Payload Loopback Alarm - Avaya G700 Maintenance Manual

6 Avaya MultiVantage Software-Controlled Maintenance:

Payload Loopback Alarm

The Payload Loopback (PLB) is used by the remote DS1 endpoint to put the switch DS1 into a
loopback mode. The PLB Alarm activates when a network protocol activate bit pattern arrives over
the 4Kbps ESF data link on the DS1 line. The PLB deactivates when a network protocol deactivate bit
pattern arrives over the 4Kbps ESF data link on the DS1 line.
Since PLB is a maintenance condition rendering all DS0 channels unavailable for signaling or bearer
traffic, maintenance software treats this the same as a Blue Alarm
Table 66. TEST #139 Blue Alarm Inquiry Test
Error Test
Code Result
ABORT
2000 ABORT
2100 ABORT
216
Description/ Recommendation
Internal system error
Retry the command at 1-minute intervals for a maximum of 5 times.
Response to the test was not received within the allowable time
period. This may be due to hyperactivity. Error Type 1538 in the error
log indicates hyperactivity. The hyperactive Media Module is out of
service and one or more of the following symptoms may be
exhibited.
The DS1-MM tests (such as Test #138 and Test #139) are aborting
with error code 2000.
The tests run on the ports of this Media Module are returning a no
board result.
A busyout or a release command has no affect on the test results.
A list config command shows that the Media Module and the ports
are properly installed.
When hyperactivity occurs, the Media Module is isolated from the
system, and all of the trunks for this Media Module are placed into
the out of service state. The system will try to restore the Media
Module within 15 minutes. When no faults are detected for 15
minutes, the DS1-MM interface Media Module is restored to normal
operation. All of the trunks for the DS1-MM interface Media Module
are then returned to the in service state. Hyperactivity is often
caused by the associated facility. In such a case, faults (such as
slips, misframes, or blue alarms) would be entered in the error log. In
addition, many hardware errors would be logged against the
associated trunk circuits. If the facility is OK and the error occurs
again after 15 minutes, replace the Media Module.
Could not allocate the necessary system resources to run this test.
Retry the command at 1-minute intervals for a maximum of 5 times.
MG-DS1 (DS1 Interface Media Module)
Maintenance for S8300/S8700 and G700
555-234-101 — Issue 2 — October 2002
1 of 2