User's Guide
Table Of Contents
- Table of Contents
- About This Document
- 1. Introduction
- 2. Installation
- 3. Configuration and Operation
- 4. Troubleshooting
- A. AT Command Set
- B. Dial Modifiers
- C. S-Registers
- D. Isolating Problems Using Loopback Data Tests
- E. Quick-Reference Summaries
- Glossary
- Index
8400B Plus Data Module User’s Guide
555-020-709
Issue 2
November 1996
Isolating Problems Using Loopback Data Tests
D-6
Local Loopback Test with Self-Test
Performing a Local Loopback Test with
Self-Test
To initiate the test, type:
AT&T8
This test will continue for the period of time indicated in S-register S18. To
terminate the test before the test timer expires, type:
AT&T0
The system responds with the error count, then the completion signal:
000
OK
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
1 800 242-2121.
ENTER
ENTER
020709_2.book Page 6 Friday, April 23, 1999 5:39 AM