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DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Packet Bus Fault Isolation and Correction
Page 9-33Packet Bus Fault Correction
9
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.
2. Determine if the Packet Bus fault is still present. If so, and if there are
shorts on the Packet Bus, perform Procedure 2 and/or Procedure 3 for
only the circuit packs in those carriers that are connected to the
‘‘shortened’’ Packet Bus. (Procedure 2 is performed for port circuit packs,
and Procedure 3 is performed for processor complex circuit packs.)
3. If the Packet Bus fault is not present, extend the Packet Bus to another
carrier, and repeat the procedure in the previous step. When a carrier that
causes the fault to recur is added, and if there are shorts, perform
Procedure 2 and/or Procedure 3 for only the circuit packs in that carrier.
4. If the Packet Bus fault recurs as the Packet Bus is extended, and if
Procedures 2 and 3 (if performed) do not resolve the problem, the added
carrier(s) that caused the problem to recur are defective and must be
replaced.
Other Port Networks:
1. Terminate the Packet Bus so that it extends only from the carrier that
contains the Active Expansion Interface to the nearest carrier that contains
the Maintenance/Test circuit pack. Place the Maintenance/Test circuit
pack into a carrier that contains an Expansion Interface circuit pack in
order to allow the procedure to isolate the failure to the smallest possible
number of carriers.
2. Determine if the Packet Bus fault is still present. If so, and if there are
shorts on the Packet Bus, perform Procedure 2 and/or Procedure 3 for
only the circuit packs in those carriers that are connected to the
‘‘shortened’’ Packet Bus.
3. If the Packet Bus fault is not present, extend the Packet Bus to another
carrier, and repeat the procedure in the previous step. When a carrier that
causes the fault to recur is added, and if there are shorts, perform
Procedure 2 and/or Procedure 3 for only the circuit packs in that carrier.
4. If the packet bus fault recurs as the packet bus is extended, and if
Procedures 2 and 3 (if performed) do not resolve the problem, the added
carrier(s) that caused the problem to recur are defective and must be
replaced.