Test The Ds-1 Carrier States - Nortel North American DMS-100 Instruction Manual

1-402 Trouble locating and clearing procedures (continued)

Test the DS-1 carrier states

Application
Use this procedure to test the DS-1 carrier states during the Common Channel
Signaling 7 (CCS7) bit error rate test (C7BERT) for high-speed links (HSL).
Perform this procedure when you run C7BERT.
Definition
Test the DS-1 carrier transmit and receive ports on the HSL DS-1 paddle board
(NTEX78AA) to check the carrier states at the local and remote office.
The DS-1 carrier can be in one of the following states:
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Common procedures
None
Action
This procedure contains a summary flowchart and a list of specific steps. Use
the flowchart as an overview of the procedure. Follow the specific steps to
perform the procedure.
297-8021-544 Standard 14.02 May 2001
InSv (in service), which indicates that the carrier is not broken, the framing
of the signal is correct, and the DS-1 cards receive idle asynchronous
transfer mode (ATM) cells
LOS (loss of signal), which indicates that the cards do not receive the DS-1
carrier signal
LOF (loss of framing), which indicates that the cards receive the DS-1
carrier signal, but the framing of the signal is corrupted
LCD (loss of cell delineation), which indicates that the DS-1 cards do not
receive any ATM cells
AIS (alarm indication signal), which indicates that a DS-1 carrier failure
occured
RAI (remote alarm indication), which indicates that a DS-1 carrier failure
occured
OOS (out of service), which indicates that a DS-1 carrier is not in service
because of peripheral module (PM) failure or because the PM is not
configured to bring the carrier into service