Filter
Top Products
DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Packet Bus Fault Isolation and Correction
Page 9-27Packet Bus Fault Correction
9
2. If there are errors for the circuit pack, refer to the appropriate maintenance
documentation in Chapter 10, ‘‘
Maintenance Object Repair Procedures’’,
and follow the recommended maintenance procedure to resolve the
errors. Note that some of these procedures may refer to PKT-BUS
maintenance as the cause of the fault; if so, implement these Packet Bus
Fault Correction procedures at that point.
3. After implementing the repair procedure for the circuit pack (and
regardless of whether this procedure succeeds or fails), determine if the
Packet Bus fault is still present.
4. If the Packet Bus fault is still present, implement Procedure 1 for the next
circuit pack.
5. If there are no more circuit packs in the list, go to Procedure 2.
6. If the Packet Bus fault has been resolved, the procedures are completed.
Procedure 2
Procedure 2 removes and reinserts port circuit packs (those in the purple slots)
one or several at a time. Use Procedure 2 for each port circuit pack in the port
network until either (1) the problem is resolved or (2) there are no more circuit
packs in the port network.
NOTE:
This procedure should also be used for the TN570 Expansion Interface
circuit pack in a standard system. For a High or Critical Reliability system,
refer to Procedure 3 for the Expansion Interface circuit pack. Also, refer to
Procedure 3 for the TN768 or TN780 Tone-Clock circuit pack in a switch
with a High or Critical Reliability system.
!
CAUTION:
The Expansion Interface circuit pack should be the last one checked in this
procedure, since removing this circuit pack disconnects its EPN. The
Tone-Clock circuit pack should be the next-to-last one checked. In
addition, the TN771 must be reseated after the Tone-Clock is reinstalled.
Table 9-1. Packet Circuit Packs
Circuit Pack Name
Circuit Pack
Code Associated Maintenance Objects
ISDN-BRI TN556 BRI-BD, BRI-PORT, ABRI-PORT,
BRI-SET, BRI-DAT, ASAI-ADJ
Maintenance/Test TN771 M/T-BD, M/T-PKT
Packet Control TN778 PKT-CTRL
Expansion Interface TN570 EXP-INTF