1-404 Trouble locating and clearing procedures (continued)
297-8021-544 Standard 14.02 May 2001
Test the DS-1 carrier states
(continued)
Test the DS-1 carrier states
At the MAP display
1
Monitor the DS-1 carrier states at the C7BERT level. If the transmit (Tx) and
receive (Rx) cables connect correctly to the DS-1 paddle board at the local
and remote end, the carrier state for both cards should be InSv.
2
Pull the Tx cable at the local end and check the carrier states.
3
Pull the Rx cable at the local end and check the carrier states.
4
Plug in the Rx and Tx cables and pull out the Tx cable at the outgoing channel
bank at the local end. Check the carrier states.
If the carrier states are
Do
InSv
at the local end
and
InSv
at the remote end
step 2
anything else
step 7
If the carrier states are
Do
RAI
at the local end
and
LOS
at the remote end
step 3
anything else
step 7
If the carrier states are
Do
LOS
at the local end
and
LOS
at the remote end
step 4
anything else
step 7
If the carrier states are
Do
RAI
or any other alarm indicator
for the local end
and
LCD
at the remote end
step 5
anything else
step 7
