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AT&T 7400B User Manual

AT&T 7400B User Manual

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AT&T 7400B Data Module
User's Guide
555-020-707
Issue 1
November 1989

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Summary of Contents for AT&T AT&T 7400B

  • Page 1 AT&T 7400B Data Module User’s Guide 555-020-707 Issue 1 November 1989...

  • Page 2: Issue

    TO ORDER COPIES OF THIS MANUAL Call: AT&T Customer Information Center on 800-432-6600 In Canada Call 800-255-1242 Write: AT&T Customer Information Center 2855 North Franklin Road P.O. Box 19901 Indianapolis, Indiana 46219 Order: Document No. 555-020-707 Issue 1, November 1989 FCC Notice: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules.

  • Page 3: Table Of Contents

    CHAPTER 4: OPERATION AND CONFIGURATION CONFIGURATION PARAMETERS Operating Modes Issuing Commands From Data Mode to Command Mode and Back Dialing a Number Repeating a Command Storing a Telephone Number Automatic Answering Remote Site Use RESET AND CONFIGURATION RECALL 2-12 2-12 2-12...
  • Page 4 CHAPTER 5: TROUBLESHOOTING How to Use This Chapter APPENDIX A: AT COMMAND SET APPENDIX B: S-REGISTERS APPENDIX C: APPLICATION NOTES PBX Application Notes PC Applications Guide Procomm Plus Relay Gold Crosstalk XVI APPENDIX D: QUICK-REFERENCE SUMMARIES GL GLOSSARY...

  • Page 5: Preface: About This Guide

    DEFINITY Communications System 7400B Data Module User’s Guide PREFACE: ABOUT THIS GUIDE TYPOGRAPHICAL CONVENTIONS ORGANIZATION OF THIS GUIDE The purpose of this guide is to provide information for installing, operating, and maintaining the 7400B Data Module. Throughout this guide, command lines that you type are shown in typewriter-style characters, and responses that the 7400B Data Module returns are shown in italics.

  • Page 6: Related Documentation

    PREFACE: ABOUT THIS GUIDE Page ii RELATED DOCUMENTATION Chapter 5: Troubleshooting. Describes procedures for troubleshooting problems that may be encountered while configuring and operating the 7400B Data Module. Appendix A: AT Command Set. Contains an explanation of each AT command accepted by the 7400B Data Module. Appendix B: S-Registers.

  • Page 7: Chapter 1: Introduction

    RS-232-C) connects the terminal device to the 7400B Data Module, and a standard Digital Communications Protocol (DCP) interface (using a type D8W modular telephone cord) connects the data module to the digital PBX. An internal DIP-switch option allows the 7400B Data Module to be set for use either with or without a telephone.

  • Page 8: External Features

    CHAPTER 1: INTRODUCTION Page 1-2 EXTERNAL FEATURES Front Panel data metering option programmable control characters self-test at start-up local and remote loopback tests test duration timers voice terminal powered by the PBX is not affected if ac power is removed from the 7400B Data Module The external features of the front and rear panels of the 7400B Data Module and the separate power supply unit are described in this section.
  • Page 9 DEFINITY Communications System 7400B Data Module User’s Guide Description Connector POWER/ This red LED lights as long as power is applied to the data module. This LED TEST flashes during any test mode, except the start-up self-test. It also flashes along with the DATA LED if the connection with the PBX is lost.
  • Page 10 Table 1-2. Connector Description PHONE This connector accepts one end of the D8W telephone line cord used to connect a telephone or voice terminal to the data module. LINE This connector accepts one end of the D8W telephone cord that connects between the data module and the PBX wall jack.
  • Page 11 DEFINITY Communications System 7400B Data Module User’s Guide Power Supply Unit A separate power supply unit is required with the 7400B Data Module. This unit connects between a grounded AC outlet and the “POWER” connector at the rear of the data module. This power supply unit provides the necessary operating voltages for the data module.

  • Page 12: Chapter 2: Installation

    D6AP cord, as applicable) Figure 2-1 illustrates the needed hardware items for an arrangement without a telephone, Figure 2-2 shows the set up for using a telephone without adjunct equipment, and Figure 2-3 shows a similar setup with some typical adjunct equipment.
  • Page 13 CHAPTER 2: INSTALLATION Page 2-2 D8W CORD WALL JACK DEFINITY Communications System PERSONAL COMPUTER 7400B DATA MODULE Figure 2-1. Typical Standalone Installation 7400B Data Module User’s Guide CABLE POWER SUPPLY...
  • Page 14 CHAPTER 2: INSTALLATION DEFINITY Communications System 7400B Data Module Page 2-3 User’s Guide Figure 2-2. Typical Installation with Telephone...
  • Page 15 DEFINITY Communications System CHAPTER 2: INSTALLATION 7400B Data Module User’s Guide Page 2-4 Figure 2-3. Typical Installation with Telephone and Adjunct Equipment Requiring Auxiliary Power...
  • Page 16 DEFINITY Communications System 7400B Data Module User’s Guide About the Terminal Device Selecting an EIA-232-D Cable Selecting Data Communications Software The 7400B Data Module operates with any asynchronous data terminal device that has an EIA-232-D (or RS-232-C) serial port connector. If you are using a PC as your terminal, you will need a suitable data communications software package.
  • Page 17 D8W telephone cord for DCP connection between the 7400B Data Module and the PBX wall jack. If you are using the with-telephone option, you will need a second D8W telephone cord to connect between the data module and your telephone or voice terminal.

  • Page 18: Hardware Installation

    This section outlines procedures for setting the hardware options DIP switches on the Data Module, connecting the EIA-232-D cable, installing the power supply, and connecting the D8W telephone cord(s). To avoid possible shock hazards and damage to the Caution: equipment, you should perform the installation steps in the order given.
  • Page 19 Note: The factory-default settings of these switches are correct for the vast majority of applications. Check the default settings shown in Table 2-1 to determine whether you need to make any changes. Telephone Without Phone With Phone (factory-default) Data Metering On—enabled...
  • Page 20 DEFINITY Communications System 7400B Data Module User’s Guide To access and set the hardware option switches, refer to Figure 2-4 and perform the following: Figure 2-4. Accessing the Hardware Option Switches CHAPTER 2: INSTALLATION Page 2-9...
  • Page 21 CHAPTER 2: INSTALLATION Page 2-10 Connecting the EIA-232-D Cable Disconnect all cables and telephone cords attached at the Caution: rear of the unit. Failure to disconnect all cables and cords at this point could result in permanent damage to the 7400B Data Module.
  • Page 22 Insert either end of the telephone cord into the connector on the rear panel of the Data Module labeled LINE. Insert the other end of the telephone cord into the PBX wall jack. If you are using the with-phone option of the 7400B Data Module...

  • Page 23: Initial System Checks

    CHAPTER 2: INSTALLATION Page 2-12 INITIAL SYSTEM CHECKS Power-Up Self-Test IF YOU ARE USING A PC IF YOU ARE USING A DEDICATED TERMINAL This section describes procedures for initially checking out your hardware and any required software. It is assumed at this point that your hardware and data communications software have been properly installed and are ready for use.

  • Page 24: Chapter 3: First Time Users

    DEFINITY Communications System 7400B Data Module User’s Guide CHAPTER 3: FIRST TIME USERS This chapter provides some basics on 7400B Data Module operation, describes how to use a few AT commands that are essential for most data communications operations, and then outlines a typical on-line session. Note: OPERATING MODES Except when the 7400B Data Module is in a test mode, it is always in...

  • Page 25: Essential At Commands

    CHAPTER 3: FIRST TIME USERS Page 3-2 ESSENTIAL AT COMMANDS All of these parameters may be changed on the local terminal device as needed. The 7400B Data Module will adjust to match the speed and parity of the local terminal device. If you connect to a remote system and your screen shows a series of nonsense characters (also referred to as "garbage"), chances are that you need to adjust speed or parity.
  • Page 26 DEFINITY Communications System 7400B Data Module User’s Guide Description AT Command The command prefix that must be typed as the first two letters of all AT commands except +++ and A/. This prefix gets the tention of the data module. Note: The Dial command.

  • Page 27: Sample Command Lines

    CHAPTER 3: FIRST TIME USERS Page 3-4 AT Command Description The escape character sequence. This is one of the two commands that does not require the AT prefix. Once you have connected to the remote device, your data module assumes the on-line mode of operation. If you need to return to the command mode, leave the keyboard idle for at least one second, and then type +++ without pressing [ Enter ].
  • Page 28 DEFINITY Communications System 7400B Data Module User’s Guide EXAMPLE 2: Dialing a telephone number outside your PBX domain with a few other options thrown in. In the first line of this example, In the second line of this example, the data module indicates that it detected a busy signal.

  • Page 29: A Sample On-Line Session

    CHAPTER 3: FIRST TIME USERS Page 3-6 EXAMPLE 4: Changing data options. This command line is a command sequence that sets up the 7400B Data Module to automatically answer incoming calls. The commands set the following parameters: A SAMPLE ON-LINE SESSION Starting the Session Possible Display Problems If the response from the remote end is unintelligible “garbage,”...
  • Page 30 DEFINITY Communications System 7400B Data Module User’s Guide Disconnecting a Data Call Another possible problem is that the remote end response contains normal words mixed in with strange characters, many of which are left brackets ([). This usually indicates that the remote device is sending ANSI display control sequences, and your terminal does not recognize them (ANSI stands for American National Standards Institute).

  • Page 31: Chapter 4: Operation And Configuration

    DEFINITY Communications System 7400B Data Module User’s Guide CHAPTER 4: OPERATION AND CONFIGURATION CONFIGURATION PARAMETERS Parameter Storage and Retrieval CHAPTER 4: OPERATION AND CONFIGURATION This chapter describes how to change, store, and recall configuration parameters, outlines how to create and save custom configuration profiles, and discusses more advanced command usage with example command lines.

  • Page 32: Operating Modes

    Display current AT command settings and S-register values in the active profile and the two stored profiles (also displays the four stored telephone numbers, which are described in a section of this chapter titled “Number Storage”). Store the configuration parameters in the active profile to one of the two storage locations, where n represents the desired location and may be 0 or 1.

  • Page 33: Issuing Commands

    DEFINITY Communications System 7400B Data Module User’s Guide ISSUING COMMANDS Command Line Prefix Command Buffer Command Line Set Up CHAPTER 4: OPERATION AND CONFIGURATION In command mode, the 7400B Data Module looks at everything you type on your keyboard. When you type in something that the data module recognizes as a valid command with a valid parameter (if required), it will execute the action requested.
  • Page 34 CHAPTER 4: OPERATION AND CONFIGURATION Page 4-4 If you make an error while typing a command line, you can send the backspace character, usually issued by pressing the [ Backspace ] key, as often as needed to delete the error. However, as soon as you enter the AT prefix, the data module immediately reads it and sets up for a command to follow.

  • Page 35: No Dial Tone

    DEFINITY Communications System 7400B Data Module User’s Guide Command Acknowledgement Verbose Form Numeric CONNECT RING NO CARRIER ERROR CONNECT 1200 NO DIALTONE BUSY CONNECT 2400 CONNECT 4800 CONNECT 9600 CONNECT 19200 TABLE 4-2 Result Codes CHAPTER 4: OPERATION AND CONFIGURATION Most commands are acted upon immediately and are acknowledged by the result code OK.

  • Page 36: From Data Mode To Command Mode And Back

    CHAPTER 4: OPERATION AND CONFIGURATION Page 4-6 Multiple Characters FROM DATA MODE TO COMMAND MODE AND BACK DIALING A NUMBER If you type in the at prefix and it displays on your screen as aatt, you may disable the command echo by typing the following command: ate0 [ Enter ] The command will appear as aattee00 as you type it, but the data module will send the response code OK to your screen.

  • Page 37: Repeating A Command

    BUSY. Use the A/ command to redial the number as often as you wish. The 7400B Data Module is capable of storing up to four telephone numbers, each of which can contain up to 25 characters. Numbers stored in this way remain available indefinitely, even after the data module has been powered off and then on again.

  • Page 38: Automatic Answering

    [ Enter ] at&z at&z m= [ Enter ] atds=m [ Enter ] TABLE 4-3 Commands for Using Stored Telephone Numbers AUTOMATIC ANSWERING Action: Store number nnn...n in location m, which is one of four locations designated by the numbers 0 through 3. For example: at&z2=92015551212 [ Enter ]...

  • Page 39: Remote Site Use

    DEFINITY Communications System 7400B Data Module User’s Guide REMOTE SITE USE RESET AND CONFIGURATION RECALL CHAPTER 4: OPERATION AND CONFIGURATION If nnn is 0 (the factory-default setting), the automatic answer feature is turned off. The red LED on the front of the data module labeled “AA” lights when the automatic feature is turned on.
  • Page 40 CHAPTER 4: OPERATION AND CONFIGURATION Page 4-10 A second command allows you to recall the factory-default configuration if, for instance, you loose track of changes you have made and need to start over. The form for this command is as follows: at&f [ Enter ] DEFINITY Communications System 7400B Data Module...

  • Page 41: Chapter 5: Troubleshooting

    DEFINITY Communications System 7400B Data Module User’s Guide CHAPTER 5: TROUBLESHOOTING This chapter describes procedures for troubleshooting most problems that may be encountered while installing, configuring, and operating the 7400B Data Module. HOW TO USE THIS Use the following guidelines to isolate and correct a problem: CHAPTER Scan through the “Symptom”...
  • Page 42 CHAPTER 5: TROUBLESHOOTING Page 5-2 Symptom All LEDs are off. POWER/TEST and DATA LEDs flash together. Characters typed on keyboard are not displayed on the screen of the terminal device. Problem Solution Power is off. Check that the AC outlet is live. Check that the power supply unit is connected to the 7400B Data Module and to the AC outlet.
  • Page 43 Try the call again. The far end device is busy with another call. The telephone number Check the number of the far end was dialed incorrectly. device that you wish to call and try the call again.
  • Page 44 CHAPTER 5: TROUBLESHOOTING Page 5-4 Symptom The PC communications software indicates that the call has been disconnected, but the DATA LED remains lit. Problem Solution The data module has From command mode, type the ignored the on-to-off command transition of the DTR at&d2 [ Enter ] lead.
  • Page 45 DEFINITY Communications System 7400B Data Module User’s Guide Symptom The AA LED flashes but the data module does not automatically answer the incoming call. Problem Solution The automatic answer From the command mode, type option is not enabled; ats0=1 [ Enter ] when there is no incoming to turn on the automatic answer call, the AA LED is off.
  • Page 46 CHAPTER 5: TROUBLESHOOTING Page 5-6 Symptom Transmitted and/or received data contains errors. The DATA LED is lit, but a CONNECT xxxx message or numeric result code was not displayed. Numeric code returned when CONNECT xxxx message is preferred. Solution Problem Change terminal device speed to Speed settings of the agree with the speed that was...
  • Page 47 DEFINITY Communications System 7400B Data Module User’s Guide Symptom Commands are displayed without error as they are typed (echoed), but the data module does not respond to any command. The CONNECT message is sent without a speed indication, but the far end device is not set at 300 bps.

  • Page 48: Appendix A: At Command Set

    DEFINITY Communications System 7400B Data Module User’s Guide APPENDIX A: AT COMMAND SET Label Description The command is shown as it should be typed. The command may be typed in Command: uppercase or lowercase. Spaces may be typed between multiple commands on the same command line for readability, but the spaces are ignored by the 7400B Data Module.
  • Page 49 APPENDIX A: AT COMMAND SET Page A-2 Label Description (Contd.) Example: A sample command line follows this label to demonstrate how the command may be used. Comments: An explanation of the example and any other information about the command not provided elsewhere is provided here. Additional commands may be typed on the same command line with the command currently under discussion, unless noted otherwise.
  • Page 50 DEFINITY Communications System 7400B Data Module User’s Guide Command: Escape sequence. Function: Type: immediate none Arguments: none S-Register: Example: The purpose of the +++ command is to provide a way to switch the Comments: data module from on-line or data mode to command mode without disconnecting a data call that is in progress.
  • Page 51 APPENDIX A: AT COMMAND SET Page A-4 Command: Function: Go off-hook in Answer mode. Type: immediate Arguments: none S-Register: Bit 7 of S14 is set to 0. ata [ Enter ] Example: Comments: The A command causes the data module to go off-hook in answer mode and attempt to answer an incoming call.
  • Page 52 0 through 3, will cause the data module to send the contents of its respective telephone number storage location to the PBX as the telephone number. For details on how to use this feature, refer to “Storing a Telephone Number” in Chapter 4, “Operation and Configuration.”...
  • Page 53 In example 1, the number 555-1212 is dialed. The hyphen (-) is optional and may be used for easier reading of the command line. In example 2, the number stored in telephone number location 1 is dialed. The maximum length of the ASCII string is 39 characters; the AT prefix, the carriage return, and spaces used for readability do not add to the character count for the line.
  • Page 54 DEFINITY Communications System 7400B Data Module User’s Guide Command: Function: Switch hook control. Type: immediate Arguments: No argument or an argument of 0 causes the data module to go on- hook. S-Register: none ath [ Enter ] Example: Comments: The H command with no argument can be used during a data call to cause the 7400B Data Module to go on-hook (hang up) after using the escape sequence (+++) to return to command mode.
  • Page 55 APPENDIX A: AT COMMAND SET Page A-8 Command: Request product code or ROM checksum. Function: immediate Type: The I command accepts one of three arguments as follows: Arguments: 0 - The data module displays the decimal number 249, followed by a carriage return and line feed.
  • Page 56 DEFINITY Communications System 7400B Data Module User's Guide Command: Function: Turn the display of result codes on or off. Type: configuration Arguments: No argument or an argument of 0 enables the display of result codes; an argument of 1 disables the display of result codes. The factory- default is result codes enabled.
  • Page 57 APPENDIX A: AT COMMAND SET Page A-10 Command: Function: Control the extended result code set and dialing capabilities. Type: configuration Arguments: The X command accepts one of 5 arguments as follows: 0 - The basic result code set (0—4) is enabled. No dial tone or busy signal detection.
  • Page 58 DEFINITY Communications System 7400B Data Module User’s Guide Command: Function: Reset and recall a stored profile. Type: immediate Arguments: No argument or an argument of 0 recalls the configuration profile stored in location 0; an argument of 1 recalls the configuration profile stored in location 1.
  • Page 59 APPENDIX A: AT COMMAND SET Page A-12 Command: &C Function: Data Carrier Detect (DCD) options. Type: configuration Arguments: The &C command accepts one of two arguments as follows: 0 - (or no argument) maintain the DCD circuit on at all times (factory-default setting) 1 - the DCD circuit operates according to the EIA-232-D standard Bit 5 of S21 is set according to the argument used with the &C...
  • Page 60 DEFINITY Communications System 7400B Data Module User’s Guide Command: &D Function: Data Terminal Ready (DTR) options. Type: configuration Arguments: The &D command accepts one of four arguments as follows: 0 - ignore the DTR interchange circuit (factory-default setting). 1 - return to the command state if an on-to-off transition is detected on the DTR input;...
  • Page 61 APPENDIX A: AT COMMAND SET Page A-14 Command: &F Load the factory-default configuration. Function: immediate Type: none Arguments: none S-Register: at&f [ Enter ] Example: The factory-default configuration values are permanently stored in Comments: ROM and can be recalled at any time. No reset or self-test is initiated by issuing the &F command.
  • Page 62 DEFINITY Communications System 7400B Data Module User’s Guide Command: &T Function: Control diagnostic and test facilities. Type: immediate Arguments: The &T command accepts one of eight arguments (see comment 2) as follows: 0 - (or no option) terminate any test in progress (see comment 3) 1 - initiate local digital loopback test 2 - same as 1 3 - initiate local data loopback test...
  • Page 63 &Z2= 74802 &Z3= PPARIS command and S-register settings for the active configuration profile command and S-register settings saved in configuration profile locations 0 and 1 contents of the four telephone number storage locations DEFINITY Communications System 7400B Data Module User’s Guide...
  • Page 64 DEFINITY Communications System 7400B Data Module User’s Guide Command: &W Function: Store the active configuration profile. Type: immediate Arguments: No argument or an argument of 0 stores to location 0, an argument of 1 stores to location 1. S-Register: none at&w0 [ Enter ] Example: In the example, the currently active configuration profile is stored to...
  • Page 65 APPENDIX A: AT COMMAND SET Page A-18 &Z Command: Store a telephone number. Function: immediate Type: The &Z command accepts one of four arguments (0 through 3), which Arguments: designates the memory location in which the dialing string that follows the command will be stored.

  • Page 66: Appendix B: S-Registers

    DEFINITY Communications System 7400B Data Module User’s Guide APPENDIX B: S-REGISTERS This appendix contains an explanation of each S-register used by the 7400B Data Module. An S-register is an 8-bit location in non-volatile memory that is used for storing the value of one or more configuration parameters.
  • Page 67 APPENDIX B: S-REGISTERS Page B-2 Description Label The S-register is identified following this label. Note that the names Register: for S-registers 1 through 9 may be typed as two-digit numbers with leading zeros, if desired, for readability (e.g., S01 is equivalent to S1). The purpose and use for the S-register is explained following this Description: label.
  • Page 68 DEFINITY Communications System 7400B Data Module User’s Guide Description Label (Contd.) A yes after this label indicates that the contents of this S-register will Storable: be written when the current configuration profile is saved to one of the two configuration profile storage locations. A no here indicates that the contents of the S-register will not be written to storage.
  • Page 69 APPENDIX B: S-REGISTERS Page B-4 Register: Description: The value in this S-register represents the ring number on which an incoming call will be automatically answered. Range of The value may be 000 through 255 rings. The factory-default setting is Values: 000 rings.
  • Page 70 DEFINITY Communications System 7400B Data Module User’s Guide Register: This S-register stores the ASCII value of the escape sequence Description: character. Range of Value may be 000 through 127 (see comments); factory-default setting Values: is 043, the ASCII code for a plus sign (+). Storable: Setting the value greater than 127 will disable escape sequence Comments:...
  • Page 71 APPENDIX B: S-REGISTERS Page B-6 Register: This S-register holds the ASCII value for the line feed character. Description: Value may be 000 through 127; factory default setting is 010, usually Range of Values: output by the Ctrl-J key combination from a display terminal. Storable: none Comments:...
  • Page 72 DEFINITY Communications System 7400B Data Module User’s Guide Register: Description: Wait time for line signal or dial tone. If line signal is not detected within this time, the call will be disconnected. Range of Value may be 001 through 055 seconds; factory-default value is 030 Values: seconds.
  • Page 73 APPENDIX B: S-REGISTERS Page B-8 Register: S11 — not used Register: Description: The value in this S-register determines the minimum delay required immediately before and after entering the escape sequence (guard time). It also determines the maximum interval allowed between entering each of the three consecutive characters of the sequence.
  • Page 74 DEFINITY Communications System 7400B Data Module User’s Guide Register: This S-register is used to store the status of bit-mapped options as Description: follows: bit 0 — not used (always set to 0) bit 1 — 0 = command echo disabled, 1 = command echo enabled (default = 1, see E command) bit 2 —...
  • Page 75 APPENDIX B: S-REGISTERS Page B-10 Register: This S-register stores test function status in a bit-mapped format as Description: follows: bit 0 — local digital loop test; 0 = test disabled, 1 = test in progress (default = 0, see the &T1 and &T2 commands) bit 1 —...
  • Page 76 DEFINITY Communications System 7400B Data Module User’s Guide Register: Description: The value in this S-register establishes the duration of diagnostic tests initiated by the &T command. Range of Value may be 000 through 255 seconds. The factory-default value is Values: Storable: Comments: Any locally initialized test in progress is automatically terminated...
  • Page 77 APPENDIX B: S-REGISTERS Page B-12 Register: This S-register is used to store the status of bit-mapped options as Description: follows: bit 0 — not used (default = 0, see comment 1) bit 1 — not used (always set to 0) bit 2 —...
  • Page 78 DEFINITY Communications System 7400B Data Module User’s Guide Register: Description: This S-register is used to store the status of bit-mapped options as follows: bits 0 and 1 — not used (default = 2, see comment 1) bits 2 and 3 — not used (default = 1, see comment 1) bits 4, 5 and 6 —...
  • Page 79 APPENDIX B: S-REGISTERS Page B-14 Register: Description: This S-register is used to store the status of bit-mapped options as follows: bit 0 — allow remote loop request from remote system; 0 = disabled, 1 = enabled (default = 1, see &T command) bits 1, 2, and 3 —...
  • Page 80 DEFINITY Communications System 7400B Data Module User’s Guide Register: Description: The value in this S-register determines how long a change of state (OFF to ON or ON to OFF) on the Data Terminal Ready (DTR) lead must persist before it is acknowledged. If the change of state persists for a shorter time than is specified in S-register 25 it is ignored.

  • Page 81: Appendix C: Application Notes

    DEFINITY Communications System 7400B Data Module User’s Guide APPENDIX C: APPLICATION NOTES PBX APPLICATION NOTES PC APPLICATIONS GUIDE This appendix provides a list of application notes that describe how to administer specific AT&T PBX systems for using the data module and describes how to configure some popular PC data communications software packages for use with the 7400B Data Module.

  • Page 82: Procomm Plus

    APPENDIX C: APPLICATION NOTES Page C-2 PROCOMM PLUS Configuring the Software PROCOMM PLUS SETUP UTILITY A – Initialization command . . ATE1V1X4Q0&C1&D2 S7=255 s0=0ˆM B – Dialing command ..C – Dialing command suffix . . D –...
  • Page 83 DEFINITY Communications System 7400B Data Module User’s Guide PROCOMM PLUS SETUP UTILITY A – 300 baud connect message ..CONNECT B – 1200 baud connect message ..CONNECT 1200 C – 2400 baud connect message .
  • Page 84 APPENDIX C: APPLICATION NOTES Page C-4 DIALING DIRECTORY: PCPLUS NAME I -- I Revise Entry 1 I ------------------- I NAME: ATTMAIL NUMBER: 9,1800-624-5123 --------- I BAUD: 2400 PgUp S I PARITY: NONE PgDn S I DATA BITS: 8 Home F I STOP BITS: 1 End La I DUPLEX: FULL...
  • Page 85 DEFINITY Communications System 7400B Data Module User’s Guide RELAY GOLD Configuring the Software Placing a Call Directly (c) Copyright 1985, 88 RELAY Communications, Inc. OFFLINE RELAY Gold Esc = Exit Relay Gold is a data communications software package produced by Relay Communications, Inc.
  • Page 86 N (Y,N) Delay After Line? 0 (0-99) RELAY/3270 Model Number: 2 2 . Type the telephone number of the system you want to call, and Relay Gold sends the number to the 7400B Data Module to dial the system. This example uses ATTMAIL as the system to be called.
  • Page 87 Your PC ID is: relay.gold F1 = Return to Terminal Screen Alt F1 = Redial or Reanswer the Telephone Alt F2 = Hang up and Return to Main Offline Menu F3 = Send Files to Another Computer F4 = Receive Files to Your PC...

  • Page 88: Crosstalk Xvi

    APPENDIX C: APPLICATION NOTES Page C-8 CROSSTALK XVI Configuring the Software ------- CROSSTALK defaults (Hayes 2400) NAme NUmber --------- Communications PArity None SPeed 2400 DAta 8 POrt --------------- Key settings -------------- ATten SWitch Home ------ ------- -------------- Available command files --------------------------- 2) NEWUSER 1) AT&T Crosstalk XVI is a data communications software package produced by...
  • Page 89 DEFINITY Communications System 7400B Data Module User’s Guide Placing a Call Choose a service to set up: AT&T Mail CompuServe Delphi Dow Jones News / Retrieval LEXIS/NEXIS MCI MAIL Newsnet Official Airline Guide Source VU/TEXT A system running Remote2 Host or R2LAN Host Another PC running Crosstalk or Transporter Other service not listed above Exit from this program...
  • Page 90 APPENDIX C: APPLICATION NOTES Page C-10 Disconnecting a Call For a listed service: Enter the telephone number (for example, 5551234 or 9,5551234). Enter the baud rate (for example, 300, 1200, 2400). Enter any other parameters required for that specific service (such as login, password, account number).

  • Page 91: Appendix D: Quick-Reference Summaries

    DEFINITY Communications System 7400B Data Module User’s Guide APPENDIX D: QUICK-REFERENCE SUMMARIES APPENDIX D: QUICK-REFERENCE SUMMARIES This appendix contains quick-reference summaries for the following data: AT Command Set S-Registers Result Codes Factory-Default Configuration EIA-232-D Pin Assignments ASCII Character Set Page D-1...
  • Page 92 APPENDIX D: QUICK-REFERENCE SUMMARIES Page D-2 Description Command Command prefix—precedes most commands. Go off hook and remain in command state. Repeat the last command line. Enter originate mode and dial number that follows. Inhibit command state echo. Enable command state echo. Go on-hook (hang up).
  • Page 93 Recall configuration profile stored in location 0 at start-up. &Y1 Recall configuration profile stored in location 1 at start-up. &Z0 Store the following telephone number in location 0. &Z1 Store the following telephone number in location 1. &Z2 Store the following telephone number in location 2.
  • Page 94 APPENDIX D: QUICK-REFERENCE SUMMARIES Page D-4 Description Register Ring to answer on. Incoming ring count. Escape sequence character. Carriage return character. Line feed character. Back space character. Not used. Wait time for call completion. Not used. Not used. Delay between lost line signal and hang up. Not used.
  • Page 95 DEFINTY Communications System 7400B Data Module User’s Guide Verbose Form Numeric CONNECTED RING NO CARRIER ERROR CONNECT 1200 NO DIALTONE BUSY CONNECT 2400 CONNECT 4800 CONNECT 9600 CONNECT 19200 TABLE D-3 RESULT CODES APPENDIX D: QUICK-REFERENCE SUMMARIES Description Command accepted Connection made at 300 bps Note: If command X1 is in effect, CONNECT...
  • Page 96 APPENDIX D: QUICK-REFERENCE SUMMARIES Page D-6 Parameter Command state echo Communication mode Default user profile DCD circuit option DSR circuit option DTR circuit option Not used by 7400B Data Module Not used by 7400B Data Module Not used by 7400B Data Module RDL request Result codes Result code format...
  • Page 97 DEFINITY Communications System 7400B Data Module User’s Guide Parameter Auto-answer on ring Backspace character Carriage return character Not used by 7400B Data Module Not used by 7400B Data Module Not used by 7400B Data Module DTR detection Escape sequence character Escape sequence guard time Hang up after lost carrier Line feed character...
  • Page 98 APPENDIX D: QUICK-REFERENCE SUMMARIES Page D-8 Circuit — BA (SD) BB (RD) CA (RTS) CB (CTS) CC (DSR) AB (SG) CF (RLSD) — — — — — — — — — — CD (DTR) — CE (RI) — — *CI on pin 12 is Bell 212A, on pin 23 is EIA-232-D TABLE D-5 EIA-232-D PIN ASSIGNMENTS DEFINITY Communications System Function...
  • Page 99 DEFINITY Communications System 7400B Data Module User’s Guide ASCII CONTROL VALUE CHARACTER (more) TABLE D-6 ASCII CHARACTER SET APPENDIX D: QUICK-REFERENCE SUMMARIES ASCII VALUE Ctrl-@ Ctrl-A Ctrl-B Ctrl-C Ctrl-D Ctrl-E Ctrl-F Ctrl-G Ctrl-H Ctrl-I Ctrl-J Ctrl-K Ctrl-L Ctrl-M Ctrl-N Ctrl-O Ctrl-P Ctrl-Q Ctrl-R...
  • Page 100 APPENDIX D: QUICK-REFERENCE SUMMARIES Page D-10 ASCII CONTROL VALUE CHARACTER TABLE D-6 ASCII CHARACTER SET (Contd.) ASCII VALUE — DEFINITY Communications System 7400B Data Module User’s Guide CONTROL CHARACTER ‘ ˜ Delete...
  • Page 101 Equipment) The equipment that provides the functions required to establish, maintain and terminate a data communications connection. The DCE also provides any required signal conversion for communication between the data terminal equipment (DTE) and the telephone line or data circuit. GLOSSARY Page GL-1...
  • Page 102 DCP supports simultaneous voice and data services over the same line. DTE. See Data Terminal Equipment. D8W. A standard modular telephone cord used to connect DCP devices to a PBX wall jack. EIA-232-D. A US industry standard interface for digital data communications equipment, established by EIA (the Electronics Institute of America).
  • Page 103 DEFINITY Communications System 7400B Data Module User’s Guide Linked mode. A DIP-switch selected operating mode in which the 7400B Data Module supports both data and voice services. On-line mode. An operating mode in which the 7400B Data Module transmits all characters coming from its associated terminal device and does not attempt to interpret them as commands.
  • Page 104 DEFINITY Communications System 7400B Data Module User’s Adjunct equipment, 2-1 power adapter, 2-1 power supply, 2-1 Crosstalk XVI, C-8 PBX, C-1 PC software, C-1 Procomm Plus, C-2 Relay Gold, C-5 ASCII character backspace, B-6, 4-4 carriage return, B-5 character set, 4-4 dialing string, A-4 escape sequence, B-4 line feed, B-5...
  • Page 105 B-8, B-9, B-11, B-12, B-13 data metering, 2-7 DIP switch, 2-6, 2-8 factory-default, 2-8 hardware, 2-6 make busy on local loop, 2-7 profiles, 2-6 telephone, 2-6 Parameters changing, 4-1 communications, 3-1 configuration, 4-1 factory-default, 4-1 retrieval, 4-1 storage, 4-1...
  • Page 106 S25, B-14 S3, B-5 S4, B-5 S5, B-6 S7, B-6, A-10 summary, D-4 Stop bits, 3-2 Storing telephone numbers, A-17, 4-7 System 75, 1-1 System 85, 1-1 Telephone, 1-1, 1-4 number storage, A-4, 4-7 option, 2-6 Terminal, dedicated, 2-12, 3-2...
  • Page 107 AT&T Bell Laboratories Errata Sheets for 7400B Data Module User’s Guide subject: The attached five errata sheets contain modifications to the 7400B Data Module User’s Guide, order number 555-020-707 Issue 1 November 1989. Please disregard the earlier memo containing errata sheets for the same document. The sheets attached to this memo replace any and all errata sheets.

  • Page 108: Important Safety Instructions

    If you suspect a gas leak, report it immediately, but use a telephone away from the area in question. The telephone’s electrical contacts could generate a tiny spark. While unlikely, it is possible that this spark could ignite heavy concentrations of gas.

  • Page 109: Save These Instructions

    Do not allow anything to rest on the power cord. Do not locate this product where the cord will be abused by people walking on it. Do not overload wall outlets and extension cords as this can result in the risk of fire or electric shock.

  • Page 110: Important Installation Safety Instructions

    IMPORTANT INSTALLATION SAFETY INSTRUCTIONS When this product is located in a separate building from the telephone communications system, a line current protector MUST be installed at the entry/exit points of ALL buildings through which the line passes. The following are the ONLY acceptable devices for use in this application: AT&T 4-type procetors...
  • Page 111 The voltage measured from Phase to Neutral should be 110 to 125 VAC. The voltage measured from Phase to Ground should be 110 to 125 VAC. The voltage measured from Neutral to Ground should be less than 1 VAC. If the receptacle is not a properly grounded 3-prong type, stop the installation. Installation can only be completed after a qualified electrician corrects the problem.

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