Avaya S8700 Maintenance Manual page 1323

DS1-BD (DS1 Interface Circuit Pack)
All trunks on the DS1 Interface circuit pack must be busied out via the system
technician busyout board command before running the Internal Looparound test.
When the Internal Looparound test is initiated, maintenance software sends
appropriate messages to the DS1 Interface circuit pack to start the test. The test
uses the Tone Generator and Tone Detector to exercise a bit pattern consistency
test for all ports. If the transmitted and received bit patterns on a trunk are
different, the test fails.
When the test is complete, the maintenance software sends a stop loop around
message to the DS1 Interface circuit pack to put the circuit pack back into the
normal operation mode. All trunks of the DS1 Interface circuit pack are restored
to the in-service state after the release board command is entered
Table 8-244. Test #135 Internal Loop-Around Test
Error Test
Code Result Description / Recommendation
2012 ABORT Internal system error
1. Retry the command at 1-minute intervals up to 5 times.
1002 ABORT The system could not allocate time slots for the test. The system may be under
heavy traffic conditions or it may have time slots out-of-service due to
TDM-BUS errors.
1. If system has no TDM-BUS errors and is not handling heavy traffic, repeat
1003 ABORT The system could not allocate a tone receiver for the test. The system may be
oversized for the number of Tone Detectors present, or some Tone Detectors
may be out of service.
1. Resolve any TTR-LEV errors.
2. Resolve any TONE-PT errors.
3. If neither condition exists, retry the test at 1-minute intervals up to 5 times.
1004 ABORT Received an incoming call on a port of the DS1 circuit pack during the test.
1. Enter the busyout board UUCSS command to put every trunk on the DS1
2. Retry the command at 1-minute intervals up to 5 times.
1015 ABORT Ports on DS1 Interface circuit pack have not been busied out.
1. Enter the busyout board UUCSS command to put every trunk on the
2. Retry the command.
555-233-143
test at 1-minute intervals up to 5 times.
circuit pack into the out-of-service state.
DS1circuit pack into the out-of-service state.
Continued on next page
Issue 1 May 2002 8-601