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DS1-BD (DS1 Interface Circuit Pack)
Issue 1 June 2005 1039
The status of the Far CSU Loopback test appears in the hardware error log via Error Type
#3901. Several aux values give information on the status of the test.
Use list measurements ds1 summary to show the length of time the test has been running
(Test Duration field) and number of bit errors detected (Loopback/Span Test
Bit-Error Count field). If the test pattern is passed through the loop back cleanly, the
number of bit errors should be very low. The command also shows the type of loop-back/span
test executing (Test field), the type of pattern generated for the loop-back/span test (Pattern
field), and whether the pattern (i.e., 3-in-24 Pattern) is synchronized (Synchronized field).
Use test ds1-loop location end-loopback/span-test or release board to end
the test. Use release board to restore all trunks or ports on the TN767E DS1 Interface
circuit pack to the in-service state.
Table 357: Test #1213 Far CSU Loop-Back Test
Error
Code
Test
Result
Description / Recommendation
ABRT Internal system error
1. Retry test ds1-loop location
far-csu-loopback-test-begin at 1-minute intervals up to 5
times.
1005 ABRT Far CSU Loopback test cannot be executed in the current configuration. To
run this, the TN767E (or higher-suffixed) DS1 must be administered for
24-channel operation. The Bit Rate field on the DS1 circuit pack
administration screen must be set to “1.544” for 24-channel operation.
1015 ABRT Ports on the DS1 Interface circuit pack have not been busied out to
out-of-service.
1. Enter busyout board location to put all trunks or ports of the DS1
Interface circuit pack into the out-of-service state.
2. Retry the command.
1039 ABRT The DS1 Interface circuit pack is providing timing for the system. Executing
this test could cause major system disruption.
If the DS1 Interface circuit pack needs to be tested, set the synchronization
reference to another DS1 Interface circuit pack or to the Tone-Clock circuit
via the following command sequence:
1. Enter disable synchronization-switch.
2. Enter enable synchronization-switch set
synchronization location.
3. Enter enable synchronization-switch.
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