Nortel Communication Server 1000 Fundamentals page 97

1 Configure all mini- carrier links by executing the S C (Set
Configuration) command. Any unused mini-carrier links must
be configured as "unequipped" to prevent the mini-carrier alarm
LED from being constantly ON. Default parameters should not
be changed without good reason. Execute the D C (Display
Configuration) command to verify the configuration.
2 Identify the circuit ID for carrier 0 at the T1 network demarcation
point and connect the corresponding patch cable to the I/O cable
connector (8-pin modular jack) for carrier 0.
3 Observe the mini-carrier alarm LEDs on the faceplate of the RMI.
Initially, mini-carrier alarm LEDs for all equipped mini-carrier
links should be ON due to Loss-of-Signal. The LED for carrier 0
should be turned OFF approximately 10 seconds after the patch
cable for the selected carrier 0 is plugged into the RMI I/O cable
connector for carrier 0.
If a good quality signal is received by both the RMI and the LMI
on carrier 0, the link is installed in the appropriate I/O cable
connectors at both ends. If the connection is mismatched (carrier
0 at one end connects to carrier 1 at the other end), the alarm
LED will remain ON.
The LED also remains ON if there is a carrier alarm on the RMI
(near-end), however, the LED is turned OFF if there is no carrier
alarm on the RMI (near-end) and communication cannot be
established across the link due to an alarm on the LMI (distant
end).
Distant-end carrier alarms cause the near-end LED to turn ON
only if the RMI and LMI can communicate.
4 Test the carrier 0 link by executing the mini-carrier status
commands (D S — display mini-carrier status and D S D —
display mini-carrier status distant) using the MMI terminal.
Compare the mini-carrier status on both the RMI (near-end) and
the LMI (distant-end). Refer to "Configuring the carriers," on
page 76 to see the displays of these two MMI commands. There
are four possible conditions:
•
If the LED for carrier 0 is OFF and the RMI and LMI have
established signaling communication, both ends will show
"No Alarm" for carrier 0 and "Loss of Signal" for carrier 1.
There is no mismatch.
•
If the LED for carrier 0 stays ON due to a mismatch, the LMI
(distant-end) will show "Loss of Signal" for carrier 0 and "No
Alarm" for carrier 1.
•
If the LED for carrier 0 stays ON due to a carrier alarm
condition on the RMI (near-end), the D S command will
Nortel Communication Server 1000
Mini-Carrier Remote Fundamentals
NN43001-557 04.01 4 June 2010
Copyright © 2003-2010 Nortel Networks. All Rights Reserved.
Verifying mini-carrier links at the remote site 97