Avaya 8400B Plus - Manuals

Contents vi Issue 2 November 1996 E Quick-Reference Summaries E-1 GL Glossary GL-1 IN Index IN-1

Issue 2 November 1996 vii About This Document Purpose The purpose of this guide is to provide information for installing, operating, testing, and troubleshooting the 8400B Plus Data Module. Organization of This Guide The following paragraphs summarize the chapters and appendices contained in this gu...

About This Document viii Issue 2 November 1996 command interface and you are not using your 8400B Plus Data Module with a PC communications package, you will need to familiarize yourself with this chapter. ■ Chapter 4, “Troubleshooting,” describes procedures for troubleshooting problems that may be ...

How to Order Documentation Issue 2 November 1996 ix How to Order Documentation This document’s order number is 555-020-709. To order this document: For more information about Lucent Technologies documents, see Business Communications Systems Publications Catalog, 555-000-010. How to Comment on This ...

About This Document x Issue 2 November 1996 Conventions Used Throughout this guide, command lines that are typed are shown in typewriter-style characters, and responses that the 8400B Plus Data Module returns are shown in italics. The following is an example. AT H OK Note the following characteristi...

Security Issues Issue 2 November 1996 xi Security Issues As a Lucent Technologies customer, you should be aware that there is an increasing problem of telephone fraud. Telephone toll fraud can occur in many forms, despite the numerous efforts of telephone companies and telephone equipment manufactur...

About This Document xii Issue 2 November 1996 are security conscious and check the CDR/SMDR reports every morning looking for suspicious activity. They will not see records of the calls because CDR/SMDR was turned off by the hackers. The administrator may notice the absence of CDR/SMDR records for e...

Security Issues Issue 2 November 1996 xiii PBX Security Measures Everyone in your company who uses the telephone system is responsible for system security. Users and attendants need to be aware of how to recognize and react to potential hacker activity. Informed people are more likely to cooperate w...

About This Document xiv Issue 2 November 1996 ■ Change passwords frequently (at least quarterly). Set password expiration times and tell users when the changes go into effect. Changing passwords routinely on a specific date (such as the first of the month) helps users to remember to do so. ■ Establi...

Lucent Technologies Fraud Intervention Issue 2 November 1996 xv ■ Keep telephone wiring closets and equipment rooms locked. ■ Keep telephone logs and printed reports in locations that only authorized personnel can enter. ■ Design distributed reports so they do not reveal password or trunk access cod...

About This Document xvi Issue 2 November 1996 If you are using a PC as your terminal: User’s guide for Microsoft ® MS-DOS ® . You may need this reference for explanations of commands used by your PC to install, configure, and run your PC communications package. User’s guide for your PC communication...

Important Safety Instructions Issue 2 November 1996 xvii Important Safety Instructions When using your equipment, basic safety precautions, including the following, should always be followed to reduce the risk of fire, electric shock, and injury to persons: ■ Read and understand all instructions. ■ ...

Important Safety Instructions xviii Issue 2 November 1996 ■ Do not allow anything to rest on the power cord. Do not locate this product where the cord will be abused by persons walking on it. ■ Do not overload wall outlets and extension cords as this can result in the risk of fire or electric shock....

Issue 2 November 1996 1-1 1 Introduction This chapter discusses the basic operating features of the 8400B Plus Data Module and describes the external indicators and connectors. The 8400B Plus Data Module is a new version of the 7400B Plus Data Module and has been designed explicitly to work with two...

Introduction 1-2 Issue 2 November 1996 a personal computer (PC) using industry-standard ‘‘auto-dialer’’ PC communications packages. The 8400B Plus Data Module is a data service link between a Data Terminal Equipment (DTE) device, a two-wire telephone, and a Lucent Technologies DEFINITY ® Communicati...

Physical Description Issue 2 November 1996 1-3 In addition, the 8400B Plus Data Module can be used to automatically turn on the speakerphone of the voice terminal when a voice call is dialed from your terminal device. Additional features of the 8400B Plus Data Module include the following: ■ nonvola...

Introduction 1-4 Issue 2 November 1996 Front Panel The front panel of the 8400B Plus Data Module is shown in Figure 1-1. One red light emitting diode (LED) and one green LED on the front panel indicate the status of the set during normal operation, and the result of self-tests when initially powered...

Physical Description Issue 2 November 1996 1-5 Rear Panel The rear panel of the 8400B Plus Data Module is shown in Figure 1-2, and the connectors located on the rear panel are described in Table 1-1. Figure 1-2. Rear Panel of the 8400B Plus Data Module PHONE LINE/POWER ! USE ONLY WITH COMMUNICATION ...

Introduction 1-6 Issue 2 November 1996 _ Table 1-1. Rear Panel Connector Descriptions Connector Description PHONE This connector accepts one end of the D8W telephone line cord used to connect a two-wire voice terminal to the 8400B Plus Data Module. LINE/POWER This connector accepts one end of the D8...

Physical Description Issue 2 November 1996 1-7 Power Supply Unit A Lucent Technologies power supply unit is shipped with each 8400B Plus Data Module. This unit connects to a grounded AC outlet, and provides a connection between the PBX wall jack and the 8400B Plus Data Module. The power supply unit ...

Issue 2 November 1996 2-1 2 Installation This chapter describes the equipment required for installing the 8400B Plus Data Module, and outlines procedures for preparing it for operation. If you are using the 8400B Plus Data Module with a PC, you will be ready to use a PC communications package after ...

Selecting the Correct Installation Procedure Issue 2 November 1996 2-3 Figure 2-1. Components of the US Configuration and the International Configuration LINE PHONE-7 +8 OTHER -2 +5 CONFIGURATIONS United States International 8400B Plus Data Module one 7-foot D8W telephone cord M9/F25 Adapter DEFINIT...

Installation 2-4 Issue 2 November 1996 What You Need To install and operate the 8400B Plus Data Module, you will need the following items: ■ an asynchronous data terminal or PC with a terminal emulation program and EIA cord ■ (optional) a two-wire DCP voice terminal with D8W cord Figure 2-2 illustra...

Selecting the Correct Installation Procedure Issue 2 November 1996 2-5 Figure 2-2. Typical Installation of the US Configuration, including Telephone and Separate Power Supply PHONE L INE/ POW ER ! USE ONLY W ITH COMMUNICATIONCIRCUIT POW ER S OURCE (use only with 25-pin (Rear Endplate) EIA-232-D D8W ...

Installation 2-6 Issue 2 November 1996 Figure 2-3. Typical Installation of the International Configuration, including Telephone and Separate Power Supply PHONE L INE/ POW ER ! USE ONLY W ITH COMMUNICATIONCIRCUIT POW ER S OU RCE (Rear Endplate) MSP-1 Wall D8W D8W Telephone (Optional) D8W Jack AC LINE...

Selecting the Correct Installation Procedure Issue 2 November 1996 2-7 Figure 2-4. Typical Installation of the US Configuration or International Configuration, including Telephone and Closet Power Supply Selecting an EIA Connector Cord The standard EIA-232-D Connector cord (already supplied with you...

Installation 2-8 Issue 2 November 1996 The most common EIA-232-D Connector cords are supplied with a male connector at both ends. If you have this type of cord and the EIA-232-D port on your terminal device is a male connector, you can use an adapter commonly referred to as a “gender changer.” Other...

Installation 2-10 Issue 2 November 1996 2. If you are installing the US Configuration, and using the separate power supply provided with your 8400B Plus Data Module: a. Plug the 400B2 Adapter into the PBX wall jack. b. Plug the remaining end of the first D8W telephone cord into the bottom connector ...

Initial System Checks Issue 2 November 1996 2-11 Connecting a Telephone If you are using the With Telephone option of the 8400B Plus Data Module (voice and data), install the telephone and any connected adjunct equipment as follows: 1. Insert either end of the remaining D8W telephone cord into the l...

Installation 2-12 Issue 2 November 1996 Installation Options Seven installation options are determined by the value entered in S-register S24 . The factory-default settings of these installation options are correct for the majority of applications. Check the default values, listed in Table 2-1, to d...

Installation Options Issue 2 November 1996 2-13 line is administered. Check with your telecommunications manager to administer the line for simultaneous voice and data or data service required. US Companding This option is set, by default, for Yes. Leaving this default permits the 8400B Plus Data Mo...

Installation 2-14 Issue 2 November 1996 Disable Data Metering Feature This option is set, by default, for Yes. This requires the 8400B Plus Data Module to adjust its transfer speed to match the transfer speed of the remote system. The CONNECT xxxx message is displayed to indicate the transfer speed ...

Installation Options Issue 2 November 1996 2-15 NOTE: This option applies only to voice-dial calls, and is only valid when the Automatic Speakerphone Activation option (see below) is set to Yes. Automatic Speakerphone Activation This option is set, by default, for Yes, permitting automatic activatio...

Installation 2-16 Issue 2 November 1996 Disable Busyout Feature During Local Loopback Test This option is set, by default, for Yes. The 8400B Plus Data Module will not busyout the DCP line while performing a Local Loopback Test or Local Loopback Self-Test. Changing this option to No allows the 8400B...

Changing Installation Options Issue 2 November 1996 2-17 To adjust the installation options, perform the following steps. 1. Using Table 2-1, determine the total value to be entered in S-register S24 . 2. Check the current value of S-register S24 by typing ATS24? . 3. If the desired value (ascertain...

Installation 2-18 Issue 2 November 1996 LED Indications Two LEDs are located on the top of the 8400B Plus Data Module. One LED is red, and the other LED is green. These indicate the status of the set during normal operation, and the result of self-tests when the unit is initially powered. When power...

LED Indications Issue 2 November 1996 2-19 Table 2-2. LED Indication Summary Status of Unit GreenLED RedLED Description Self-Test On On When the unit is first powered, this indicates it is performing a self-test. When the self-test is complete, the green LED will turn off. If self-test passed, the r...

Installation 2-22 Issue 2 November 1996 If You Are Using a PC PC communications packages provide the capability of configuring the 8400B Plus Data Module automatically. When using a PC communications package with the 8400B Plus Data Module, there are two items to note: 1. The PC communications packa...

Issue 2 November 1996 3-1 3 Configuration and Operation 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. This chapter also provides so...

Configuration and Operation 3-2 Issue 2 November 1996 will execute the action requested. A valid command with an invalid parameter will produce the ERROR result code. An invalid command will also produce the ERROR result code, and is ignored. In data mode, everything you type is passed as data witho...

Issuing Commands Issue 2 November 1996 3-3 All of these parameters may be changed on the local terminal device as needed. The 8400B Plus Data Module will adjust to match the speed and parity of the local terminal device when it receives an AT command. If you connect to a remote system and your scree...

Configuration and Operation 3-4 Issue 2 November 1996 you cannot delete the AT prefix once it is typed. The factory-default backspace character is an ASCII backspace. Once you complete a command line by pressing , the 8400B Plus Data Module will try to interpret all characters on the command line as...

Issuing Commands Issue 2 November 1996 3-5 Repeating a Command As mentioned earlier, the command buffer contains the last completed command line. If you wish to repeat the previous command line without retyping it, type A/ without the AT command prefix and without pressing . This command is most use...

Configuration and Operation 3-6 Issue 2 November 1996 Sample Command Lines This section presents a few sample AT command lines with explanations of the results they will produce. EXAMPLE 1: Checking if your terminal is communicating with the 8400B Plus Data Module. AT NOTE: Remember, the two charact...

Configuration Parameters Issue 2 November 1996 3-7 EXAMPLE 3: Changing data options. AT E1 &D2 S0=5 This command line is a command sequence that sets up the 8400B Plus Data Module to set the command echo option, the DTR option, and the automatic answer option. The commands set the following para...

Configuration and Operation 3-10 Issue 2 November 1996 Data Operation This section provides information on how to use the 8400B Plus Data Module for data calls. From Data Mode to Command Mode and Back An escape sequence, +++ , can be typed at any time during a data call to return temporarily to comm...

Data Operation Issue 2 November 1996 3-11 The following is an example: ATDT74768 In the example, the command will cause the 8400B Plus Data Module to go off hook, dial the number, and then wait the period of time specified in S-register S7 for the call to be completed. If the call cannot be complete...

Configuration and Operation 3-12 Issue 2 November 1996 stored so that additional commands can be entered on the same command line. Table 3-4. Commands for Using Stored Telephone Numbers Command Line: Action: AT&Zm=nnn...n Store number nnn...n in location m , which is one of four locations design...

Data Operation Issue 2 November 1996 3-13 Automatic Answering The 8400B Plus Data Module can be set up to answer incoming data calls automatically. To initialize this option, type the command line: ATS0= nnn where nnn is a decimal number in the range of 1 through 255, representing the number of ring...

Configuration and Operation 3-14 Issue 2 November 1996 ■ Q1 turns off the result codes that would be the normal responses of the 8400B Plus Data Module to commands that it receives. (For example, the CONNECT message that is displayed when answering a call would interfere with the printer.) ■ S0=1 tu...

Configuration and Operation 3-16 Issue 2 November 1996 ■ D is the dial command. ■ 9 represents the access code required to dial a number outside your PBX domain. ■ The remainder of the line is the telephone number. In the second line of this example, the 8400B Plus Data Module indicates that it dete...

Data Operation Issue 2 November 1996 3-17 Possible Display Problems If the response from the remote end is unintelligible “garbage,” chances are that the speed or parity bit selection is incorrect. In this case, assuming that your terminal device allows, the parameters may be corrected without disco...

Configuration and Operation 3-18 Issue 2 November 1996 Voice Operations This section provides information on how to use the 8400B Plus Data Module for voice dialing. NOTE: The host PBX must be administered to support voice and data calls. Using the 8400B Plus for Voice Dialing The 8400B Plus Data Mo...

Voice Operations Issue 2 November 1996 3-19 The P dial modifier must be included to tell the 8400B Plus Data Module that the call is a voice call. If an attempt to dial a voice call is made using more than one dial command on a command line, the first dial command will be accepted and the second dia...

Configuration and Operation 3-20 Issue 2 November 1996 Sample Command Line This section presents a few sample AT command lines for voice dialing, along with explanations of the results they will produce. EXAMPLE 1: Dialing a voice call. ATD P 9,1 9085551212 OK In the first line of this example: ■ AT...

Voice Operations Issue 2 November 1996 3-21 ■ , (one comma) introduces a single delay. ■ 999# is the password for the above extension. At this point you are in your voice mail system ready to send, receive, etc., messages. EXAMPLE 3: Using the 8400B Plus Data Module to dial multiple calls. AT D T 1 ...

Issue 2 November 1996 4-1 4 Troubleshooting This chapter describes procedures for troubleshooting most problems that may be encountered while installing, configuring, and operating the 8400B Plus Data Module. How to Use This Chapter Use the following guidelines to isolate and correct a problem: 1. S...

Troubleshooting 4-2 Issue 2 November 1996 4. To return to data mode after using the escape sequence to enter command mode, type the command line ATO Table 4-1. Troubleshooting Guidelines Symptom Problem Solution Both LEDs are off. Power is off. Check that the AC outlet is working. Check that the pow...

Troubleshooting 4-4 Issue 2 November 1996 Call disconnects immediately after an attempt to connect; BUSY or NO CARRIER may be displayed on the local terminal device; green LED turns off, red LED is on. The far-end device is busy with another call. Try the call again. The telephone number was dialed ...

Troubleshooting 4-6 Issue 2 November 1996 The speakerphone turns on when a voice call is dialed, and a dial tone is heard, but touch-tones are not heard. Incorrect option settings. Change the Telephone Provides Dialing option to Yes. Dial tone and voice sounds are distorted. Incorrect option setting...

Troubleshooting Issue 2 November 1996 4-7 Dialing begins before the second dial tone is heard. Incorrect dialing pause. Insert a comma in the telephone number after the 9 (digit used for calls outside the PBX). ATDP9,555-1212 If the problem persists, insert another comma for a second pause. ATDP9,,5...

Troubleshooting 4-8 Issue 2 November 1996 The green LED is flashing, and the red LED is on, but the 8400B Plus Data Module does not automatically answer the incoming call. The automatic answer option is not enabled. From the command mode, type ATS0=1 to turn on the automatic answer feature. Set the ...

Troubleshooting Issue 2 November 1996 4-9 Result codes are not displayed when commands are entered. The display result codes option is turned off. Turn on the display result codes option by typing ATQ0 Numeric code returned when verbose message is preferred. The result code format option is set to n...

Issue 2 November 1996 A-1 A AT Command Set This appendix contains an explanation of each AT command accepted by the 8400B Plus Data Module. Labels used in the descriptions are defined as follows: Table A-1. Accepted AT Command Labels Label Description Command: The command is shown as it should be ty...

AT Command Set A-2 Issue 2 November 1996 Arguments: Many commands accept or require a numerical argument. Whether an argument is required and the range of acceptable values for the argument is shown here. S-Register: The S-registers consist of 28 1-byte memory locations in the data module, designate...

AT Command Set A-4 Issue 2 November 1996 Command: A Function: Go off-hook in Answer mode. Type: immediate Arguments: none S-Register: Bit 7 of S14 is set to 0 . Example: ATA Comments: The A command causes the 8400B Plus Data Module to go off-hook in answer mode and attempt to answer an incoming call...

AT Command Set A-8 Issue 2 November 1996 Arguments — Continued: In addition to a telephone number, the following Dial Modifiers may be used with the dial command: P (Pulse) — used with a dial command to indicate a voice call. Must be the first character in the dial string or the stored telephone num...

AT Command Set Issue 2 November 1996 A-9 S-Register: Bit 7 of S14 is set to 1 . Example 1: ATDP 9,1 201-555-1212 Example 2: AT &Z1=Texas ATDP 9, 1 201-555-1212;DTS=1 Comments: Dial modifiers can be combined in a dial command to perform a series of operations. In example 1, the P dial modifier is...

AT Command Set A-12 Issue 2 November 1996 Command: H Function: Switch hook control. Type: immediate Arguments: No argument or an argument of 0 causes the 8400B Plus Data Module to go on-hook. S-Register: none Example: ATH Comments: The H command with no argument can be used during a data call to cau...

AT Command Set A-16 Issue 2 November 1996 Command: S Function: Read from, or write to, an S-register. Type: immediate Arguments: The S command accepts one of three arguments as follows: mm — This argument, following the S command, establishes S-register mm as the last S-register accessed. mm=nnn — T...

AT Command Set Issue 2 November 1996 A-17 Example: ATS6 — establishes S-register S6 as the last accessed S-register. ATS6=4 — sets S-register S6 to the value of 4. ATS=4 — sets the value of the last S-register accessed to 4. AT=4 — sets the value of the last S-register accessed to 4. ATS6? — returns...

AT Command Set A-18 Issue 2 November 1996 Command: V Function: Select format for result codes. Type: configuration Arguments: No argument or an argument of 0 causes the 8400B Plus Data Module to return the short form or numeric result codes; an argument of 1 causes the 8400B Plus Data Module to retu...

AT Command Set Issue 2 November 1996 A-27 Comments: 1. In the example, a local data loopback test is initiated. 2. All argument values in the range of 0-8 are valid. All of the options selected by the command arguments described above are accepted and implemented by the 8400B Plus Data Module. 3. If...

Issue 2 November 1996 B-1 B Dial Modifiers Dial modifiers are only recognized when they appear in a dial string. A dial string is a string of characters following the D (dial command) unless otherwise noted. This appendix contains an explanation of each dial modifier accepted by the 8400B Plus Data ...

Dial Modifiers Issue 2 November 1996 B-3 Dial Modifier: P Function: Request to make a voice call. S-Register: S6 Example: ATDP9, 9570000 Comments: The purpose of the P dial modifier is to signal the 8400B Plus Data Module to dial the number that follows as a voice call. When entered immediately afte...

S-Registers C-2 Issue 2 November 1996 Figure C-1. Active and Stored Configuration Data To look at the contents on just one register, use the command Smm? where mm is the number of the S-register. The data module will return three digits, representing the decimal value of the specified S-register. To...

S-Registers C-4 Issue 2 November 1996 Table C-1. Labels Used in S-Registers Label Description Register: The S-register is identified following this label. Note that the names for S-registers 1 through 9 may be typed as two-digit numbers with leading zeros, if desired, for readability (for example, S...

S-Registers Issue 2 November 1996 C-13 Register: S6 Description: This S-register controls the blind dial delay interval for voice dial calls. Range of Values: Value may be 000 through 255 seconds; factory-default is 2 seconds. Storable: no Comments: The 8400B Plus Data Module uses the blind dialing ...

Issue 2 November 1996 D-1 D Isolating Problems Using Loopback Data Tests This appendix provides information on how to perform loopback tests to isolate problems involving the 8400B Plus Data Module. Data Loopback Test The data loopback test aids the remote user. It excludes the local EIA interface a...

Isolating Problems Using Loopback Data Tests D-2 Issue 2 November 1996 Figure D-1. Data Loopback Test Performing a Data Loopback Test To initiate the test, set up a data call and escape to command mode ( +++ ). Then type: AT&T3 The system responds with: OK The remote endpoint user types characte...

Local Loopback Test Issue 2 November 1996 D-3 The system responds with the completion signal: OK Local Loopback Test This test evaluates the connection between your terminal or PC and the 8400B Plus Data Module. With this test, you can send data from your keyboard, through the computer, to the data ...

Isolating Problems Using Loopback Data Tests D-4 Issue 2 November 1996 Performing a Local Loopback Test To initiate the test, type: AT&T1 Type any string of characters. Compare the characters on the screen with those you typed. If the data does not match, troubleshoot your EIA Connector cord and...

Isolating Problems Using Loopback Data Tests D-6 Issue 2 November 1996 If an error count other than 000 is returned, repeat this test procedure. If the error count is still other than 000, this indicates a problem within the data module. Call the Lucent Technologies Technical Service Center at 1 800...

Remote Loopback Test Issue 2 November 1996 D-7 Local Loopback Test with Self-Test to isolate the source of the problem between the data terminal equipment and the 8400B Plus Data Module’s EIA interface or the communications channel. Figure D-4. Remote Loopback Test Performing a Remote Loopback Test ...

Isolating Problems Using Loopback Data Tests D-8 Issue 2 November 1996 The system responds with: OK To halt the test, type: AT&T0 The system responds with the error count, then the completion signal: OK Remote Loopback Test with Self-Test This test evaluates the quality of the data transmission ...

Isolating Problems Using Loopback Data Tests D-10 Issue 2 November 1996 Loop-Around Data Test Arrangement The 8400B Plus Data Module Loop-Around Data Test Arrangement provides a simple mechanism that can be installed on a DEFINITY Communications System, to isolate Digital Communications Protocol (DC...

Loop-Around Data Test Arrangement Issue 2 November 1996 D-11 If the user is successful in connecting to the Test Arrangement (the data typed in is echoing back) then be assured that the user’s desktop equipment and connection through the switch are functioning correctly. Help Desk personnel can than...

Isolating Problems Using Loopback Data Tests D-12 Issue 2 November 1996 Arrangement. If this succeeds, the problem is isolated to the network or to the remote host equipment. The user is then instructed to call a Loop-Around Data Test Arrangement at the host site (see Figure D-8 ). If this call succ...

Loop-Around Data Test Arrangement Issue 2 November 1996 D-13 modem pool group to be tested. Separate telephone numbers should be administered for the Loop-Around Data Test Arrangements used for modem pool testing. The 8400B Plus Data Module must be connected to the PBX and powered up prior to using ...

Quick-Reference Summaries Issue 2 November 1996 E-3 &D0 Ignore DTR signal. &D1 Return to command mode if ON/OFF transition of DTR is detected; active call is not disconnected. &D2 Return to command mode if ON/OFF transition of DTR is detected; active call is disconnected. &D3 Perform...

Quick-Reference Summaries Issue 2 November 1996 E-9 Not used — &P0 Not used — &Q0 Not used — &R0 DSR circuit option always on &S0 RDL request granted &T4 Default user profile profile 0 &Y0 Table E-5. Factory-Default Configuration — Continued Parameter Value AT Command

Quick-Reference Summaries E-10 Issue 2 November 1996 Table E-6. M9/F25 Adapter Pin Assignments Pin Circuit Common Name Direction Lead Name 1 CF RLSD or DCD from 8400B Plus Data Module Received Line Signal Detector or Data Carrier Detector 2 BB RD from 8400B Plus Data Module Received Data 3 BA SD to ...

Quick-Reference Summaries Issue 2 November 1996 E-11 Table E-7. ASCII Character Set ASCIIValue ControlCharacter Key 000 NUL @ 001 SOH A 002 STX B 003 ETX C 004 EOT D 005 ENQ E 006 ACK F 007 BEL G 008 BS H 009 HT I 010 LF J 011 VT K 012 FF L 013 CR M 014 SO N 015 SI O 016 DLE P 017 DC1 Q 018 DC2 R 01...

Quick-Reference Summaries E-16 Issue 2 November 1996 120 x 121 y 122 z 123 { 124 | 125 } 126 ~ 127 DEL Table E-7. ASCII Character Set — Continued ASCIIValue ControlCharacter Key DELETE

Issue 2 November 1996 GL-1 GL A Asynchronous data communications A method of communicating data in which each “character” (a 7- or 8-bit data word) is sent or received separately at a selectable data transfer rate, and is framed by extra bits preceding and following the character. Various error-chec...

GL-2 Issue 2 November 1996 Glossary Communications parameters See data options. Configuration profiles See option profiles. D Data Communications Equipment (DCE) (Also called Data Circuit-terminating Equipment) The equipment that provides the functions required to establish, maintain and terminate a...

Issue 2 November 1996 GL-3 Glossary DCP See Digital Communications Protocol. Dial modifier Any character that may be inserted in a command line following the D (dial) command. See the D command in Appendix A and Appendix B for a description of valid dial modifiers. Digital Communications Protocol (D...

GL-4 Issue 2 November 1996 Glossary I Idle mode An operational mode in which the 8400B Plus Data Module is on-hook waiting either for an incoming call or to originate a call. L Linked mode An installation option, also called With Telephone, in which the 8400B Plus Data Module supports both data and ...

Issue 2 November 1996 IN-1 IN Index Symbols +++ , 3-10 A ASCII character backspace , 3-3 , C-12 carriage return , C-10 dialing string , A-6 escape sequence , C-9 line feed , C-11 set summary , E-11 AT commands &C , 3-13 , A-22 &D , 3-13 , 4-5 , A-23 , C-9 &F , 3-9 , 3-13 , 3-14 , A-24 &a...