Clear To Send Pin 5, CTS CB, Test Voltage Pin 9 | Black Box MD1640A

APPENDIX I: RS232C Interface Specifications

Clear To Send - Pin 5, CTS (CB)

Direction: from modem

The CTS line indicates to the terminal that the Series II Modem will transmit any data present on the Transmit Data line (pin 2).

Data Set Ready - Pin 6, DSR (CC)

Direction: from modem

DSR On indicates that the Series II Modem is in the data mode and is connected to the communications channel. This signal will be on during analog-loop-test mode.

Signal Ground - Pin 7, SG (AB)

The SG lead is connected to signal ground of the modem. It establishes the common ground reference for all other interface signals.

Data Carrier Detect - Pin 8, CD (CF)

Direction: from modem

DCD On (positive voltage) indicates that data carrier has been received from the other modem. This circuit will not normally turn on in the presence of message circuit noise or out-of-band signals. There is a one second delay between when the carrier tone has been detected and when the CD circuit is turned on.

This signal goes off if received data carrier falls below the receiver threshold for more than 37 mSec. When CD is off, the Received Data circuit (pin 3) is held to the marking state.

Test Voltage - Pin 9, XV

Direction: from modem

The XV lead has 330 ohms of resistance to +12 volts DC. This lead may be used to strap other signals high. For example, if the terminal does not supply a DTR (Data Terminal Ready) signal, Pin 9 may be jumpered to Pin 20 (DTR) on the RS232 connector or in the cable to force DTR on.

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Image 192

Black Box MD1640A, MD1641A manual Clear To Send Pin 5, CTS CB, Data Set Ready Pin 6, DSR CC, Signal Ground Pin 7, SG AB

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 Callback Security and Remote Configuration Modem TestingRegisters DIP-Switch Settings Appendix a TroubleshootingOther Appendixes Introduction How To Use This Manual Introduction and Description Installation and Connection Software ConfigurationAT Command Mode Operation Manual Dial and Automatic Answer Callback and Remote Configuration Testing Your ModemDIP-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 Disabling Error Correction AT &F S0=0 X4 &E14 MAT &F S0=0 X4 &E0 M Manual Dial and Automatic Answer Dialing/On-Line/Answering Series II Intelligent DATA/FAX Modems Manual Dial Backup Call Termination 336+ Only Dial Backup and Leased Line Restoral 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 Dialing Commands Dialing Action Commands Dial Command DContinuous Redial a or Dialing a Stored Number N DTR Dialing $D Dial Modifier Commands Voice/Data Dialing $VDPulse or Tone Dial P or T Set Pulse Dial Ratios &P Automatic Pauses in DialingLong Space Disconnect Y Return to Command Mode after Dial Command Execution Reverse the Mode of Operation RWait 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 Modem Reset Z 32terbo Enable/Disable #V 336 OnlyUnix 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 Fallback Modes When On-Line #F Enable/Disable Lowspeed Fast Connect $FC 336+ OnlyCleardown at Disconnect &CD 7 RS232C Interface Control Commands Auto Speed Detect #ACarrier 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 Normal Mode Modem Flow Control On &E11 Send Xon/Xoff Characters #XHewlett-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 = Speed Conversion Commands Enq/Ack Pacing 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 On-Line Diagnostics L8 Listing Current Operating Parameters L5 L7Listing S-Register Values L6 On-line diagnostics information On or Off Hook H Break Atcr Line Probe Commands Force Answer Mode aExiting 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 Escape Code Character Return 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 S13 Remote Configuration Escape Character S15 Callback Time DelayS11 Tone Dialing Tone Spacing and Duration S16 Callback Attempts S17 Changing Break TimeS18 Automatic Leased Line Restoral 336+ Only S19 Dial-Back Timer 336+ Only S24 PBX/CBX Disconnect Drop Time for DSR/CTS/CDS25 DTR Dropout Time S26 Failed Password Attempts S29 Local Inactivity Timer S30 Inactivity Timer S32 Time Elapse for Escape Sequence S36 Time Between DTR Inactive and Modem Off-Hook S37 Time Between DTR Active and Modem On-HookS48 Program V.34bis Connect Speeds Reading and Assigning S-Register Values Examples of Assigning Values AT Command and S-Register Summary Examples of Reading ValuesATS0=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 Remote Configuration and Callback Security AT Commands Assign Passwords for Callback Phone Numbers #CBNCallback 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 Appendix B Dial Pulse and Tone-Dial Frequencies Dial PulsesTone Dial Frequencies 697 770 852 941 1209 Digits 1336 1633 Appendix C Command Summary CommandDescription $An BSn $BAnCDn DsNd DFn DPn$Dn $En $EBn#Fn $FCn Command Values Description $Hn #Ln $MBnNdNe #Pn $RnRFn 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 Appendix D DIP-Switch Summary Asynchronous ModeDIP-Switch Condition Effect Synchronous Mode 166 Appendix E S-Register Summary Appendix E S-Register Summary S13 S15 S24 S36 Appendix F Result Code Summary EffectDigit 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 Delayed Phone Numbers RLD Command Listing Forbidden Phone Number RLF 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 Transmit Clock Pin 15, TC DB Receive Clock Pin 17, RC DDData Terminal Ready Pin 20, TR or DTR CD Ring Indicator Pin 22, RI CE Terminal Busy Out of Service Pin 25, OOSExternal 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