Lucent Technologies Release 7 Pack et Bus Fault Isolation and Repair, Packet Bus Fault Isolation and Repair,

DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4 June 1999
Maintenance Object Repair Procedures
9-804EXP-INTF (Expansion Interface Circuit Pack)
9
2. Enter the test board UUCSS r3 command for this circuit pack. If
this error continues to appear, rep lace the EI circuit pac k.
n. Error Types 3074 and 3075 indicate failures of the Expansion Interfac e
Circuit Pack Packet Path Test. This packet path test exercises circ uitry on
the Expansion Interface circu it pack, the neighbor Exp ansion Interface or
Switch Node Interface circ uit pack, and any intervening DS1 CONV circuit
packs (if the EPN is remoted).
1. Certain packet bus faults can cause these errors without the EI
being defec tive. Check to see of PKT-BUS errors are also present.
If they are, use the PKT-BUS section of this chapter and
Pack et Bus
Fault Isolation and Repair
in Chapter 6 to diagnose th e problem.
2. If Error Type 3075 is present without Error Type 3074, replace the
Expansion Interface circu it pack.
3. If Error Type 3074 exists with or without 3075, run test board
UUCSS on the EI and follow the repair proced ures for any test that
does not pass.
4. If PKT-BUS errors are not present, and replacing the Expansion
Interface does not resolve the p roblem, there is still the possibility of
a packet bus fault. See
Packet Bus Fault Isolation and Repair in
Chapter 6.
o. Error Type 3330 indicates a failure of a diagnostic component on the
Expansion Interface circu it pack. The failed comp onent will not impair
service, but it may leave the Expansion Inter face circuit pac k in a state
where the Expansion Interface circ uit pack cannot detec t errors.
1. Replace the Expansion Interface c ircuit pack at a time when it is
most convenient for the customer (this may c ause service outages).
p. Error Type 3585 indicates that the Expansion Interfac e circuit pack
experienced a series o f very short out of frame conditions with in several
minutes. This may indicate transmission diffic ulties over the fiber link. If
this condition ceases, the war ning alarm should be resolved within 15
minutes.
1. Enter display errors and resolve any SNC-BD, TDM-BUS,
TDM-CLK or SYNC errors.
2. Perform the “Fiber Fault Isolation Procedure”
described in Chapter
5.
3. If the alarm is not resolved within the next 15 minutes, rep lace the
lightwave transceiver on the Expansion Inter face circuit pac k
reporting the prob lem and on the connected Expansion Interface
circuit pack, Switc h Node Interface circuit p ack, or DS1 CONV
circuit pack.
4. If the alarm is not resolved within the next 15 minutes, rep lace the
Expansion Interface circu it pack reporting the al arm.