Avaya 8400B Plus Loop-Around Data Test Arrangement

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 Communica tions

System, to isolate Digital Communications Protocol (DCP) data prob lems. In the

Loop-Around Data Test Arrangement one or more 8400B Plus Data Modules

are set up for auto-answer, and have the received data lead looped around to

the transmit data lead on the data module’s EIA interface. A user can then dial

up, and see whether data typed in at the local station is echoed back. A ty pical

use for this would be a user who calls the Help Desk with the complaint that

he/she cannot access a local host. The user can be instructed to utili ze the

Loop-Around Data Test Arrangement (see Figure D-6).

Figure D-6. Local Configuration, Using Loop-Around Data Test

Arrangement

Terminal

or

PC

Data Module,

PC/PBX,

or

Asynchronous

Data Unit

8400B Plus

Host

Data Module

Loopback

Plug

DCP

or ADU

Loop-Around Data

Test Arrangement

Two-Wir e

DEFINITY

Communications

System

G3V2

or later

Contents

Main Copyright 1996, Avaya Inc. All Rights Reserved Printed in USA Notice Your Responsibility for Your Systems Secu- rity Avaya Fraud Intervention Warranty CE Compliant 1 2 iv 3 4 Page Page About This Document Purpose Organization of This Guide viii How to Order Documentation How to Comment on This Document x Conventions Used ! Security Issues xii NETCON Data Channels PBX Security Measures xiv Lucent Technologies Fraud Intervention Related Documentation xvi Important Safety Instructions !SAVE THESE INSTRUCTIONS xviii Introduction Overview 1-2 Features Physical Description Page Page 1-6 Page Page Installation About the Terminal Device Page Selecting the Correct Installation Procedure Issue 2 November 1996 2-3 Figure 2-1. Components of the US Configuration and the International Configuration CONFIGURATIONS 2-4 What You Need Selecting the Correct Installation Procedure Issue 2 November 1996 2-5 8400B Plus Data Module Installation 2-6 8400B Plus Data Module Selecting an EIA Connector Cord Hardware Installation Connecting the 8400B Plus Data Module to the PBX Wall Jack 2-10 Connecting a Telephone Initial System Checks 2-12 Installation Options With Telephone US Companding Telephone Provides Dialing 2-14 Disable Data Metering Feature Immediate Speakerphone Activation Automatic Speakerphone Activation 2-16 Disable Busyout Feature During Local Loopback Test Changing Installation Options Page 2-18 LED Indications LED Indications Issue 2 November 1996 2-19 Table 2-2. LED Indication Summary LED Red Status of Unit Green 2-20 Table 2-2. LED Indication Summary Continued LED Description LED Red Status of Unit Green Selecting PC Communications Packages 2-22 If You Are Using a PC If You Are Using a Dedicated Terminal Configuration and Operation Operating Modes 3-2 Issuing Commands AT Command Line Prefix Command Buffer Command Line Set Up 3-4 Command Acknowledgment Repeating a Command 3-6 Sample Command Lines Configuration Parameters Parameter Storage and Retrieval 3-8 Page 3-10 Data Operation From Data Mode to Command Mode and Back Dialing a Data Call Storing a Telephone Number 3-12 Automatic Answering Remote Site Use 3-14 Reset and Configuration Recall Sample Command Lines 3-16 A Sample On-Line Session Starting the Session Possible Display Problems Disconnecting a Data Call 3-18 Voice Operations Using the 8400BPlus for Voice Dialing Dialing Instructions Dialing Delay Dialing Pause 3-20 Sample Command Line Page Page Troubleshooting How to Use This Chapter 4-2 Issue 2 November 1996 4-3 Table 4-1. Troubleshooting Guidelines Continued 4-4 Table 4-1. Troubleshooting Guidelines Continued Issue 2 November 1996 4-5 AT&D2 Table 4-1. Troubleshooting Guidelines Continued 4-6 Issue 2 November 1996 4-7 ATDP9,555-1212 ATDP9,,555-1212 ATS8=2 Table 4-1. Troubleshooting Guidelines Continued 4-8 ATS0=1 AT&D0 Table 4-1. Troubleshooting Guidelines Continued Issue 2 November 1996 4-9 ATQ0 ATX4 ATV1 Table 4-1. Troubleshooting Guidelines Continued 4-10 ATEl AT&S0&C0 ATE0 . As you type the ATE0 Table 4-1. Troubleshooting Guidelines Continued A AT Command Set A-2 Page A-4 Page A-6 Page A-8 Page A-10 Page A-12 Page A-14 Page A-16 Page A-18 Page A-20 Page A-22 Page A-24 Page A-26 Page A-28 Page A-30 Page Page B Dial Modifiers B-2 Page B-4 Page B-6 Page Page C S-Registers C-2 Page C-4 Page C-6 Page C-8 Page C-10 Page C-12 Page C-14 Page C-16 Page C-18 Page C-20 Page C-22 Page C-24 Page Page Page C-28 Page C-30 Page C-32 Page C-34 D Isolating Problems Using Loopback Data Tests Data Loopback Test D-2 Performing a Data Loopback Test Local Loopback Test D-4 Performing a Local Loopback Test Local Loopback Test with Self-Test Performing a Local Loopback Test with Self-Test D-6 Remote Loopback Test Performing a Remote Loopback Test D-8 Remote Loopback Test with Self-Test Performing a Remote Loopback Test with Self-Test D-10 Loop-Around Data Test Arrangement Page D-12 Setting Up a Loop-Around Data Test Arrangement Page D-14 Using the Loop-Around Data Test Arrangement Page Page E Quick-Reference Summaries E-2 Page Page Page E-6 Page E-8 Page E-10 Page E-12 Page E-14 Page E-16 Glossary Issue 2 November 1996 GL-1 GL A C D Issue 2 November 1996 GL-3 Glossary E H Page Page Page IN Index Symbols A B D E F G H I L N O P R S T V