Demand test descriptions and error codes - Avaya Support

Figure 53: PRI Endpoint Port Interactions
Terminal
Adapter
ISDN-LNK
PE-BCHL
PE-BCHL
Signaling
(Port 24)
Data
(Port 23)
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
Data
(Port 1)
PRI Endpoint Port Service States
UDS1
Interface
Circuit
Pack
(TN464C)
MSSNET
Circuit
Pack
(UN332)
The status pri-endpoint extension command displays the following possible service
states for PRI endpoint ports. The table that follows gives recommended procedures for each
state. The figure following that shows typical progressions from one service state to another.
Refer also to Troubleshooting ISDN-PRI endpoints (wideband) in Maintenance Procedures for
Avaya Aura Communication Manager, Media Gateways and Servers (03-300432) for a
layered approach to addressing PRI endpoint problems.
● In-Service (INS)
The B-Channel is in its normal operating state.
● Out-of-Service/Far-End (OOS/FE)
A B-Channel is initialized to this state when first administered. The switch then sends
messages to the far-end terminal adapter to negotiate the B channel into service. If the
far-end terminal adapter does not respond to the messages within a certain time period,
the port remains out of service, and maintenance will periodically resend the messages.
The port is unusable for incoming and outgoing calls, although other ports in the PRI
endpoint can still be used.
710 Maintenance Alarms for Communication Manager, Media Gateways and Servers
Packet
Bus
TDM
Bus
PKTINT
Circuit
Pack
(TN1655)
Processor
(UN331)