UDS1-BD (UDS1 Interface Circuit Pack)
Issue 4 May 2002
10-1911 555-233-123
CSU Repeater Loopback Test (#1211)
This test is destructive.
The CSU Repeater Loopback (RLB) Test causes a loopback at the far-edge of the
local Avaya 120A1 CSU Module or the 401A T1 Sync Splitter and tests the
connection from the DS1 board to and including the CSU Module/T1 Sync Splitter
circuitry. This test is only performed if the Avaya 120A1 CSU Module or the 401A
T1 Sync Splitter is present, administered, and connected to a 1.544 Mbps DS1
circuit pack on the back of the port carrier.
The test is destructive and can only be initiated by a system technician demanded
test ds1-loop UUCSS ds1/csu-loopback-tests command.
All trunks or ports on the UDS1 Interface circuit pack must be busied out using the
system technician busyout board command before running the RLB Test.
When the RLB Test is initiated, maintenance software sends an appropriate
message to the UDS1 Interface circuit pack to start the test. The board sets up the
RLB loopback, transmits a test pattern, and verifies that the pattern is received
unaltered through the loopback. If the transmitted and received pattern is
different, the test fails.
When the test is complete, all trunks or ports on the UDS1 Interface circuit pack
are restored to the in-service state after release board is entered.
Table 10-684. TEST #1211 CSU Repeater Loopback Test
Error
Code
Te s t
Result Description/Recommendation
ABORT Internal system error
1. Retry the test ds1-loop UUCSS ds1/csu-loopback-tests
command at 1-minute intervals a maximum of 5 times.
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 DS1Circuit Pack administration form must be set to
integrated and the Bit Rate field on the DS1 Circuit
Pack administration form must be set to
1.544 (24-channel
configuration).
1. Use the change ds1 UUCSS 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 UUCSS ds1/csu-loopback-tests
command.
Continued on next page
To Next Page
Loading...
