Misp Fault Isolation And Correction - Nortel Communication Server 1000 Manual

Symptoms
Problems with features on
ISDN BRI terminals.
User reports problems
with calls on specific type
terminals.

MISP fault isolation and correction

The MISP provides a communication interface between the CPU and the
peripheral devices. It communicates with the CPU over the CPU bus. It
communicates with the BRSCs, the SILCs, and the UILCs over the Network
bus. Both buses are located on the Network module backplane. It uses one
network loop to interface with the BRSCs, the SILCs, and the UILCs.
The MISP processes the signaling information received on the D-channels
from the DSLs. If a BRSC is not used, the MISP also separates packet
data from signaling information and forwards it to the packet handler on
the D-channels.
Problems with the MISP may be caused by hardware faults, incorrect
configuration, disabled MISP, or continuity problems between the MISP and
other network cards connected to the network bus. To isolate and correct
the MISP-related problems, use the following procedures.
Check MISP status
To isolate and correct the MISP-related problems, follow the procedures
below.
Copyright © 2003-2007, Nortel Networks
.
Diagnosis
Incorrect DSL and/or
Terminal Service Profile
(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.
Note: Throughout this section, on a Small System or CS 1000S system,
lll (loop) should be interpreted as c (card). Similarly, all references to
network loops or loop numbers should be interpreted as cards or card
slot numbers.
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
MISP fault isolation and correction 17
Solution
Verify the DSL and the TSP
parameters, with the configuration
procedures found in the ISDN
Basic Rate Interface Installation and
Commissioning (NN43001-318).
Go to "SILC or UILC fault isolation
and correction" (page 39)
BRSC self-test" (page
the status of each DSL.
Check the DSL wiring.
Check the ISDN BRI terminal user
manual to determine if the terminal is
operating correctly and is configured
correctly.
Nortel Networks Confidential
or "Perform
35). to check