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 10-1607UDS1-BD (UDS1 Interface Circuit Pack)
10
When the RLB Test is initiated, maintenance software sends an appropriate
message to the TN464F UDS1 Interface circuit pack to start the test. The board
will set up the RLB loopback, transmit a test pattern, and verify that the pattern is
received unaltered through the loopback. If the transmitted and received pattern
is different, the test fails.
In addition, the DS1 circuit pack hardware applies a DC current while the test is
running in order to detect any broken wires which may not be detected by the
loopback pattern itself.
When the test is complete, all trunks or ports on the TN464F UDS1 Interface
circuit pack are restored to the in-service state after the release board command
is entered.
Table 10-471. TEST #1211 CSU Repeater Loopback Test
Error
Code
Test
Result Description/ Recommendation
ABORT Internal System Error
1. Retry the
test ds1-loop PCSS
ds1/csu-loopback-tests
command at 1-minute
intervals a maximum of 5 times.
2. If the test continues to abort, escalate the problem.
1005 ABORT CSU Repeater Loopback Test cannot be executed in
the current configuration. To run this test, the
Near-End
CSU Type
field on the DS1 circuit pack administration
form must be set to
integrated , and the "Bit Rate" field
must be set to "1.544" (24-channel operation).
1. Use the change ds1 PCSS command to set the
Near-End CSU Type field on the DS1 circuit pack
administration form to
integrated , and/or change the
"Bit Rate" field to "1.544" if the board is to be used in
24-channel configuration.
2. Retry the
test ds1-loop PCSS
ds1/csu-loopback-tests
command. 3) If the test
continues to abort, escalate the problem.
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