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 10-1605UDS1-BD (UDS1 Interface Circuit Pack)
10
FAIL UDS1 Interface circuit pack failed the CSU Equipment
Loopback Test.
1. Retry the
test ds1-loop PCSS
ds1/csu-loopback-tests
command.
2. If the ELB test continues to fail, then either the
TN464F board, the CSU Module, or the I/O cable
between the backplane and the CSU module (or any
combination thereof) has failed. Attempt to isolate
the problem to one of these areas. Begin by
replacing the CSU Module and running the
test
ds1-loop PCSS ds1/csu-loopback-tests
command
again.
3. If the ELB test continues to fail, then replace the
TN464F board and run the
test ds1-loop PCSS
ds1/csu-loopback-tests
command again.
4. If the ELB test continues to fail, the problem could be
in the I/O cable between the backplane and the CSU
module.
PASS The ELB test executed successfully. The test pattern
was transmitted and received successfully over the
connection from the TN464F DS1 board to the
near-edge of the 120A1 CSU Module.
Table 10-470. TEST #1210 CSU Equipment Loopback Test — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page