Server Alarms - Avaya Support

CAUTION: Before
EXP-INTF (Expansion Interface Circuit Pack)
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 (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.
Communication Manager Release 5.0 Issue 4 January 2008 811