Demand test descriptions and error codes - Avaya Support

CAUTION: Before
2. Check for errors via display errors with the Category field set to tone and the Active
Alarms field set to n. Some of the alarms on PN objects might have been resolved if the
PN went down. Refer to the appropriate MO Maintenance documentation for descriptions
of any of the errors occurring at about the same time as the EXP-PN errors, SYS-LINK
errors against EAL s, RNLs, or LNLs, or FIBER-LK (769, 1025, or 1281) errors. Resolve
any active alarms. Also, if Error Type 18 was logged against the SYNC MO when the PN
went down, the problem was probably that the synchronization on-line reference became
invalid. Since reference switching was disabled, the Tone-Clock did not switch from the
invalid reference. Therefore, the Tone-Clock circuit pack put out a system clock that was
“out of spec.” Enter enable synchronization-switch. If the PN is down, reseat the
Tone-Clock circuit packs on the PN. This action should restore the PN to service.
Execute Steps 3 and 4 in the order most convenient to you and least destructive to the
customer.
3. Check to see if the fiber-optic cable is transmitting properly via the following procedure on
one of the out-of-service links, or use the Fiber link fault isolation in Maintenance
Procedures for Avaya Aura Communication Manager, Media Gateways and Servers
(03-300432).
a. Carefully record the symptoms (amber LED pattern and test failing) that were
occurring on the PN EI circuit pack and the PN EI circuit pack or the connected CI
circuit pack in the case of a Center Stage system. Clearly indicate what symptoms are
occurring on which EI/SNI circuit pack.
! CAUTION:
proceeding, note which is the current transmit fiber and which is the
current receive fiber for proper re-connection.
b. Disconnect the transmit and receive fiber pair from the lightwave transceiver on the
back of one of the EI circuit pack slots that is exhibiting symptoms.
c. Connect what was formerly the transmit fiber to the receive jack.
d. Connect what was formerly the receive fiber to the transmit jack.
e. Perform steps b, c, and d on the opposite end of the fiber and the lightwave transceiver
on the back of the connected EI or SNI circuit pack slot.
f. If the symptoms that were formerly occurring on the EI circuit pack that was exhibiting
these symptoms are now occurring on the connected EI or SNI circuit pack and vice
versa, the fiber is defective and should be replaced.
4. Determine whether the problem is due to a defective active Tone-Clock circuit pack. Refer
to the preceding list of symptoms to decide which network contains the suspect active
Tone-Clock.
438 Maintenance Alarms for Communication Manager, Media Gateways and Servers