Avaya S8700 Maintenance Manual page 1956

Maintenance-Object Repair Procedures
h. The Maintenance/Test packet bus port (M/T-PKT) for this port network is
not in service. This alarm does not appear for PNs in high-reliability
systems since a TN771D is not required there. The error indicates one or
more of the following:
The TN711 must be installed before other packet bus alarms can be
resolved. (Alarms against a given MO are not resolved until every
alarm-generating condition has been cleared).
System Technician-Demanded Tests:
Descriptions and Error Codes
Always investigate tests in the order presented in the following tables. For
example, by clearing error codes associated with the Packet Circuit Pack Audit
test (#573), you may also clear errors generated from other tests in the testing
sequence.
Order of Investigation
Packet Circuit Pack Audit test (#573)
Maintenance/Test Circuit Pack Query test (#572)
1. D = Destructive; ND = Nondestructive
Maintenance/Test Circuit Pack Query Test (#572)
This test queries the Maintenance/Test packet bus port about the state of health of
the packet bus. If the Maintenance/Test circuit pack indicates that the packet bus
has faults, the test fails. The corresponding failure code describes the severity,
type, and number of faults. The test passes if the packet bus is fault-free.
NOTE:
A Maintenance/Test circuit pack is usually absent from a duplex-, or
high-reliability system's PNs. However, customers may optionally install a
Maintenance/Test circuit pack both to utilize its enhanced analog-trunk and
digital-line testing capabilities and to enhance the system's ability to quickly
recognize a packet bus failure.
8-1234 Issue 1 May 2002
The packet bus port has been busied out (indicated by Error Type
18), and a Warning alarm is active against M/T-PKT in the same port
network. Release the port by entering release port UUCSS04.
The packet bus port has failed. Look for alarms against M/T-PKT,
and attempt to resolve these alarms.
The Maintenance/Test circuit pack was not recognized by the
system at the last system restart. Replace the Maintenance/Test
circuit pack.
There is no Maintenance/Test circuit pack in this port network. One
must be installed.
Short Test Long Test
Sequence Sequence
X X
X X
1
D/ND
ND
ND
555-233-143