#Tn, $VDn | Black Box MD1640A, MD1641A manual

				APPENDIX C: Command Summary
Command	Values			Description
T	In Dial Comd.			Modem will tone-dial numbers following
				the T.
&Tn	n = 4 or 5			&T4 means Enable Response to Request for
				Remote Digital Loopback.
				*&T5 means Disable Response to Request
				for Remote Digital Loopback.
#Tn	n = 0 or 1			#T0 turns off Trellis Coded Modulation
				*#T1 turns on Trellis Coded Modulation
Un	n = 0, 1, 2, or 3			U0 places modem in Analog Loop
				Originate Mode.
				U1 places modem in Analog Loop Answer
				Mode.
				U2 places modem in Remote Digital
				Loopback test mode.
				U3 places modem in Local Digital
				Loopback test mode.
$VDn	n= 0 or 1			*$VD0 disables Voice/Data Dialing
				$VD1 enables Voice/Data Dialing
Vn	n = 0 or 1			V0 means Result Codes sent as digits (terse
				response).
				*V1 means Result Codes sent as words
				(verbose response).
#Vn**	n = 0 or 1			#V0 enables V.32terbo handshaking process
				#V1 disables V.32terbo handshaking process
W	In Dial Comd.			Wait for new dial-tone.
&Wn	n = 0 or 1			&W0 causes modem to store its current
				parameters in non-volatile RAM, and
				modem will load these for future sessions

instead of reading factory ROM defaults, unless &F command used.

*&W1 causes modem to not store parameters.

* Factory Default Setting

** 336 Model (MD1641A) Only	159

Image 160

Black Box MD1640A, MD1641A manual #Tn, $VDn

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 Installation and Connection Software ConfigurationAT Command Mode Operation 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 Mode of Operation Intelligent FeaturesCommand Buffer Modulation Fax Carrier FrequenciesLease Line Restoral Carrier Frequencies Connectors DiagnosticsIndicators 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 Changing Default Parameters PC Initialization StringsAT &F X4 S0=0 M AT &F X4 S0= 2 M Other Parameters Macintosh InitializationAT &F X4 M AT &F X4 &E5 &E13 &D0 M Configuring Software for Your Computer Configuring Software for the Remote SystemSoftware Configuration AT &F9 &W0 CR When to Disable Data Compression Terminal EmulationFile Transfer Protocols 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 #L0 #L1#L2 #L3 E14 E15$BA1 +++ATCR Result Codes Sr?Sr= #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 Flash On Hook Calling Card Detect Tones $Quiet Answer @ ATDT101099907247465500$0123 4567 8910 Phone Number Memory Commands Storing Phone Numbers D...NNumber Linking NN 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 Command Response Result Code Commands Echo Command Mode Characters EResult Codes Enable/Disable and No Response Answer Q Chap 5 Command Modeter Result Codes Verbose/Terse Result Codes Basic and Extended and Call Progress Selection Command Mode Phone Line Conditioning Commands Enable/Disable Trelis Coded Modulation #TGuard Tones &G 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 Error Correction Commands Data Set Ready Control &SCTS/RTS Interaction Control &RF DSR/CD Interaction Control &SF Normal Mode &E0 Auto-Reliable Mode &E1 Reliable Mode &E2 Mode Select #LOriginate Mode 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 Format of Line Probe Graph or Table Commands DF0 Immediate Action Line Probe CommandsDP1 DF1 Number of Rings Until Modem Answers Rings Which Have Occurred Return Character Escape Code CharacterLine Feed Character Time for Carrier Abort Timer Backspace CharacterWait Time for Dial Tone 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#IxxxxxxxxxxCR xxxxxxxxxx from Table AT#DB2CRÊorÊAT#DB1CRAT#CBN0xxxxxxxxxxCR 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 Change Login Password #I Change Setup Password #SErase Callback Password #RCBNxx Erase Callback Phone Number #RDNxx Remote Configuration/Callback Security S-Registers Remote Configuration Character S13Callback Time Delay S15 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 Appendix C Command Summary CommandDescription $An BSn $BAnCDn DsNd DPn DFn$Dn $En $EBn#Fn $FCn Command Values Description $Hn $MBn #LnNdNe $Rn #PnRFn Sr=n $SBnSFn $SPn #Tn $VDn 160 #Xn Callback Security/Remote Configuration Command Summary Command Description #DBn#CBNyyxxxxxx + 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 Received Data Pin 3, RD BB Request To Send Pin 4, RTS CADirection to modem Direction from modem Signal Ground Pin 7, SG AB Clear To Send Pin 5, CTS CBData Set Ready Pin 6, DSR CC 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