User Guide

DEFINITY Enterprise Communications Server Release 5

Maintenance and Test for R5vs/si

555-230-123

Issue 1

April 1997

Maintenance Object Repair Procedures

Page 10-686EXP-INTF (Expansion Interface Circuit Pack)

2 FAIL The test tone was transmitted and detected correctly, but the

correct data packet was not detected by the TN778 Packet Control

circuit pack. This error only applies to the TN570 Expansion

Interface circuit pack.

1. Test the TN778 Packet Control circuit pack to verify that it is

functioning properly. If any tests fail, investigate those tests and

repair the Packet Control circuit pack.

2. If the Packet Control circuit pack checks out OK, issue the test

board PCSS long command on the Expansion Interface circuit

pack.

3. If Test #242 continues to fail, replace the Expansion Interface

circuit pack. Then, issue the test board PCSS long command

on the new Expansion Interface circuit pack.

4. If Test #242 continues to fail, replace the lightwave transceiver,

reset the circuit pack and issue the test board PCSS long

command on the Expansion Interface circuit pack.

Table 10-195. TEST #242 Expansion Interface Lightwave

Transceiver Loop Around Test — Continued

Error

Code

Test

Result Description/Recommendation

Continued on next page