Avaya Definity SI, Maintenance Manual, Page: 1944 / 2968

Maintenance Object Repair Procedures
555-233-123 10-1158 Issue 4 May 2002
M/T-PKT (Maintenance/Test Packet
Bus Port)
The Maintenance/Test Packet Bus Port is a port (always Port #4) on the TN771D
(or later vintage) Maintenance/Test circuit pack, which is required for G3iV1.1-286
or G3iV2-386. The Packet Bus port provides the following Packet Bus
maintenance functions:
■
Packet Bus fault detection - the ability to detect faults (for example, shorts,
open leads) on the Packet Bus autonomously (that is, without SPE
involvement).
■
Packet Bus reconfiguration - the ability to swap faulty leads with spare
leads autonomously so that the Packet Bus remains operational. This is
accomplished by sending messages to all Packet circuit packs [for
example, ISDN-BRI (TN556)] telling them which spare leads to use on the
Packet Bus.
Maintenance/Test Packet Bus Port maintenance ensures that these maintenance
functions are operating correctly. The Maintenance/Test Packet Bus Port is
alarmed if maintenance determines that the port’s maintenance functions are
operating incorrectly.
When Maintenance/Test Packet Bus Port maintenance determines that the
Packet Bus Port is defective, the Packet Bus fault detection and Packet Bus
reconfiguration functions provided by the port are turned off.
Maintenance/Test Packet Bus Port maintenance interacts with Packet Bus
maintenance. Therefore, there may be alarms on the Packet Bus when there is a
fault on the Maintenance/Test Packet Bus Port. Refer to PKT-BUS (Packet Bus)
Maintenance documentation for further information.
MO Name (in
Alarm Log)
Alarm
Level
Initial Command to
Run
1
1 Where P is the port network number (1 for PPN and 2 or 3 for EPN); C is the carrier
designation (A, B, C, D, or E); SS is the address of the slot in the carrier where the circuit
pack is located (01, 02, ..., etc.); and pp is the 2-digit port number (for example, 01).
Full Name of MO
M/T-PKT Minor test port PCSSpp l Maintenance/Test Packet Bus Port
M/T-PKT Warning release port PCSSpp Maintenance/Test Packet Bus Port