Nortel Meridian 1 Administration And Maintenance page 365

Symptoms
Calls cannot be placed or
received on some DSLs
on a particular line card.
Problems with features
on ISDN BRI terminals.
User reports problems
with calls on specific type
terminals.
Chapter 8 — Service changes and maintenance
Diagnosis
The DSLs incorrectly
configured, not
configured, or disabled.
Signaling link between
the MISP and the SILCs
or UILCs is faulty.
ISDN BRI terminal faulty
or incorrectly configured.
DSL wiring faulty.
Incorrect DSL and/or
TSP configuration for the
connected ISDN BRI
terminals.
Mismatch between the
DSL configuration and
the terminal type
connected to the DSL, a
faulty terminal, or a faulty
connection to the DSL.
Option 11C
Solution
Go to Procedure 8-7 of S ILC or UILC
fault isolation and correction in this
chapter to check the status of each
DSL.
Go to Procedure 8-3 Performing MISP
loopback tests in this chapter to check
the signaling link between the MISP
and the SILCs and/or UILCs.
Check the ISDN BRI terminal user
manual to determine if the terminal is
operating correctly.
Check the DSL wiring.
Use the configuration procedures in
the Administration section of this
manual to verify the DSL and the TSP
configuration parameters.
Go to Procedure 8-7 of S ILC or UILC
fault isolation and correction in this
chapter to check the status of each
DSL.
Check DSL wiring between the main
frame connection and the terminal.
Wiring includes building cabling,
mounting cords and wall jacks.
Check the ISDN BRI terminal user
manual to determine if the terminal is
operating correctly and is configured
correctly.
ISDN BRI Administration and Maintenance
Page 351 of 492