DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-614DS1-BD (DS1 Interface Circuit Pack)
9
if the 120A CSU Module is present, administered, and connected to a 1.544
Mbps TN767E 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 DS1 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 TN767E DS1 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.
When the test is complete, all trunks or ports on the TN767E DS1 Interface circuit
pack are restored to the in-service state after the
release board
command is
entered
Table 9-248. TEST #1211 CSU Repeater Loopback Test
Error
Code
Tes t
Result Description/ Recommendation
ABORT Internal system error
1. Retry test ds1-loop UUCSS ds1/csu-loopback-tests 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 test ds1-loop UUCSS ds1/csu-loopback-tests.
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