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DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-885PKT-BUS (Packet Bus)
3
PKT-BUS (Packet Bus)
The Packet Bus consists of a single bus, and one such bus appears in the
system. There is one instance of the Packet Bus maintenance object.
The Packet Bus is used to carry ISDN-BRI, ISDN-PRI, and ASAI signaling
information. The SPE interface to the Packet Bus is the
second
Packet Interface
instance (PKT-INT, instance1A2) on the TN798 Processor Circuit Pack, which
works in concert with the Bus Bridge circuitry on the TN799 C-LAN circuit pack to
provide Packet Bus access. Packet Bus maintenance is performed only when the
Packet Intf2?
field on the Maintenance-Related System Parameters form is
set to
y
. Packet Bus testing is dependent on the following hardware components:
■ TN771 Maintenance/Test circuit pack, M/T-PKT port
■ TN798 Processor circuit pack, PKT-INT instance 1A2
■ TN556 ISDN-BRI Line circuit pack
Packet Bus tests may abort if some of this hardware is not present in the system.
Also, these tests may yield inconsistent results if some of this hardware is
defective.
The interactions between the Packet Bus and the circuit packs that use the bus
are complex. For this reason, the Packet Bus can be alarmed due to a circuit
pack failure and, conversely, circuit packs can be alarmed due to a Packet Bus
failure. This section on PKT-BUS is limited to a description of the Error and Alarm
Log entries for the Packet Bus maintenance object and to a description of the
Packet Bus test sequence.
NOTE:
Refer to Chapter 9, “Packet Bus Fault Isolation and Correction”, in
DEFINITY® Enterprise Communications Server Release 8.2, Maintenance for
R8si, 555-233-123, Issue 1, April 2000, Comcode 108678715
,for a complete
discussion of Packet Bus maintenance and also the interactions of the bus
with the Packet circuit packs. The chapter discusses fault isolation and
correction procedures, and it should be referenced for all procedures and
required decisions. The "Packet Bus Fault Isolation Flowchart" section of the
chapter is the normal starting point for experienced technicians; however,
technicians who are unfamiliar with the Packet Bus and its use should refer
to the introductory material.
MO Name (in
Alarm Log)
Alarm
Level Initial Command to Run Full Name of MO
PKT-BUS MAJOR test pkt port l r 2 Packet Bus
PKT-BUS MINOR test pkt port l Packet Bus
PKT-BUS WARNING test pkt port l Packet Bus