Chapter 7. Test Menu

SES

The number of seconds with more than 320 bit errors.

*SYNC

Indicates if pattern sync is (YES) or is not (NO) valid. The asterisk (*) indicates if pattern sync has been lost since the start of testing.

Clear results by pressing C. The results are accumulated until the test pattern is set to NONE or CLEARED.

Using TST DS0s for testing can be very useful, particu- larly in Fractional T1 applications.

How to Run an End-to-End Test on Fractional DS0s

Step

Action

1Set the TST for Map B in the same DS0 as used by Map A to receive data from an Nx56/64 port.

2Loop the far end using a V.54 loopback code on the Nx56/64 port.

A single DS0 can be used for continuous testing while other DS0s are passing normal data. This will also provide an end-to-end check on the entire link. Set each end to send QRSS in TST DS0s (using 1 DS0) and occasionally view the results on the Pattern Result menu selection.

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ADTRAN TDU 120e user manual Sync, How to Run an End-to-End Test on Fractional DS0s Step Action