Trouble locating and clearing procedures (continued) 1-343
DMS-100 Family NA100 Trouble Locating and Clearing Procedures Volume 2 of 2 LET0015 and up
Running a C7BERT for high-speed links
Application
Use this procedure to do the following:
•
perform local or remote loopback on an NTEX78AA card for LIUBASIC
•
perform far-end DS-1 ESF loopback (CARLOOP)
•
inject bit errors during HSL C7BERT
•
run the CCS7 bit-error rate test for high-speed links (HSL C7BERT)
Note: Do not use CARLOOP loopback test for HSLs connected to an
asynchronous transfer mode (ATM) switch. CARLOOP test for HSLs is
only valid over a direct connection.
Definition
Bit error rate testing measures the quality of a CCS7 digital transmission path.
Run an HSL C7BERT in the following situations:
•
before bringing a CCS7 high-speed signaling link into service
•
when isolating faults
Common procedures
None
Action
This procedure contains a summary flowchart and a list of steps. Use the
flowchart as a summary of the procedure. Follow the steps to perform the
procedure.