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8400B Plus Data Module User’s Guide
555-020-709
Issue 2
November 1996
Isolating Problems Using Loopback Data Tests
D-14
Loop-Around Data Test Arrangement
Setting Up a Loop-Around Data Test
Arrangement
The Loop-Around Data Test Arrangement does not require special switch
administration over and above the normal switch administration procedure for
the 8400B Plus Data Module.
If the Loop-Around Data Test Arrangement is being used to test modem pools
(see Figure D-7
), separate 8400B Plus Data Modules must be set up for each
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 it in the Loop-Around Data Test Arrangement. Connect an
asynchronous data terminal to the 8400B Plus Data Module using the standard
EIA Connector cord and supplied M9/F25 Adapter. The speed of the terminal
should be set as indicated in Table D-1
.
Once the data rate has been set on the terminal, type the following command:
AT&FS0=1E0Q1&W0&W1
Table D-1. Setting Data Terminal Speed
Access Set Terminal Data Rate To
Direct 19200 bps
Through a modem pool that supports
speeds of:
■ 300 and 1200 bps
■ 300, 1200, and 2400 bps
■ 1200, 2400, 4800, and 9600 bps
■ 4800 and 9600 bps
1200 bps
2400 bps
9600 bps
9600 bps
ENTER
020709_2.book Page 14 Friday, April 23, 1999 5:39 AM
- 8400B Plus Data Module 1
- User’s Guide 1
- Contents 3
- About This Document 5
- Organization of This Guide 6
- How to Order Documentation 7
- How to Comment on This 7
- Document 7
- Conventions Used 8
- NETCON Data Channels 10
- PBX Security Measures 11
- Security Issues 12
- Lucent Technologies Fraud 13
- Intervention 13
- Related Documentation 13
- Important Safety Instructions 15
- SAVE THESE INSTRUCTIONS 16
- Introduction 17
- Features 18
- Physical Description 19
- Front Panel 20
- Rear Panel 21
- Power Supply Unit 23
- CAUTION: 23
- Installation 25
- Procedure 26
- LINEPHONE 27
- -7 +8 27
- What You Need 28
- Hardware Installation 32
- PBX Wall Jack 33
- Initial System Checks 35
- Installation Options 36
- US Companding 37
- Telephone Provides Dialing 37
- Disable Data Metering Feature 38
- Loopback Test 40
- LED Indications 42
- Status of Unit 43
- LED Description 43
- Selecting PC Communications 45
- Packages 45
- If You Are Using a PC 46
- Configuration and Operation 47
- Issuing Commands 48
- Command Buffer 49
- Command Line Set Up 49
- Command Acknowledgment 50
- Repeating a Command 51
- Sample Command Lines 52
- Configuration Parameters 53
- Data Operation 56
- Storing a Telephone Number 57
- Automatic Answering 59
- Remote Site Use 59
- A Sample On-Line Session 62
- Starting the Session 62
- Possible Display Problems 63
- Disconnecting a Data Call 63
- Voice Operations 64
- Dialing Instructions 65
- Dialing Delay 65
- Dialing Pause 65
- Sample Command Line 66
- Troubleshooting 69
- How to Use This Chapter 71
- S7 does 72
- ATDP9,555-1212 75
- ATDP9,,555-1212 75
- 1 in the example) to the 76
- AT&D0 76
- AT Command Set 79
- Continued: 85
- 555-020-709 100
- November 1996 100
- Dial Modifiers 111
- S-Registers 119
- Label Description 144
- Data Loopback Test 153
- Local Loopback Test 155
- Self-Test 158
- Remote Loopback Test 159
- Remote Loopback Test with 161
- Communications 163
- Arrangement 166
- Quick-Reference Summaries 169
- Pin Circuit 178
- Name Direction Lead Name 178
- Glossary 185
- D (dial) command 187
- D command 187
- AT command set 187
- 555-020-709 Issue 2 191
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