Avaya Definity SI - Page 1990

Maintenance Object Repair Procedures
555-233-123
10-1204 Issue 4 May 2002
far-end terminal adapter. For example, if they do not respond to a Remote Layer 3
Query (see Test #260 for ISDN-PRI Signaling Link Port), the associated PRI
Endpoint Port B-channels are placed into the Maintenance/Far-End service state.
A PRI Endpoint Port is a port on a UDS1 interface circuit pack. Therefore, this port
depends on the health of the UDS1 interface circuit pack for proper operation (see
Figure 10-80). As noted earlier, a PRI Endpoint Port B-channel also depends on
an ISDN-PRI Signaling Link Port D-channel (ISDN-LNK) to carry the signaling
traffic. If there is a problem with the ISDN-PRI Signaling Link Port, the PRI
Endpoint Port is affected. The ISDN-PRI Signaling Link Port, in turn, depends on
the PI-LINK (Processor Interface Link). Processor Interface Link problems affect
the ISDN-PRI Signaling Link Port. Keep this hierarchy of dependencies in mind
when diagnosing problems.
Figure 10-80. PRI Endpoint Port Interactions [INTEL]
PRI Endpoint Port Service States
This section defines the possible service states of a PRI Endpoint Port, and it
explains the reason for each service state. This section also provides the
recommended recovery procedures (when required).
DATA
PE-BCHL
PE-BCHL
ISDN-LNK
(PORT 24)
SIGNALING
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TERMINAL
ADAPTER
UDS1
INTERFACE
CIRCUIT
PACK
(TN464C)
PROCESSOR
(TN773)
PI
CIRCUIT
PACK
(TN765)
TDM
BUS
(PORT 23)
(PORT 1)
DATA