#X0 =, #X1 = | Black Box MD1640A, MD1641A specification

CHAPTER 5: Command Mode

5.4.10Compression, Error Correction, Flow Control, Pass-Through and Pacing Commands

The Series II Modem has a variety of commands to control its error correction and data compression options. These additional commands are listed below. (Remember to precede each command with the AT characters.) Factory-default settings are marked with asterisks.

Normal/Auto-Reliable/Reliable Mode Commands:

&E0 = Normal Mode

&E1 = Auto-Reliable Mode*

&E2 = Reliable Mode

Modem-Initiated Flow Control Commands:

&E3 = Disables flow control (no flow control)

&E4 = Hardware flow control (CTS on/off and RTS on/off)*

&E5 = Xon/Xoff flow control

Xon/Xoff Pass-Through Commands:

&E6 = Modem responds to Xon/Xoff characters, but does not allow Xon/Xoff characters to pass through to remote site.*

&E7 =	Modem responds to Xon/Xoff characters, and allows
	them to pass through to remote site.
#X0 =	Selects single Xoff character until Xon level returns*
#X1 =	Selects multiple Xoff characters after buffer levels is
	full.

*Factory-default setting.

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Image 82

Black Box MD1640A, MD1641A manual #X0 =, #X1 =

Contents

Series II Modem Series II Modem 336+ Series II Modems Series II Intelligent DATA/FAX Modems Contents Command Mode Manual Dial and Automatic Answer Modem Testing Callback Security and Remote ConfigurationRegisters Appendix a Troubleshooting DIP-Switch SettingsOther Appendixes Introduction How To Use This Manual Introduction and Description AT Command Mode Operation Installation and ConnectionSoftware Configuration Manual Dial and Automatic Answer Testing Your Modem Callback and Remote ConfigurationDIP-Switches What is in Your Modem Package? Modem Features Fax Features Technical Specifications Command Buffer Mode of OperationIntelligent Features Modulation Lease Line Restoral Fax CarrierFrequencies Carrier Frequencies Indicators ConnectorsDiagnostics Operating Temperature Power Modem LED Indicators Introduction and Description Controls on PC Board Installation and Connection Safety Warnings Installation Series II Modem 336 MD1641A Connections Series II Intelligent DATA/FAX Modems Is Your Series II Modem Ready for Use? Operating Your Series II Modem Answer/Originate Voice/Data Toggle Switch Simple Operations Introduction Serial Port Limitations Software Configuration How Can You Identify Your Uart Type? 16550 Uart and Windows COMnFIFO=1 Configuring Your Software Configuring Software for Your Modem AT &F X4 S0=0 M Changing Default ParametersPC Initialization Strings AT &F X4 S0= 2 M AT &F X4 M Other ParametersMacintosh Initialization AT &F X4 &E5 &E13 &D0 M Software Configuration Configuring Software for Your ComputerConfiguring Software for the Remote System AT &F9 &W0 CR File Transfer Protocols When to Disable Data CompressionTerminal Emulation User Guide for Series II Modems AT &F S0=0 X4 &E14 M Disabling Error CorrectionAT &F S0=0 X4 &E0 M Manual Dial and Automatic Answer Dialing/On-Line/Answering Series II Intelligent DATA/FAX Modems Dial Backup and Leased Line Restoral 336+ Only Manual Dial Backup Call Termination 336+ OnlyAutomatic Leased Line Restoral Operation 336+ Only Series II Intelligent DATA/FAX Modems Dial-Up Operation 336+ Only Manual Call Origination Automatic Answering Manual Answering Handshaking Details Call Termination Abort Timer Command Mode AT Command Editing Command Mode Functional Modes Summary of AT Commands Functional Modes Memorize Phone Numbers #L2 #L0#L1 #L3 $BA1 E14E15 +++ATCR Sr= Result CodesSr? #RCBNxx Q0 Series II Result Codes Q1 Standard AT Result Codes Dial Command D Dialing Commands Dialing Action CommandsContinuous Redial a or Dialing a Stored Number N DTR Dialing $D Voice/Data Dialing $VD Dial Modifier CommandsPulse or Tone Dial P or T Automatic Pauses in Dialing Set Pulse Dial Ratios &PLong Space Disconnect Y Reverse the Mode of Operation R Return to Command Mode after Dial Command ExecutionWait for New Dial-Tone W Quiet Answer @ Flash On HookCalling Card Detect Tones $ ATDT101099907247465500$0123 4567 8910 Number Linking NN Phone Number Memory CommandsStoring Phone Numbers D...N ATX4&E1&E5&E13&E15DT17247465500N3 Listing Numbers Stored in Memory L Configuration and Default Storage Commands Loading Factory Defaults &F 32terbo Enable/Disable #V 336 Only Modem Reset ZUnix Uucp Spoofing $SP Async/Sync Mode Switching &M Synchronous Transmit Clock Select &X Result Codes Enable/Disable and No Response Answer Q Command Response Result Code CommandsEcho Command Mode Characters E Chap 5 Command Modeter Result Codes Verbose/Terse Result Codes Basic and Extended and Call Progress Selection Command Mode Guard Tones &G Phone Line Conditioning CommandsEnable/Disable Trelis Coded Modulation #T Phone Line Monitoring Speaker M Enable/Disable Lowspeed Fast Connect $FC 336+ Only Fallback Modes When On-Line #FCleardown at Disconnect &CD Auto Speed Detect #A 7 RS232C Interface Control CommandsCarrier Detect Control &C Data Terminal Ready Control &D Clear to Send Control &R CTS/RTS Interaction Control &RF Error Correction CommandsData Set Ready Control &S DSR/CD Interaction Control &SF Normal Mode &E0 Auto-Reliable Mode &E1 Originate Mode Reliable Mode &E2Mode Select #L Answer Mode Enable/Disable Auto Reliable Fallback Character $F Auto-Reliable Buffering $A Retransmit Count $R Flow Control Commands Error Correction/300bps $E Hardware Flow Control &E4 Modem Terminal Xon/Xoff Flow Control &E5 Xon/Xoff Pass-Through &E7 Send Xon/Xoff Characters #X Normal Mode Modem Flow Control On &E11Hewlett-Packard ENQ/ACK Pacing &E9 Terminal/Computer Initiated Pacing &E13 Maximum Block Size &BS Asynchronous Word Length Selection $EB 336 Only Parity Selection #P #X0 = #X1 = Enq/Ack Pacing Commands Speed Conversion CommandsNormal Mode Modem Flow Control Commands Speed Conversion $BA Modem Baud Rate $MB Serial Port Baud Rate $SB Immediate Action Commands Help Screens $H Inquiry for Product Code Windows 95 Autodetect Inquiry Listing Current Operating Parameters L5 L7 Listing On-Line Diagnostics L8Listing S-Register Values L6 On-line diagnostics information On or Off Hook H Break Atcr Force Answer Mode a Line Probe CommandsExiting Command Mode, Going Back On-Line O DP1 Format of Line Probe Graph or Table Commands DF0Immediate Action Line Probe Commands DF1 Number of Rings Until Modem Answers Rings Which Have Occurred Return Character Escape Code CharacterLine Feed Character Wait Time for Dial Tone Time for Carrier Abort TimerBackspace Character Pause Time for Comma S10 Carrier Loss Disconnect Delay Time Carrier Detect Response Time S15 Callback Time Delay S13 Remote Configuration Escape CharacterS11 Tone Dialing Tone Spacing and Duration S17 Changing Break Time S16 Callback AttemptsS18 Automatic Leased Line Restoral 336+ Only S24 PBX/CBX Disconnect Drop Time for DSR/CTS/CD S19 Dial-Back Timer 336+ OnlyS25 DTR Dropout Time S26 Failed Password Attempts S29 Local Inactivity Timer S30 Inactivity Timer S32 Time Elapse for Escape Sequence S37 Time Between DTR Active and Modem On-Hook S36 Time Between DTR Inactive and Modem Off-HookS48 Program V.34bis Connect Speeds Reading and Assigning S-Register Values Examples of Assigning Values Examples of Reading Values AT Command and S-Register SummaryATS0=30S3?, and ATS7=55S7? Callback Security Remote Configuration Callback Feature Description Callback Security and Remote Configuration Remote Configuration Description Error To change your Remote Configuration feature status To turn your modems Callback Security feature on and off To set parity of the password/message prompt AT#CBN0xxxxxxxxxxCR AT#IxxxxxxxxxxCR xxxxxxxxxx from TableAT#DB2CRÊorÊAT#DB1CR AT#CBN1xxxxxxxxxxCR AT#SyyyyyyyyyyCR yyyyyyyyyy from Table Callback Operational Sequence Procedures Password Remote Configuration Procedures Remote Configuration Operation Procedures StepProcedure Assign Passwords for Callback Phone Numbers #CBN Remote Configuration and Callback Security AT CommandsCallback Security Enable/Disable #DB Erase Callback Password #RCBNxx Change Login Password #IChange Setup Password #S Erase Callback Phone Number #RDNxx Callback Time Delay S15 Remote Configuration/Callback Security S-RegistersRemote Configuration Character S13 Callback Attempts S16 Failed Password Attempts S26 Local Inactivity Timer S29 Modem Testing Modem Testing Local Analog Loopback Test/V.54 Loop Digital Loopback Test/V.54 Loop 2 Local/Manual Digital Loopback Test local/manual 119 Digital Loopback Test/V.54 Loop 2 Remote/Automatic Digital Loopback Test remote/automatic Back-to-Back Test 122 Synchronous Mode Testing Local Analog Loopback Test Synchronous Mode Digital Loopback Test Local/Manual Synchronous Mode Digital Loopback Test Remote/Automatic Synchronous Mode 126 DIP-Switch Settings DIP-Switch Option Settings Series II Modem 336+ MD1640A PC Board 129 Switch #4 AS/400 Mode Synchronous Mode/Leased Line/Dial-Up 130 131 132 133 134 135 Speaker Volume Control Recording Option Configurations Function Position Effect DIP Switches #13-16 AT vs. Series II Result Codes Possible Causes and Solutions None of the LEDs Light When the Modem Is On Modem Does Not Respond to Commands 141 Modem Dials But Cannot Make a Connection 143 Modem Cannot Connect When Answering Modem Disconnects While On-line File Transfer Is Slower Than It Should Be Am Losing Data Am Getting Garbage Characters on the Monitor Contacting Black Box Recording Modem Information Modem Model No Making the Call Shipping and Packaging Upgrading the Series II Modem’s Firmware Dial Pulses Appendix B Dial Pulse and Tone-Dial FrequenciesTone Dial Frequencies 697 770 852 941 1209 Digits 1336 1633 Description Appendix C Command SummaryCommand $An CDn BSn$BAn DsNd DPn DFn$Dn #Fn $En$EBn $FCn Command Values Description $Hn $MBn #LnNdNe $Rn #PnRFn SFn Sr=n$SBn $SPn #Tn $VDn 160 #Xn #CBNyyxxxxxx Callback Security/Remote Configuration Command SummaryCommand Description #DBn + Dxxxxxx???Nxx Password Command Summary 25bis Commands Asynchronous Mode Appendix D DIP-Switch SummaryDIP-Switch Condition Effect Synchronous Mode 166 Appendix E S-Register Summary Appendix E S-Register Summary S13 S15 S24 S36 Effect Appendix F Result Code SummaryDigit Words 172 Appendix F Result Code Summary Delayed and Forbidden Numbers Appendix G V.25bis Operation Appendix G V.25bis Operation 25bis Operation 25bis DIP-Switches 25bis Set-Up and Initialization 25bis Mode AT Commands 25bis AT Commands 25bis Responses Result Codes Enable/Disable V.25bis Mode $V Command Change Serial Baud Rate CSP Command Dial Phone Number Provided CRN Command Listing Forbidden Phone Number RLF Command Listing Delayed Phone Numbers RLD CommandDisregard or Connect to Incoming Calls DIC or CIC Command DTR Dialing $D Command ITU V.25bis Country Specific Information Italy Austria France Belgium Singapore Appendix H Series II modem cables Appendix H Series II Modem Cables 188 Appendix I RS232C Interface Specifications Appendix I RS232C Interface Specifications Direction to modem Received Data Pin 3, RD BBRequest To Send Pin 4, RTS CA Direction from modem Data Set Ready Pin 6, DSR CC Signal Ground Pin 7, SG ABClear To Send Pin 5, CTS CB Data Carrier Detect Pin 8, CD CF Receive Clock Pin 17, RC DD Transmit Clock Pin 15, TC DBData Terminal Ready Pin 20, TR or DTR CD Terminal Busy Out of Service Pin 25, OOS Ring Indicator Pin 22, RI CEExternal Transmit Clock Pin 24, XTC Appendix J Regulatory Information FCC and IC EMI/RFI Statements Appendix J Regulatory Information FCC Part 68 Regulations for Telephone-Line Interconnection 196 Canadian Limitations Notice 197 Copyright 2000. Black Box Corporation. All rights reserved