1-402 Trouble locating and clearing procedures (continued)
297-8021-544 Standard 14.02 May 2001
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:
•
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
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.