Black Box MD885C-R2, MD885AE-R2, MD885A-R3, 34336 user manual Modem

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Modem 34336

•Enable — The Modem will check for X-ON/X-OFF (DC1/DC3)

flow control characters received from the remote modem to determine whether to stop or start/restart data transmission to the remote modem. A DC3 (or DC2) control character will cause the Modem/Modem 3242–S to stop data transmission and hold data in its buffer until it receives a DC1 control character (which instructs the modem to resume transmission).

•Disable — The Modem will ignore X-ON/X-OFF (DC1/DC3) flow control characters received from the remote modem.

•Slaved — Link flow control is controlled by the DCE-DTE Flow Control option. If DCE-DTE Flow Control is set to NONE or CTS, Link Flow Control is disabled. Otherwise, it is enabled.

The V.32 Mode option Hayes, V.25 bis, Dumb, and Leased-Line modes (except V.33)

This option is used to select CCITT V.32 bis operation or V.32 extended operation.

When V.32 bis mode is selected (factory-default setting), the follow-ing are available: RRP (Rate Renegotiation Procedure); data rate of 7200 bps; RATE screen that allows you to manually initiate RRP. RRP enables the modem to auto-matically fall back or fall forward to a lower or higher data rate during data transmission in response to changes in signal quality. Selecting V.32 bis mode makes RRP available as an option; however, RRP will not function unless it is enabled (the default setting is enabled.)

When V.32 bis mode is selected, a RATE screen is available from MAIN MENU screen 3. The RATE screen can be used to manually initiate RRP for diagnostic purposes. For additional informa-tion, see Section 7.6, Diagnostic Monitoring: Status Screens.

When V.32 bis mode is selected, 7200 bps can be selected as the maximum or minimum data rate (using the Speed Limit option). When V.32 bis is not selected, 7200 bps operation is not available.

NOTE

By definition, V.32 bis operation includes the ability to operate at 12,000 and 14,400 bps. Therefore, only the Modem is a true V.32 bis modem. However, when the V.32 bis mode is selected on the Modem 32192, it will support the following options as well: RRP; 7200 bps data rate; the RATE screen.

The V.32 extended mode disables the V.32 bis features. In V.32 extended mode, the Modem’s functional ability is identical to that of previous models of this modem series (the MD833A model prior to incorporation of the CCITT V.32 bis recommendation.)

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Contents Modem FCC Information Table of Contents Table of Contents Diagnostics Table of Conents Specifications Specifications Quick Start InstallationFor all applications Quick StartFor leased-line applications For dialup applicationsFront-Panel LCD and Controls Front-Panel LCD and ControlsMR = TR =RS = CS =Quick Setup Dial Hayes Available Quick Setup ConfigurationsV25 Dial Async V25 Dial SyncQuick Setup 11 2-W Dial Quick Setup 12 2-W Dial V32/208 Quick Setup 07 2-W Leased ANSAT D 9,5551212 cr Basic OperationAT D 5551212 cr AT DP Synchronous V.25 bis Operation Asynchronous V.25 bis OperationCRN Pushbutton 1 Phone Pushbutton 2 Prog ENT Auto-Dial Failure Messages9600 6 2-WIREDIAL Bell 208 Operation Quick Setups 11 34/V.32 Dial Backup Slave-to-Master Inbound Transmission Problem Solving This page is intentionally left blank Methods For Selecting Options Modem Setup OptionsSelecting Options from the Front-Panel Setup Type Line Speed For Modem SETUPS. The first Options Modem Resultant Data RATE, bps SETTING, bpsModem 1 V.42 Error Correction Options Modem Modem Setup Options Modem Modem Setup Options Dialer Mode Data Format Options Modem See Section Remote Test Enable Disable Modem Setup Options Modem Setups Compromise Equalizers option is available for all modes Modem 8 V.33 and Bell 208A/B Options Options Accessible with Summary Setup only Modem Setup Options Modem Modem Setup Options Phone Number Storage Quick ResetGeneral Operation and Special Features Leased Line Auto-RecoveryCharacter Function Dialing Control CharactersDial Backup Dial Line Auto-Recovery AT &Z0=T555-4545/R DTR DialingDumb Mode And Bell 208 Operation TR MR RS CS Modem Security Operation Command Function EXAMPLE1 MEM.LOC.2 Password CommandsAT &Z1=/ASECURITY AT &Z5=/PYELLOW AT &Z0=/UCONNECTED Modem-Controlled Remote ControlControl Procedure Modem-to-Modem Control Procedure Using a Rack Controller General Operation and Special Features Remote control-address control mode Pin Function Diagnostic Interface ControlCommand Function Diagnostic Port CommandsConnect 003,022 CON 000003,22 Connect 3,22Address g,u Response Meaning ErrorDTE display Automatic Fallback Mode Description V.22 bis/BELL 212A/BELL 103 Fallback DefaultV.22 bis/V.22/V.21/V.23 Fallback Rate Renegotiation Procedure RRPRate Change Screen How to Enable or Disable RRP11 V.13 Operation Hayes Mode Autodialer Hayes Emulation ModeAT DT 9,212555-1234 or AT DT 9, 212 555 AT M2 V1 D 555-1212 S2=1OAT DT 9,555-1212 Exclamation FlashHayes Compatible Commands AT D3331234 AT D 555-1212 L5 AT S7=30 AT D9,3331234 Hayes Emulation Mode Registers AT S0=5 AT S0? S7?Modem Hayes Emulation Mode Selecting Options In Hayes Mode Hayes Mode Reference Tables Hayes Compatible Commands Product Code Or Checksum Speaker VolumeSpeaker Control Forced On-LineRead S Register Modify S RegisterTone Dialing Word/Digit Result CodeRecall Factory Configuration Forced Command StateLong-Space Disconnect Recall Stored User ProfileData Set Ready Control Asynchronous/Synchronous ModeRTS And CTS Options View Active Configuration, etc Test CommandsDefault User Profile Write Profile To MemoryBuffer Mode/Speed Conversion Store Telephone Number\B1 MNP Class LimitHayes Compatible Commands Digit Code Word Code Meaning Hayes Mode Result Codes105 S Register Functions Register Range Units Default DescriptionEnabling The V.25 bis Autodialer V.25 bis AutodialerV.25 bis Autodialer Commands 109 CIC V.25 bis Autodialer CommandsSection V.25 bis Dialing ParametersC, D, #, Dialing Parameters DTR Dialing In V.25 bis ModeV.25 bis Result Codes V.25 bis Result CodesSymptoms and Scope of The Problem When And Why To TestPhysical Inspection Overview Of Modem DiagnosticsDiagnostic Monitoring Status Screens How to Select and Activate Tests116 117 Analog Loopback Test Local Modem Diagnostics119 Analog Loopback Self-Test Albst External Analog Loopback Test Albx 122 External Analog Loopback Self Test Albst 124 Digital Loopback Test DLB Remote Digital Loopback Test RDL Remote Modem Diagnostics127 Remote Digital Loopback Self Test Pin Desig Function Source Nation IndicatorTable B-1. Quick Setup Configurations Appendix B Quick Setup ConfigurationsDumb LEASED2 Table B-1 . Quick Setup Configurations132 133 134 Introduction to Summary Setup Appendix C Summary SetupFigure C-1. How to access the Summary-Setup Screens Primary Options Setups Screen0 2 1 1 0 0 Primary OptionsDial Line Options 0 0 0 1 0 2 V42 1 V42Pump1 Pump2 Data Pump OptionsMisc1 Misc2 Miscellaneous OptionsAT Profiles AT Profiles ScreenFigure C-3. Changing the S Register Value REG ScreenAppendix D Jumpers Appendix D Jumpers Table D-1. Jumper Switch Functions NOM Statement 148 Copyright 1999. Black Box Corporation. All rights reserved
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MD885C-R2, MD885A-R3, MD885AE-R2, 34336 specifications

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