Brsc Fault Isolation And Correction - Nortel Communication Server 1000 Manual

32 Isolate and correct faults
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BRSC fault isolation and correction

The BRSC processes the signaling information received on the D-channels
from the DSLs. It sends the resulting network messages to an MISP by
means of a single channel. The BRSC also filters out D-channel Packet
Switched Data (DPSD) from the line cards, and it routes this information to
an internal or external packet handler.
Problems with the BRSC may be caused by hardware faults, incorrect
configuration, disabled BRSC or MISP, or continuity problems between the
MISP and other network cards connected to the network bus.
Copyright © 2003-2007, Nortel Networks
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Put the far-end ISDN BRI trunk DSL in the remote loopback mode
by entering the ENRB L S C D command and pressing the ENTER
key.
Run the remote loopback test by entering the RLBT L S C D
command and pressing the ENTER key.
The result of the test is displayed as follows:
DSL: L S C / C
TEST: PASS
TEST: FAIL - NO DATA RCV FAR END
TEST: FAIL - CORPT DATA RCV FAR END
TEST: FAIL - REASON UNKNOWN
If the test failed because no data or corrupt data was received from
the far end, verify that proper test data is being used; if the test failed
for unknown reasons, make sure that the ISDN BRI trunk DSL has
been properly configured for the ISDN BRI trunk application and
perform the test again.
Take the far-end ISDN BRI trunk DSL out of remote loopback mode
by entering the DSRB L S C D command and pressing the ENTER
key. The the far-end and near-end ISDN BRI trunk DSLs are placed
in the test mode.
Take the far-end and near-end ISDN BRI trunk DSLs out of test
mode by entering the DSTS L S C D command, and pressing the
ENTER key. The ISDN BRI trunk DSLs are reset in their release or
established state.
Enable the ISDN BRI trunk DSL by entering the ENLU command.
Note: The BRSC is not supported on Small Systems and CS 1000S
systems.
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
RLB TEST
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