 2 048M bps 30 channels elsewhere Digital Signal A discrete or discontinuous signal e g a sequence of voltage pulses Digital devices such as terminals and computers transmit data as a series of electrical pulses which have discrete jumps rather than gradual changes Digital Signaling Rates DSn A hierarchical system for transmission rates where DSO is 64K bps equivalent to ISDN B channel and DS1 is 1 5 Mbps equivalent to ISDN PRI Digital Transmission A method of electronic information transmission common between computers and other digital devices Analog signals are waveforms a combination of many possible voltages A computer s digital signal may be only high or low at any given time Therefore digital signals may be cleaned up noise and distortion removed and amplified during transmission Digitize To convert an analog signal to a digital signal DIP switch pronounced dip switch A set of tiny toggle switches built into a DIP dual in line package used for setting configurable parameters on a PCB printed circ
79. ited at MTS s option to repair or replacement of any products which prove to be defective within the warranty period or at MTS s option issuance of a refund of the purchase price Defective products must be returned by Customer to MTS s factory transportation prepaid MTS WILL NOT BE LIABLE FOR CONSEQUENTIAL DAMAGES AND UNDER NO CIRCUMSTANCES WILL ITS LIABILITY EXCEED THE PURCHASE PRICE FOR DEFECTIVE PRODUCTS On line Warranty Registration 48 If you would like to register your RASFinder electronically you can do so at the following address http www multitech com support register htm MTASR3 200 Chapter 7 Service Warranty and Tech Support Tech Support Multi Tech has an excellent staff of technical support personnel available to help you get the most out of your Multi Tech product If you have any questions about the operation of this unit call 1 800 972 2439 Please fill out the RASFinder information below and have it available when you call If your RASFinder requires service the tech support specialist will guide you on how to send in your RASFinder refer to the next section Recording RASFinder Information Please fill in the following information on your Multi Tech RASFinder This will help tech support in answering your questions The same information is requested on the Warranty Registration Card Model No Serial No Software Version The model and serial numbers are on the bottom of your R
80. l commonly used as a data link control protocol to interface X 25 DTEs LAPB is the link initialization procedure that establishes and maintains communications between the DTE and the DCE LAPD Link Access Protocol for the D Channel based on the ISDN Q 921 specification A full duplex point to point bit synchronous link level protocol for ISDN connections different from LAPB in its framing sequence Transmission is in units called frames and a frame may contain one or more X 25 packets Line Coding The representation of 1s and 0s on a T1 line The two methods of line coding commonly used B8ZS and AMI differ in the restrictions placed on user data T1 line coding ensures that sufficient timing information is sent with the digital signal to ensure recovery of all the bits at the far end Timing information on the T1 line is included in the form of 1s in the data stream a long string of Os in the data stream could cause problems recovering the data Line Termination LT The electronics at the ISDN network side of the user network interface that complements the NT1 at the user side The LT and the NT1 together provide the high speed digital line signals required for BRI access Listed Directory Number LDN The main number assigned by the telco the number listed in the telephone directory and also provided by Directory Assistance Some devices can have more than one LDN such as ISDN devices that have one LDN for voice and another LDN for data
81. make necessary modifications in order to maintain uninterrupted service 6 If trouble is experienced with this equipment the model of which is indicated below please contact Multi Tech Systems Inc at the address shown below for details of how to have repairs made If the equipment is causing harm to the telephone network the telephone company may request that you remove the equipment from the network until the problem is resolved 7 No repairs are to be made by you Repairs are to be made only by Multi Tech Systems or its licensees Unauthorized repairs void registration and warranty 8 This equipment cannot be used on public coin service provided by the telephone company Connection to Party Line Service is subject to state tariffs Contact the state public utility commission public service commission or corporation commission for information 9 If so required this equipment is hearing aid compatible Manufacturer Multi Tech Systems Inc Trade name RASFinder 200 Series Model Numbers MTASR3 200 FCC Registration Number AU7USA 24992 M5 E Ringer Equivalence 0 6B Modular Jack RJ11 Service Center in U S A Multi Tech Systems Inc 2205 Woodale Drive Mounds View MN 55112 800 328 9717 612 785 3500 612 785 9874 Fax 58 MTASR3 200 Appendices Canadian Limitations Notice Notice The ringer equivalence number REN assigned to each terminal device provides an indication of the maximum number of terminals allow
82. mp D1 amp D2 amp D3 amp Fn amp FO amp Gn amp GO amp G1 amp G2 Result Code Selection n 0 7 4 Basic result codes e g CONNECT does not look for dial tone or busy signal Extended result codes CONNECT 56000 V42bis CONNECT 33600 V42bis etc does not look for dial tone or busy signal Extended result codes with NO DIALTONE does not look for busy signal Extended result codes with BUSY does not look for dial tone Extended result codes with NO DIALTONE and BUSY Extended result codes with NO DIALTONE and BUSY Extended result codes with NO DIALTONE and BUSY Basic result codes with NO DIALTONE and BUSY Long Space Disconnect n 0 0 Disable sending or responding to long space break signal on disconnect Enable sending or responding to long space break signal on disconnect Not supported Modem Reset n Oor1 None Reset modem to profile saved by the last amp W command Same as ZO V 32 Auto Retrain n 1 4 Disable V 32 auto retrain Not supported Enable V 32 auto retrain Data Carrier Detect DCD Control n 00r1 4 Force Data Carrier Detect signal high Let Data Carrier Detect follow carrier signal Data Terminal Ready DTR Control n20 1 2 0r3 2 Modem ignores DTR signal When DTR drops while in online data mode the modem enters command mode issues an OK and remains connected When DTR drops while in online data mode the modem hangs up When DTR drops the modem han
83. n the MultiRouter Configuration icon and clicking on the WAN button 24 The Checking Router dialog box displays The Setup utility is Ready to Download default setup Choose OK to proceed MultiRouter Checking Router Ready to Download default Setup Choose OK to proceed Click on the OK button to continue installing the software The Writing Setup dialog box displays as the setup configuration is written to the RASFinder HMultiR outer Writing Setup Date Stamp Feb 24 1998 Size bytes 36072 19 25 Check to ensure that the Fail LED on the RASFinder is Off after the download is complete and the RASFinder is rebooted 26 Win3 1 users you are returned to your Program Manager where the MultiRouter Program Group and Program Items Windows icons have been created Win95 users you are returned to your desktop Your RASFinder is operational at this time MTASR3 200 23 RASFinder User Guide Setting Up Your Remote User Database The remote user database lets you gather information about your remote users You can add remote users remove users from the database or you can edit information in the database 1 Win3 1 users From the Program Manager click on the Remote User Data Base icon E MultiR outer OF x File Edit View Help DEFAULT FIRHHRRE e igs Configuration Download Download Port Setup Default Setup Firmware Update PE Router SNMP Configuration
84. network is overly busy The use of FECN and BECN is called explicit congestion management Some end to end protocols use FECN or BECN but usually not both options together With this method a congestion condition is identified and fixed before it becomes critical Contrast with implicit congesion Extended Super Frame ESF One of two popular formats for framing bits on a T1 line ESF framing has a 24 frame super frame where robbed bit signaling is inserted in the LSB bit 8 of the DS 0 byte of frames 6 12 18 and 24 ESF has more T1 error measurement capabilities than D4 framing Both ESF and B8ZS are typically offered to provide clear channel Service F Failed Seconds A test parameter where the circuit is unavailable for one full second Failed Signal A T1 test parameter logged when there are more than 9 SES Severely Errored Seconds Fax facsimile Refers to the bit mapped rendition of a graphics oriented document fax or to the electronic transmission of the image over telephone lines faxing Fax transmission differs from data transmission in that the former is a bit mapped approximation of a graphical document and therefore cannot be accurately interpreted according to any character code Firmware A category of memory chips that hold their content without electrical power they include ROM PROM EPROM and EEPROM technologies Firmware becomes hard software when holding program code Foreground The application progr
85. ocol was designed to connect local area networks Although there are many protocols that do this IP refers to the global system of interconnecting computers It is a highly distributed protocol each machine only worries about sending data to the next step in the route Internetwork Packet Exchange IPX A NetWare communications protocol used to route messages from one node to another IPX packets include network addresses and can be routed from one network to another An IPX packet can occasionally get lost when crossing networks thus IPX does not guarantee delivery of a complete message Either the application has to provide that control or NetWare s SPX protocol must be used Interoperable Devices from different vendors that can exchange information using a standard s base protocol 1 0 Addresses Locations within the I O address space of your computer used by a device such as an expansion card a serial port or an internal modem The address is used for communication between software and a device IRQ Level Interrupt Request Level The notification a processor receives when another portion of the computer s hardware requires its attention IRQs are numbered so that the device issuing the IRQ can be identified and so IRQs can be prioritized ISA Industry Standards Architecture pronounced ice a The classic 8 or 16 bit architecture introduced with IBM s PC AT computer MTASR3 200 75 RASFinder User Guide 76 ISDN Integrate
86. ometimes control codes that is transferred as an entry from an originator to one or more recipients Modem A communications device that enables a computer to transmit information over a telephone line It converts the computer s digital signals into analog signals to send over a telephone line and converts them back to digital signals at the receiving end Modems can be internal and fit into an expansion slot or external and connect to a serial port Multiplexer Mux 1 A device that takes several input signals and combines them into a single output signal in such a manner that each of the input signals can be recovered 2 A device capable of interleaving the events of two or more activities or capable of distributing the events of an interleaved sequence to the respective activities 3 Putting multiple signals on a single channel Multiprotocol A device that can interoperate with devices utilizing different network protocols MultiRouter A secure gateway that provides multiple LAN users with high performance Internet access by functioning as a TCP IP MultiRouter that resides on the outer edge of a firewall Multithreading The ability of a software system to be able to handle more than one transaction concurrently This is contrasted to the case where a single transaction is accepted and completely processed befor the next transaction processing is started N Nailed Connection A permanent or dedicated circuit of a previously switched ci
87. ose the Telnet Session Enter your choice 1 to 4 exit or Esc 3 lt lt Select WANTalk Port gt gt 1 Port 1 2 Port 2 3 Port 3 Enter Your Choice 1 to 3 exit or ESC to Previous nenu B Ki inl Remote User Database The Remote User Database option Option 4 on the Router Management Menu allows a remote user to add user information such as Name and Password callback information and which protocol stacks to enable or disable MTASR3 200 Telnet 200 2 9 6 1 Dial out 2 Router Configuration 3 WAN Device Configuration 4 Remote User Database Esc Close the Telnet Session Enter your choice 1 to 4 exit or Esc lt lt Remote User Database gt gt A Add User Enter your choice a 1 User Name 2 User Password 3 Call Back disabled 4 Call Back Security disabled 5 Call Back Number 6 Call Back Delay 10 7 IP enabled 8 IPX enabled 9 Spanning Tree enabled Enter your choice 1 to 9 exit or ESC to Previous menu 4 45 RASFinder User Guide WEB Browser Management The RASFinder can be accessed from anywhere on the connected Internet via its built in WEB Browser interface To enable this function you must check this option in Other setup Depending on the rights of the user read write or read only it is possible to view the current parameters and statistics of the RASFinder as well as configure and download setup changes to the unit Y
88. ou can access RASFinder configuration by typing the IP Address of the unit into the address line of your web browser To configure this Router you should login as supervisor and enter Router password Multi oc O Systems 2205 Woodale Drive Mounds View MIN 55112 United States TEL 612 785 3500 or 800 328 9717 FAX 612 785 9874 BBS 612 785 3702 or 800 392 2432 Tech Support 800 972 2439 Fax hack System 612 717 5888 Web Site www multitech com FTP Site ftp multitech com Tech Support tsupport multitech com When the Welcome screen appears click on the word Login to gain access to the RASFinder The Enter Network Password screen appears Enter your User name and Password then click on OK to go to the RASFinder Configuration menu MultiTech Router s Configuration Protocol Stacks e e PX Spanning Tree Device Drivers PPP WAN Other Setup SNMP Application Filtering White Setup And ReBoot Multi Systems Note The first user to access the RASFinder will have read write rights over the unit All subsequent users will have read only rights and therefore some of the options within the WEB interface will be inactive i e will not be linked 46 MTASR3 200 d TM R AS arr 200 Series Remote Access Device Chapter 7 Service Warranty and Tech Support Multi lech Systems RASFinder User Guide Introduction This chapter
89. printers are a few examples of the devices that contain buffers Bus A common channel between hardware devices either internally between components in a computer or externally between stations in a communications network Byte The unit of information a computer can handle at one time The most common understanding is that a byte consists of 8 binary digits bits because that s what computers can handle A byte holds the equivalent of a single character such as the letter A C Call Setup Time The time to establish a circuit switched call between two points Includes dialing wait time and CO long distance service movement time Carrier Group Alarm CGA A T1 service alarm generated by a channel bank when an OOF condition occurs for a predefined length of time usually 300mS to 2 5 seconds The CGA causes the calls using a trunk to be dropped and for trunk conditioning to be applied Carrier signal An analog signal with known frequency amplitude and phase characteristics used as a transport facility for useful information By knowing the original characteristics a receiver can interpret any changes as modulations and thereby recover the information CCITT Consultative Committee for International Telephone and Telegraph An advisory committee created and controlled by the United Nations and headquartered in Geneva whose purpose is to develop and to publish recommendations for worldwide standardization of telecommunications devices
90. r such as Z for Zmodem the recommended protocol 6 If you select Zmodem the transfer will begin automatically If you select another protocol you may have to initiate the transfer yourself In most datacomm programs the PAGE DOWN key initiates the download When the download is complete press ENTER to return to the File Menu 8 To exit the BBS type G and press ENTER If you don t know the file name 1 From the Main Menu type F to access the Files Menu For a list of file areas type L press ENTER then type L and press ENTER again If you do not type the second L you will list all of the files on the BBS 2 Mark each file area you would like to examine by typing its list number and pressing ENTER 3 Enter L to list all the files in the selected file areas Enter C to go forward in the file list and P to go back 4 To mark one or more files for download type M press ENTER type the list numbers of the files and press ENTER again 5 Enter D You will see a list of the files you have marked Enter E if you would like to edit the list otherwise enter D again to start the download process 6 Select a file transfer protocol by typing the indicated letter such as Z for Zmodem the recommended protocol 7 f you select Zmodem the file will transfer automatically If you select another protocol you may have to initiate the transfer yourself In most data communications programs the PAGE DOWN key initiates the
91. rcuit or circuits Nailed up Circuit A semi permanent circuit established through a circuit switching facility for point to point connectivity NAK Negative Acknowledgment Communications code used to indicate that a message was not properly received or that a terminal does not wish to transmit Contrast with ACK Network A group of computers connected by cables or other means and using software that enables them to share equipment such as printers and disk drives to exchange information Node Any point within a network which has been assigned an address O Object Oriented A method for structuring programs as hierarchically organized classes describing the data and operations of objects that may interact with other objects Office Channel Unit Data Port OCU DP The CO channel bank used as the interface between the customer s DSU and the channel bank Off hook The condition of a device which has accessed a phone line with or without using the line In modem use this is equivalent to a telephone handset being picked up Dialing and transmission are allowed but incoming calls are not answered Contrast on hook Off Premise Extension OPX An extension or phone that terminates in a location other than that of the PBX Commonly used to provide a corporate member with an extension of the PBX at home Ones Density the measure of the number of logical 1s on a T1 line compared to a given total number of bits on that line us
92. re body should not contain the formal parameter list or the return value An example of forward defined procedures is given below proc a integer x y integer forward proc b integer u v integer forward proc a integer t Some more code here t b x y Some more code here return t endproc proc b return a u v endproc MTASR3 200 55 RASFinder User Guide 56 Argument to procedures can be passed by value or address To pass an argument by address prefix the argument name in the formal parameter list by the keyword VAR otherwise the argument is passed by value Only variables can be passed by address Expressions like A B where A and B are integer variables can be passed by value but cannot be passed by address Two basic types of variables are supported INTEGER and STRING In the STRING since the ASCII null character is internally used to indicate the end of the sequence it cannot be part of the string All other characters including extended ASCII characters can be part of the string There are two types of conditional constructs IF and SWITCH The IF statement is a two way branching construct The condition can be an arbitrary expression The condition in the IF statement should evaluate to an integer or real If the expression in the IF statement evaluates to non zero the control enters the THEN statement otherwise control enters the ELSE statement The SWITCH statement is a multi way branc
93. rnet Twisted pair wiring A type of cabling with one or more pairs of insulated wires wrapped around each other An inexpensive wiring method used for LAN and telephone applications also called UTP wiring U UART Universal Asynchronous Receiver Transmitter pronounced you art A chip that transmits and receives data on the serial port It converts bytes into serial bits for transmission and vice versa and generates and strips the start and stop bits appended to each character UNIX An operating system developed by Bell Laboratories that features multiprogramming in a muti user environment Unshielded Twisted Pair UTP Telephone type wiring Tansmission media for 10Base T V V 25bis An ITU T standard for synchronous communications between a mainframe or host and a modem using HDLC or other character oriented protocol V 54 The ITU T standard for local and remote loopback tests in modems DCEs and DTEs The four basic tests are local digital loopback tests DTE send and receive circuits local analog loopback tests local modem operation remote analog loopback tests comm link to the remote modem and remote digital loopback tests remote modem operation Virtual Circuit A logical connection Used in packet switching wherin a logical connection is established between two devices at the start of transmission All information packets follow the same route and arrive in sequence but do not necessarily carry a
94. s 206 16 196 252 IP Address 206 16 196 251 Mask 255 255 255 0 E Default Route 206 16 196 254 Address of router attaching Internet LL iini Novell File WinNT Web Server Server A PPP Client Trumpet Win95 Win95 w Netware Client and PPP ote Node A IP Address 206 16 196 102 IP Address 206 16 196 103 Figure 1 2 Typical network configuration MTASR3 200 11 RASFinder User Guide Front Panel The front panel contains three groups of LEDs that provide the status of the LAN connection link activity and general status of the RASFinder The EtherNet LAN LEDs display the activity of the LAN in whether the RASFinder is connected to the LAN transmitting or receiving packets and if a collision is in progress The Link LEDs display the status of the three links that can be connected to the RASFinder with whether a link is ready to transmit or receive serial data The last group of LEDs indicates whether the self test passed or failed and if the power ON OFF switch on the back of the RASFinder is set to ON Fail Power Figure 1 2 Front Panel ETHERNET RD Receive Data indicator blinks when packets are being received from the local area network TD Transmit Data indicator blinks when packets are being transmitted to the local area network CL Collision indicator lights when a collision is in progress that is when two nodes are transmitting packets at the same time LK Link indicator li
95. s domain name is multitech com where com indicates this is a commercial organization edu denotes educational organizations gov denotes government organizations etc Next you determine how many IP addresses you ll need This depends on how many individual network segments you have and how many systems on each segment need to be connected to the Internet You need an IP address for each network interface on each computer and hardware device IP addresses are 32 bits long and come in two types network and host Network addresses come in five classes A B C D and E Each class of network address is allocated a certain number of host addresses For example a class B network can have a maximum of 65 534 hosts while a class C network can have only 254 The class A and B addresses have been exhausted and the class D and E addresses are reserved for special use Consequently companies now seeking an Internet connection are limited to class C addresses The current demand for Internet connections will exhaust the current stock of 32 bit IP addresses In response Internet architects have proposed the next generation of IP addresses IPng IP Next Generation It will feature 16 byte 128 bit addressing surpassing the capacities of 32 bit IP Still in its design phase IPng also known as IPv6 is not expected to be widely deployed before the end of this century An IP address can serve only a single physical network Therefore if your organiza
96. s have to be the same and unique The IPX General Setup window controls the routing of the protocol and auto learn of Ethernet network numbers defines the broadcast name of the RASFinder and IPX filtering If bridging of IPX packets is desired IPX routing must be disabled and frame type support for the frame type must be enabled If there is a server on the local segment then IPX network number auto learn should be enabled If there is no server or if for some reason the RASFinder comes up before the server the RASFinder will default to some random network numbers after a short period of time MultiRouter IPX General Setup X Auto Learn Ethernet Network Numbers Router Internal Network Number 00300333 di 4 Message Printing Control Printf Alarm MTASR3 200 31 RASFinder User Guide Spanning Tree Setup When Bridging is enabled the Spanning Tree Setup dialog box controls simple transparent bridging between two remote Ethernet LANs However if your internetwork contains any loops or redundant links then the Spanning Tree Algorithm must also be enabled If you use only the IP and IPX protocols leave bridging disabled to allow the RASFinder to operate more efficiently MultiRouter Spanning Tree Setup El X Bridging Enable Message Printing Control ESI Port 1 State forwarding xl Cost Port 2 State forwarding M Cost 1000 Port 3 State forwarding
97. s instructions for contacting Technical Support and returning your RASFinder to the factory if it requires service Also included is information on how to use our bulletin board service BBS and how to obtain product support through CompuServe and the Internet There is also an explanation of how to order technical literature using our 24 hour Fax Back Service Appendices Included in the Appendices are Cabling Diagrams for the external cables you connect to the RASFinder Script Language that can be used to automate certain operations Regulatory Information a summary of AT Commands and a Glossary of Terms Related Documentation The complete documentation package for the RASFinder 200 Series includes this User Guide a Quick Start Guide a Client Setup User Guide and a Remote Access Server Dial Out Redirector User Guide The printed version of the Quick Start Guide shipped with the unit provides the necessary information for a qualified person to unpack cable load software and configure the unit for proper operation The Client Setup User Guide is for multiple users to configure their Windows 95 PCs to dial in to a Remote Access Server The Dial Out Redirector User Guide is for those who need communications connectivity for their Windows or DOS dial out or fax out programs Copies of the following guides are provided on the Manuals diskette that ships with each RASFinder 200 Series unit and you can always find the latest version of these g
98. s or you can manually assign the network numbers by clicking on No in the Auto Learn Network Numbers field If no file server is connected to the Ethernet segment then this field should be No recommended If you enable Auto Learn Yes the RASFinder will learn the IPX network numbers from the file server If you select No for Auto Learn record the network numbers assigned by the network file server for each of the four frame types Raw 802 3 LLC 802 2 Ethernetll Type II and SNAP in the space provided below RAW 802 3 Frames Network Number LCC 802 2 Frames Network Number TYPE Il Frames Network Number SNAP Frames Network Number WAN Network Number When you manually assign network numbers make sure they match the network numbers assigned to your local file server if any WAN Enter the WAN network number for the active WAN Port s by clicking on the Network Number box and back spacing through the default number and entering your new WAN number Also the WAN network numbers must be the same as the RASFinder on the other end of the link The WAN network numbers have to be assigned by the network administrator and must be unique throughout the entire internetwork Highlight the WAN 2 and or WAN 3 network number and change its Network Number Note The WAN ports do not have the capability of learning the network number unlike the LAN port i e the WAN ports do not have a file server Click on OK
99. se 2 connector is used to connect the RASFinder to a LAN using thin Coax cable Command Connector The Command connector is used to configure the RASFinder using a PC with a serial port and running Windows software The Command connector is an RJ45 jack and a short adapter cable is provided to convert to a standard serial port DB25 female connector Power Connector The Power connector is used to connect the external power supply to the RASFinder The Power connector is a 6 pin circular DIN connector A separate power cord is connected to the power supply and the live AC grounded outlet MTASR3 200 13 RASFinder User Guide Specifications The RASFinder conforms to the following specifications e Routing Protocols IP and IPX and bridging for all others EtherNet LAN Interface 10Base T twisted pair or 10Base2 ThinNet AUI WAN Interface 3 async or sync Links RS232C V 35 Framerelay networks for SLIP PPP Async and HDLC Sync devices Frame relay trunk speeds up to T1 E1 synchronous Command Port 19 2K bps Asynchronous One 70 nanosecond 4MB SIMM and a connector for a 2nd 4MB SIMM RAM is expandable to a maximum of 32 MB Caution SIMM speed and size cannot be mixed 1 MB of Flash memory on two PROMs EtherNet Port One Ethernet Interface 10Base T twisted pair RJ45 connector or 10Base 2 ThinNet BNC connector Command Port Single 19 2K bps asynchronous Command Port using a short RJ45 to DB25 cable with
100. sing a fixed non shareable path through the network Users have full use of the circuit until the connection is terminated Clear Channel A transmission path where the full bandwidth is used i e no bandwidth needed for signaling carrier framing or control bits A 64K bps digital circuit usually has 8K bps used for signaling ISDN has two 64K bps circuits and a 16K bps packet service of which part is used for signaling on the 64K channels Client Server In TCP IP the model of interaction in distributed data processing in which a program at one site sends a request to a program at another site and awaits a response The requesting program is called a client the answering program is called a server Cluster Controller A device that can control the input output operations of more than one device connected to it A cluster controller may be controlled by a program stored and executed in the unit or it may be entirely controlled by hardware Committed Burst Size The maximum number of bits that the frame relay network agrees to transfer during any measurement interval Committed Information Rate CIR An agreement a customer makes to use a certain minimum data transmission rate in bps The CIR is part of the frame relay service monthly billing along with actual usage that users pay to their frame relay service provider Compression 1 The process of eliminating gaps empty fields redundancies and unnecessary data to shorten the length
101. synchronous Communications Mode n 0 5 0r6 5 Asynchronous with data buffering Same as INO Error control with data buffering Same as ING Asynchronous with data buffering Same as INO Data Set Ready DSR Control n Oor1 0 Force DSR high on Let DSR follow CD Self Test Commands n 0 1 30r6 None Abort Stop any test in progress Local analog loop test Local digital loopback test Remote digital loopback test View Current Configuration n a Displays the active modem settings Store Current Configuration n 0 None Store active modem settings in NVRAM load them at power on or following the ATZ command instead of loading the factory defaults from ROM Select Stored Configuration for Hard Reset n 0 0 Select stored configuration O on power up For backward compatibility with some software Not supported responds ERROR Store Telephone Number n 0 1 2 0r3 x Dialing string None Stores telephone dial string x in memory location n Dial the stored number using the command ATDS n 65 RASFinder User Guide 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 Command Values Defaults Description Command Values Defaults
102. t bit per channel in every sixth frame for signaling The line signal bits robbed from the speech part conveys sufficient pre ISDN telephony signaling information with the remaining line signal bits providing sufficient line signaling bits for recreating the original sound See robbed bit signaling Blue Alarm An error indication signal consisting of all 1s indicating disconnection or attached device failure Contrast Red Alarm and Yellow Alarm Bps bits per second A unit to measure the speed at which data bits can be transmitted or received Bps differs from baud when more than one bit is represented by a single cycle of the carrier Bridges 1 A functional unit that interconnects two local area networks that use the same logical link protocol but may use different medium access control protocols 2 A functional unit that interconnects multiple LANs locally or remotely that use the same logical link control protocol but that can use different medium access control protocols A bridge forwards a frame to another bridge based on the medium access control MAC address 3 In the connection of local loops channels or rings the equipment and techniques used to match circuits and to facilitate accurate data transmission Buffer A temporary storage register or Random Access Memory RAM used in all aspects of data communications which prevents data from being lost due to differences in transmission speed Keyboards serial ports muxes and
103. ter and finally double clicking on the Router Configuration icon Setup Menu The Router Setup menu consists of 14 buttons in which you can point and click and two status fields The 12 buttons four columns of three buttons each in the upper part of the Router Setup window allow you to display and change the protocol stacks define the output of the RASFinder perform network management functions test the communications link print messages received from the target RASFinder and download setup information to the RASFinder Note The RASFinder does not support the Frame Relay function however the Frame Relay button is not dimmed If at any time the PPP SLIP button becomes dimmed click on the Frame Relay button then click on the check mark in front of the word Enable in the upper left corner of the Frame Relay Setup screen to disable the Frame Relay function and re enable PPP SLIP At the bottom of the screen are two buttons to open the on line Help system MultiRouter Setup Help and end Exit a Router Setup session Just above these buttons are two fields that display the current version number of the software Router Version and the Router Status which is usually Running Protocol Stacks Device Drivers Other Setup Actions PPP SLIP SNMP Diagnostics or Ease Router Version 2 21 Router Status Running 28 MTASR3 200 Chapier 4 MultiRouter Software IP Setup The I
104. termines the behavior of functional units in achieving communication 2 In Open Systems Interconnection architecture a set of semantic and syntactic rules that determine the behavior of entities in the same layer in performing communication functions 3 In SNA the meanings of and the sequencing rules for requests and responses used for managing the network transferring data and synchronizing the states of network components 4 Synonymous with line control discipline PSTN Public Switched Telephone Network A worldwide public voice telephone network that is used as a telecommunications medium for the transmission of voice data and other information Public Data Network PDN A packet switched network that is available to the public for individual subscriber use Typically controlled by a government or a national monopoly Public Switched Telephone Network PSTN The group of circuit switching voice carriers which are commonly used as analog data communications services Pulse Code Modulation PCM 1 In data communication variation of a digital signal to represent information for example by means of pulse amplitude modulation PAM pulse duration modulation PDM or pulse position modulation PPM 2 Transmissions of analog information in digital form through sampling and encoding the samples with a fixed number of bits Pulse dialing One of two methods of dialing a telephone usually associated with rotary dial phones Compar
105. tes relating to electrical equipment designed for use within certain voltage limits both amended by Council Directive 93 68 EEC of 22 July 1993 on the harmonization of CE marking requirements 60 MTASR3 200 Appendices Appendix D AT Command Summary This section summarizes your modem s AT commands For detailed information on the commands download ZPXHELP EXE from the Multi Tech BBS see Call the Multi Tech BBS in Chapter 3 AT Commands Command AT lt CR gt Escape Sequence Values Description Command Values Description Command Values Description Command Values Description Command Values Description Command Values Description Command Values Default Description Command Values Default Description n a Puts the modem in command mode and optionally issues a command while remaining online Type AT and up to ten command characters then press ENTER Used mostly to issue the hang up command ATH lt CR gt AT Attention Code n a The attention code precedes all command lines except A and the escape sequence ENTER Key n a Press the ENTER key to execute most commands Detect AT amp T s call card tone n a This symbol placed in dialing string enables the modem to detect AT amp T s call card tones to access user s calling card when originating an on line connection ATDT 1028806127853500 123456789 access phone number Credit Card number
106. that are missing in SNMP but is also more complex Ping a utility that allows a user at one system to determine the status of other hosts and the latency in getting a message to that host Ping uses ICMP Echo messages Whois NICNAME Utilities that search databases for information about Internet domain and domain contact information per RFC 954 ftp ds internic net rfc rfc954 txt Traceroute a tool that displays the route that packets will take when traveling to a remote host RASFinder User Guide Internet Protocol IP 10 IP is the Internet standard protocol that tracks Internetwork node addresses routes outgoing messages and recognizes incoming messages allowing a message to cross multiple networks on the way to its final destination The IPv6 Control Protocol IPV6CP is responsible for configuring enabling and disabling the IPv6 protocol modules on both ends of the point to point link IPV6CP uses the same packet exchange mechanism as the Link Control Protocol LCP IPV6CP packets are not exchanged until PPP has reached the Network Layer Protocol phase IPV6CP packets received before this phase is reached are silently discarded See also TCP IP Before you install TCP IP on your network you need to establish your Internet addressing strategy You first choose a domain name for your company A domain name is the unique Internet name usually the name of your business that identifies your company For example Multi Tech
107. tion String Initialization Response or Connect Response values are different from the defaults in the dialog box refer to your modem user documentation and change the default values to match your modem Click on OK when you are satisfied with all your selections You are returned to the Windows program Start the MultiRouter Configuration program Windows 3 1x Double click on the Router Configuration icon in the Program Manager Windows 95 Click on Start gt gt Programs gt gt MultiRouter gt gt Router Configuration The Dialing Router dialog box is displayed while software is dialing the remote RASFinder The Reading Setup dialog box is displayed MultiRouter Reading Setup Date Stamp Feb 6 1998 Size bytes 36072 Checksum 0x1B18 The Router Setup dialog box is displayed This is the dialog box of the remote RASFinder Refer to Chapter 4 for a description of each dialog box For a detailed description of each field within a dialog box refer to the on line helps provided within your MultiRouter software MultiRouter Router Setup x Protocol Stacks 7 Device Drivers Other Setup Actions Spanning Tree Frame Relay Filtering Download Setup Router Version 2 21 Router Status Running After you have changed the configuration of the remote RASFinder click on the Download Setup button to update the configuration The remote RASFinder will be brought down the new configuration written
108. tion has multiple physical networks you must make them appear as one to external users This is done via subnetting a complex procedure best left to ISPs and others experienced in IP addressing Since IP addresses and domain names have no inherent connection they are mapped together in databases stored on Domain Name Servers DNS If you decide to let an Internet Service Provider ISP administer your DNS server the ISP can assist you with the domain name and IP address assignment necessary to configure your company s site specific system information Domain names and IP addresses are granted by the InterNIC To check the availability of a specific name or to obtain more information call the InterNIC at 703 742 4777 MTASR3 200 Chapter 1 Introduction and Description A Typical Network Application A typical application of a RASFinder 200 Series is shown in Figure 1 2 In this application the LAN port is connected to a TCP IP LAN A remote node client is able to dial into WAN 1 on the RASFinder A PPP client is connected to WAN 2 and a Win95 Netware client is using WAN 3 All three remote users are able to access shared services on the LAN and access the internet via a shared internet port C Internet gt 0000 0000 T1 MUX IP Address 199 24 15 244 El tees bin Router or T1 IP Address 206 16 196 254 Unix Host IP Address 206 16 196 253 IP Address 206 16 196 250 IP Addres
109. tises the destination IP address and asks for the associated MAC address The station on the LAN that recognizes its own IP address will send an ARP response with its own MAC address An ARP message is carried directly in an IP datagram Other address resolution procedures have also been defined including those which allow a diskless processor to determine its IP address from its MAC address Reverse ARP or RARP provides a mapping between an IP address and a frame relay virtual circuit identifier Inverse ARP or InARP and provides a mapping between an IP address and ATM virtual path channel identifiers ATMARP The TCP IP protocol suite comprises two protocols that correspond roughly to the OSI Transport and Session Layers these protocols are called the Transmission Control Protocol and the User Datagram Protocol UDP Individual applications are referred to by a port identifier in TCP UDP messages The port identifier and IP address together form a socket Well known port numbers on the server side of a connection include 20 FTP data transfer 21 FTP control 23 Telnet 25 SMTP 43 whois 70 Gopher 79 finger and 80 HTTP TCP described in RFC 793 ftp ds internic net rfc rfc793 txt provides a virtual circuit connection oriented communication service across the network TCP includes rules for formatting messages establishing and terminating virtual circuits sequencing flow control and error correction Most of th
110. tly manage through the PU resources of the node such as attached links This term applies to type 2 0 type 4 and type 5 nodes only Point of Presence POP The central office s end points of the long distance carriers Point to Point Protocol PPP A protocol that lets a PC user access TCP IP Internet memeber using an ISDN terminal adapter or a high speed modem over a standard telephone line Port A location for input or output data exchange Computers muxes etc have ports for various purposes Primary Rate Interface PRI Used on ISDN In North America and Japan PRI is one 64Kbps D channel and 23 B channels Elsewhere it is one D channel and 30 B channels Primitive An abstract representation of interaction across the access points indicating that information is being passed between the service user and the service provider The OSI Reference Model defines four types of primitives Request Indication Response and Confirm Private Branch Exchange PBX A telephone exchange located on the customer s premises The PBX provides a circuit switching facility for telephone extension lines within the building and access to the public telephone network See also Exchange PROM Programmable Read Only Memory pronounced prom A permanent memory chip that can be programmed or filled by the customer after by the manufacturer has set initial values Contrast with ROM Protocol 1 A set of semantic and syntactic rules that de
111. to the unit and the unit will reboot Click on the Exit button when the downloading is complete The Hangup connection with Router dialog box is displayed Click on the Yes button to disconnect the phone connection to the remote site If the same telephone number is not going to be used again in the immediate future you may want to remove it from the Port Setup dialog box At the remote site reconnect the RASFinder to the serial port of the PC and from the Program Manager screen click on the Router Configuration Icon to verify that the RASFinder is running MTASR3 200 37 RASFinder User Guide LAN Based Remote Configuration Windows Sockets Compliant TCP IP Stack The configuration program requires a Windows Sockets compliant TCP IP stack Microsoft provides a TCP IP stack free for Windows for Workgroups 3 11 TCP IP protocol software must be installed and functional before the configuration program can be used 1 You must assign an internet IP address for the PC and for each node that will be managed by the configuration program Refer to the protocol software documentation for instructions on how to set the IP addresses Once you have completed this step you should be able to use the protocol Ping command for the PC host name You should also test the network interface configuration by Pinging another TCP IP device that is connected to the network 2 Install the MultiRouter software on the local PC and at the Windows Program Man
112. to which the rings are connected by means of bridges A backbone may be configured as a bus or as a ring 3 In a wide area network a high speed link to which nodes or data switching exchanges DSEs are connected 4 A common distribution core that provides all electrical power gases chemicals and other services to the sectors of an automated wafer processing system Background An activity that takes place in the PC while you are running another application In other words the active user interface does not correspond to the background task Bandwidth The transmission capacity of a computer channel communications line or bus It is expressed in cycles per second hertz the bandwidth being the difference between the lowest and highest frequencies transmitted The range of usable frequencies that a transmission medium will pass without unacceptable attenuation or distortion Bandwidth is a factor in determining the amount of information and the speed at which a medium can transmit data or other information Backward Explicit Congestion Notification BECN A bit that tells you that a certain frame on a particular logical connection has encountered heavy traffic The bit provides notification that congestion avoidance procedures should be initiated in the opposite direction of the received frame See also FECN Forward Explicit Congestion Notification MTASR3 200 Glossary Basic Rate Interface BRI An ISDN access interface type comprised
113. uides at Multi Tech s Web site At the Multi Tech Home Page http www multitech com click on Support then Manuals then RASFinder and you will find each of the guides listed by title e RASFinder 200 Series User Guide Remote Access Server RAS Client Setup User Guide e Remote Access Server Dial Out Redirector User Guide MTASR3 200 7 RASFinder User Guide TCP IP Transmission Control Protocol Internet Protocol TCP IP is a protocol suite and related applications developed for the U S Department of Defense in the 1970s and 1980s specifically to permit different types of computers to communicate and exchange information with one another TCP IP is currently mandated as an official U S Department of Defense protocol and is also widely used in the UNIX community Before you install TCP IP on your network you need to establish your Internet addressing strategy First choose a domain name for your company A domain name is the unique Internet name usually the name of your business that identifies your company For example Multi Tech s domain name is multitech com where com indicates this is a commercial organization edu denotes educational organizations gov denotes government organizations Next determine how many IP addresses you ll need This depends on how many individual network segments you have and how many systems on each segment need to be connected to the Internet You ll need an IP address for each network interfa
114. uit board Driver A software module that interfaces between the Operating System and a specific hardware device e g color monitors printers hard disks etc Also known as a device driver Drop and Insert The process where a portion of information carried in a transmission system is demodulated Dropped at an intermediate point and different information is included Inserted for subsequent transmission DTE Data Terminal Equipment A term used to include any device in a network which generates stores or displays user information DTE is a telecommunications term which usually refers to PCs terminals printers etc DTMF Dual Tone MultiFrequency A generic push button concept made popular by AT amp T TouchTone E E amp M A telephony trunking system used for either switch to switch or switch to network or computer telephone system to Switch connection EIA The Electronics Industries Association is a trade organization in Washington DC that sets standards for use of its member companies See RS 232 RS 422 RS530 Encapsulation A technique used by network layer protocols in which a layer adds header information to the protocol data unit from the preceding layer Also used in enveloping one protocol inside another for transmission For example IP inside IPX Errored Seconds ES Any second of operation that all 1 544M bits are not received exactly as transmitted Contrast Error Free Seconds Error Fre
115. umbering system used to represent binary values Hex uses the numbers 0 9 and the letters A F usually notated by an h e g 4CF h read four charley fox hex The result is that one hex digit represents a 4 bit value Implicit congestion management A method of informing the terminal that the network is busy This method relies on the end system protocol to detect and fix the congestion problem TCP IP is an example of a protocol using only implicit congestion management See also explicit congestion management In band Refers to the type of signalling over the conversion path on an ISDN call Contrast out of band Insufficient Ones A T1 error condition that is logged when fewer than one 1 in 16 Os or less than 12 5 average 1s density is received Inter Exchange Carrier IEC The long distance company LE who s central office provides the point of reference for T1 access Any common carrier authorized by the FCC to carry customer transmissions between LATAs Internet Refers to the computer network of many millions of university government and private users around the world Each user has a unique Internet Address Internet Address IP Address A unique 32 bit address for a specific TCP IP host on a network Normally printed in dotted decimal format e g 129 128 44 227 Internet Protocol IP A protocol used to route data from its source to its destination in an Internet enviroment The Internet Prot
116. when you are satisfied with all your selections If you clicked OK from the IPX Protocol Default Setup dialog box step 9 the IP Protocol Default Setup dialog box is displayed MultiRouter IP Protocol Default Setup Ethernet IP Address 200 2 9 1 Subnet Mask 255 255 255 0 Frame Type TYPE_I 2 WAN 1 IX Enable Address 200 2 10 1 Subnet 255 255 255 0 Remote 200 2 10 2 WAN 2 Remote X Enable Address 2002111 Subnet 255 255 255 0 Address 200 2 11 2 WAN 3 X Enable Address 200 2 12 1 Subnet 255 255 255 0 pomol e 200 2 12 2 To change the IP parameters proceed to the next step Clicking on the OK button advances to the WAN Ports Default Setup dialog box The WAN Ports Default Setup starts at step 20 The default Ethernet IP Address has to be changed to your unique LAN address Assign an acceptable unique IP address to the EtherNet port Change the default Subnet Mask and Frame Type to the values you have assigned to your LAN port The default WAN Addresses have to be changed to your unique WAN addresses Assign an acceptable unique WAN Address to each active WAN port Change the default Subnet Mask and Remote Address for each WAN port to the values you have assigned to your WANs Click on OK when you are satisfied with your selections MTASR3 200 Chapter 3 Software Loading and Configuration jen Speed Modem Type PE 115200 MultiModem ZDX Seri
117. y Information Request n 0 4 9 11 None Display default speed and controller firmware version Calculate and display ROM checksum e g 12AB Check ROM and verify the checksum displaying OK or ERROR Display default speed and controller firmware version Display firmware version for data pump e g 94 Display country code e g NA Ver 1 Display Diagnostic Information for the last Modem Connection i e DSP and Firmware version Link Type Line Speed Serial Speed Type of Error Correction Data Compression Number of past Retrains etc MTASR3 200 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 Command Values Default Description Ln LO L1 L2 L3 Mn MO M1 M2 M3 Nn NO N1 O0 O1 03 Qn Q0 Q1 Sr n sr Vn VO V1 MTASR3 200 Appendices Monitor Speaker Volume n 0 1 2 or3 2 Select low volume Select low volume Select medium volume Select high volume Monitor Speaker Mode n20 1 2 0r3 4 Speaker always off Speaker on until carrier signal detected Speaker always on when modem is off hook Speaker on until carrier is detected except while dialing Modulation

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