Installation and configuration
Page 101 of 150
Mini-Carrier Remote
Description, Installation, and Maintenance
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 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 establish
signaling communication, both ends will show “No Alarm” for
carrier 0 and “Loss of Signal” for carrier 1. 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 show the type of carrier
alarm on carrier 0, and the D S D command cannot retrieve the
distant end status.
