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DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-1234UDS1-BD (UDS1 Interface Circuit Pack)
3
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 Lucent 120A1 CSU Module or the 401A T1 Sync Splitter and tests the
connection from the TN464F DS1 board to and including the CSU Module/T1
Sync Splitter circuitry. This test will only be performed if the Lucent 120A1 CSU
Module or the 401A T1 Sync Splitter is present, administered, and connected to a
1.544 Mbps TN464F 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 via 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 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.
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 3-530. 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