Server Alarms - Avaya Support

PKT-BUS (Packet Bus)
MO Name in Log Alarm Level Initial Command to Run 1
1. P is the port-network number indicated in the PORT field from the Alarm or Error Log.
PKT-BUS (Packet Bus)
The packet bus consists of a single bus, and one such bus appears in each port network. The
packet bus in each port network is physically independent from those in other port networks, so
each port network has a separate PKT-BUS MO. This bus supports the following types of
connections:
● Logical control links between the server and every PN
● ISDN-BRI D-channel transport (signaling)
● ASAI D-channel transport (signaling)
● ISDN-PRI D-channel (signaling)
Full Name of MO
PKT-BUS MAJ test pkt P long r 2 1 Packet Bus
MIN
WRN
test pkt P long
● System Access Ports
The TN2312AP IPSI circuit pack’s Packet Interface circuit provides an interface to the packet
bus for the server. Packet bus testing depends on the TN771D Maintenance/Test circuit pack.
Packet Bus tests will abort if the TN771D circuit pack is not inserted in the port network.
The interactions between the packet bus and the circuit packs that use the bus are complex.
Circuit pack failures can alarm the packet bus, while packet bus faults can alarm or interrupt
service to one or more circuit packs and their ports and endpoints. The Isolating and repairing
packet-bus faults section in Maintenance Procedures (03-300432) describes packet bus
maintenance and interactions with circuit packs. That section should be referenced for all
troubleshooting and repairs. The flowchart is the normal starting point for experienced
technicians.
This section on the PKT-BUS MO is limited to a description of the Error and Alarm Log entries
and the test sequence for the packet bus. The following list summarizes some of the important
points to consider when working with the packet bus.
● The Maintenance/Test circuit pack (TN771D) is a critical tool for isolating packet bus faults.
This circuit pack resides in each port network of a critical-reliability system (duplicated
servers and PNC). If a TN771D is absent, one must be taken to the customer site to allow
for proper fault isolation. Isolating and repairing packet-bus faults in Maintenance
Procedures (03-300432) describes the Packet Bus testing facilities of the TN771D and
when one must be taken to the customer site.
Communication Manager Release 5.0 Issue 4 January 2008 1081