Avaya Definity SI, Maintenance Manual, Page: 785 / 2968

Packet Bus Fault Correction
Issue 4 May 2002 9-33 555-233-123
Figure 9-7. Carrier Rewiring Example
Procedure 4 is organized into two parts, as follows:
Part 1:
1. Power down the PN. See ‘‘Removing Power’’ section in Chapter 5,
‘‘Routine Maintenance Procedures’’ .
2. Replace all of the TDM/LAN cables and both TDM/LAN terminators.
3. Restore power to the PN. See ‘‘Restoring Power’’ section in Chapter 5,
‘‘Routine Maintenance Procedures’’ .
4. Determine if the packet bus fault is still present.
5. If the fault is present, go to Part 2.
Part 2:
Processor Port Network:
1. Terminate the Packet Bus so that it extends only from the Active control
carrier (that is, the carrier that contains the Active SPE) to the carrier that
contains the Maintenance/Test circuit pack. To allow this procedure to
isolate the failure to the smallest possible number of carriers, place the
Maintenance/Test circuit pack into a carrier that contains a processor
complex, if possible.
Terminator
TDM/LAN
Cable
Normal Cabinet
(Rear View)
Control Carrier
Modified Cabinet
(Rear View)