Server Alarms - Avaya Support

Table 429: OLS/Power Unit Query Test (#127) 5 of 5
Error
Code
Test
Result
FAIL
(cont’d)
Description / Recommendation
Internal Looparound Test (#135)
Internal Looparound Test (#135)
a. If the recycle passes, the port carrier power supplies are
healthy and the problem is with one of the circuit packs.
Reinsert the circuit packs one at a time. If the status LED
shows red after reinserting a circuit pack, replace the defective
circuit pack. If the status LED still shows red, remove the
amphenol connector on the back of the slot containing this
circuit pack and enter recycle carrier. If the status LED
shows green, the problem is with one of the telephones or the
wiring to one of the telephones on this slot.
b. If either port carrier power supply still shows a red status LED,
check for bent pins and cable placement in the affected carrier.
There are failures that can occur on the PN’s Maintenance
circuit pack that will not be detected by their respective
maintenance, but that will cause many, if not every,
environment test to fail. If many environment tests are failing,
replace the suspect circuit pack, depending on the system
configuration, and the test rerun.
PASS Both OLSs or power supplies in the tested carrier were found to be healthy
by the PN’s Maintenance circuit pack. If the status LEDs on both OLSs or
power supplies are not showing green, the PN’s MAINT circuit pack may
have incorrectly reported the state of the OLSs. Resolve any alarms on
these MOs.
5 of 5
This test is destructive.
The Internal Looparound Test loops the transmitted DS1 bit stream back into the board receiver.
The loop occurs just before the DS1 facility interface. The test is highly destructive and can only
be initiated by a reset board location command.
All of the trunks on the DS1 or UDS1 Interface circuit pack must first be busied out using the
busyout board location command before the Internal Looparound Test can be executed.
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.
All trunks of the DS1 Interface circuit pack are restored to the in-service state after
release board location is entered
Communication Manager Release 5.0 Issue 4 January 2008 1587