Avaya Definity SI Maintenance Manual page 1569

EXP-INTF (Expansion Interface Circuit Pack)
Table 10-290. TEST #238 EI Fiber Out-of-Frame Query Test — Continued
Error
Code
555-233-123
Test
Result
FAIL 5. Execute the test tone-clock PC command where P is the
port network which contains the Expansion Interface
(cont'd.)
circuit pack's neighbor Expansion Interface on the
OPPOSITE end of the fiber and C refers to the carrier
which contains the Active Tone-Clock on port network P.
Also, look for SYNC errors in the Error Log. If there are
any tests failing or errors found, resolve these problems
and then rerun Test #238. If the test still fails and the
system has a Standby Tone-Clock, switch the Active
Tone-Clock on this network (set tone-clock PC
command, where P is the port network containing the
Expansion Interface circuit pack on the OPPOSITE end of
the fiber and C is the carrier containing the Standby
Tone-Clock). Also, if the EPN is down, replace the EPN
Tone-Clock circuit pack in carrier A of the EPN.
6. Check for errors using the display errors command with
the Category field set to "tone" and the Active alarms field
set to "n." Some of the alarms on EPN objects might have
been resolved if the EPN went down. Refer to the
documentation for descriptions of any of the error types
occurring at about same time as the EXP-LINK error
types. Resolve any active alarms. Also, if Error Type 18
was logged against the SYNC MO when the EPN 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
away from the invalid reference. Therefore, the
Tone-Clock put out an "out-of-spec" system clock.
Execute the enable synchronization-switch command.
If the EPN is down, reseat the Tone-Clock circuit packs on
the EPN. This action should restore the EPN to service.
7. Follow the procedure described in "Relationship Between
Expansion Interface and Tone-Clock Circuit Packs" near
the beginning of this section if the symptoms match those
described there.
PASS The Expansion Interface circuit pack has detected the valid
framing signal on the fiber.
1. Refer to errors from other Expansion Interface circuit pack
tests if the link is still not functioning.
Description/Recommendation
Continued on next page
Issue 4 May 2002 10-783