DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-1239PKT-BUS (Packet Bus)
9
h. The Maintenance/Test packet bus port (M/T-PKT) for this port-network is
not in service. This alarm does not ap pear for EPNs in Standard or High
Reliability systems since a TN771 is not required there. The error indi cates
one or more of the following:
■The packet bus port h as been busied out (ind icated by Error Type
18), and a Warning alarm is active ag ainst M/T-PKT in the same
port-network. Release the port by entering release port UUCSS04.
■The packet bus port h as failed. Look for alarms against M/T-PKT,
and attempt to resolve these alarms.
■The Maintenance/Test circuit pack was not recog nized by the
system at the last system restart. Replace the Maintenanc e/Test
circuit pack.
■There is no Maintenance/Test circuit pack in this port-ne twork. One
must be installed.
The TN711 must be installed before other pac ket bus alarms can b e
resolved. (Alarms against a g iven maintenance objec t are not resolved
until all alarm-generating c onditions have been c leared).
System Technician-Demanded T ests: Descripti ons
and Error Codes
Always investigate tests in the order p resented in the following tab les. By
clearing error cod es associated with the

Packet Circuit Pack Audit Test,

for
example, you may also clear errors g enerated from other tests in the testing
sequence.
Maintenance/Test Circuit Pack Query Test (#572)
This test queries the Maintenance/Test packet bus p ort about the state of health
of the packet bus. If the Mai ntenance/Test circuit pack indic ates that the packet
bus has faults, the test fails. The correspond ing failure code d escribes 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 n ot present in any EPN of a
system without duplicated PNC (Critical Reliability). Customers may
Order of Investigation Short Test
Sequence Long Test
Sequence D/ND1
1. D = Destructive; ND = Nondestruc tive
Packet Circuit Pack Audit Test (#573) X X ND
Maintenance/Test Circuit Pack Query Test (#572) X X ND