Multi-Tech Systems MT2834BLR, MT2834BR manual Dial-Up and Leased Lines

Page 16

Chapter 2 - Installation

2.5Dial-Up and Leased Lines

Connection to the phone system is made via RJ11 type jacks such as an RJ11C or RJ11W. It can also be connected to an RJ41 or an RJ45S jack, but would not use these jack's dB-level programming features. The MT2834 is designed to transmit at a permissive level of -11dB.

To connect the modem to the phone lines, plug one end of the RJ11 cable that is provided with the modem into the corresponding DB9 or RJ11 connector (dependent upon card cage used) located on the back plane of the modem rack and the other end into the phone-company-provided RJ11 or RJ11W modular phone jack. Make sure that DIP-Switch #10 is in the UP position (default) when in dial-up mode.

Although the majority of installations involves dial-up lines, the MT2834 also connects to two-wire leased lines (sometimes referred to as dedicated, private, or 3002 lines).

To connect the modem to leased lines, first determine the type of line termination provided by the phone company. Most phone companies provide a terminal block with a pair of screws. Some provide a conventional RJ11 type of connector. If the RJ11 connector is used, you can use the same cable that you use for dial-up connection. If the screw terminal type connector is used, you may need to order the #CA167 cable from Multi-Tech Systems.

Make two DIP-Switch setting changes on the modem's PC board. The first involves placing DIP-Switch #10 in the DOWN position (changes the modem from dial-up to leased line operation). The second DIP-Switch change requires that one of the two modems on the leased line circuit is set to "originate", and the other is set to "answer". To do this, change the setting of DIP-Switch #5. When you changed the DIP-Switch #10 setting, you also changed the function of DIP-Switch #5. Now the UP position selects answer mode frequencies while the DOWN position selects originate mode frequencies. Place DIP-Switch #5 in the UP position on one of the two modems, and on the other modem, place Switch #5 DOWN. It doesn't matter which is which, just so you have local and remote modems in opposite modes.

16

Image 16

Contents User Guide Revision Date Description Contents AT Commands and S-Register Summary Introduction Features IntroductionHow to Use This Manual Installation Preliminaries Card CageSerial Cable Telephone LineInstallation PC Board Controls DIP-Switch Settings Switch Function Position EffectAnswer/Originate Originate call Async/Sync/Leased Line OOS Busy Out Toggle Switch Dip Switch Settings #13 Position EffectOut of Service/Test Jumper 2 MI/MIC Option JumperDial-Up and Leased Lines Modem LED Indicators On-Line Diagnostics Installation Serial Port Limitations How Can You Identify Your Uart Type? MSD Uart Identification, Screen Configuring Your Software Configuring Software for Your ModemPC Initialization Strings AT &F X4 S0=0 MMEW Modem Initialization Setup Changing Default Parameters Macintosh InitializationConfiguring Software for Your Computer MEW Configuration Parameters ScreenConfiguring Software for the Remote System Terminal EmulationWhen to Disable Data Compression File Transfer ProtocolsDisabling Error Correction AT &F S0=0 X4 &E14 MModem Commands Modem AT Commands Commands = 0, 1, 2 or DP0 #F2 Command Values Default = speed Q0 selects Result Codes displayed Reads value of S-Register r and displays value = 4 or Tone Callback Security Commands Command Break Atcr Values Default DescriptionCallback password with xxxxxx being callback password Remote Configuration Remote Configuration Procedures4 V.25bis Commands Password CommandsCSPs Registers Escape Code CharacterLine Feed Character S10 Carrier Loss Disconnect Delay Time S25 DTR Dropout Time Result Codes S36 Time Between DTR Inactive and Modem Off-HookTerse Verbose No Dial Tone Busy No Answer AT Commands and S-Register Summary Modem Testing Local Analog Loopback Test/V.54 Loop UuuuDigital Loopback Test/V.54 Loop 2 Local/Manual Digital Loopback Test local / manual Digital Loopback Test/V.54 Loop 2 Remote/Automatic Digital Loopback Test remote / automaticLocal Analog Loopback Test Synchronous Mode Local Analog Loopback Test Syncronous ModeDigital Loopback Test Local/Manual Synchronous Mode Digital Loopback Test Local / manual SyncronousDigital Loopback Test Remote/Automatic Synchronous Mode Digital Loopack Test remote / automatic SyncronousWarranty and Service Limited Warranty Tech Support ServiceRecording Modem Information Using FlashPro to Upgrade Modem Firmware Upgrading the MT2834BRSafety Warnings Internet Babt Requirements Compliance with Babt Requirements European Low Voltage Directive Compliance with BS6789 .1 and Part Compliance with BS6328 Part Appendices Appendix a Appendix a Canadian Limitations Notice Appendix B Technical Specifications Data Rates modemFlow Control 2400 & 1200 bps Frequency Stability Index Index Index Index MNP SCC XON/XOFF S000316