Zhone Technologies Z-PLEX-10-24-DOC-SC BER testing, Activating a BER test for an entire T1 line

Diagnostics BER testing

5.2BER testing

The bit error rate (BER) test sends a data pattern and measures the bit error rate on the selected interface. The Z-Plex supports BER tests on entire T1 lines or on individual time slots. The BER test supports the following BER test patterns:

•Quasi-random signal source (QRSS)

•ALT (10101010)

•2047

During a BER test, all connections between either the data ports or the FXS/FXO ports and the T1 interface are broken and a test pattern is transmitted onto the T1 interface. During the test, the WAN LED blinks green.

5.2.1Activating a BER test for an entire T1 line

To configure a BER test on an entire T1 line, enter the following command:

user> SET T1CFG:BERT:x:(QRSS/ALT/2047)

where x is the number of the T1 interface to loopback. To end the BER test, enter the following command:

user> SET T1CFG:BERT:x:OFF

While the BER test is active, you can insert random BIT errors into the test data stream using the following command:

user> SET T1BE:ERRINS:x:BIT

5.2.2Activating a BER test for individual time slots

To configure a BER test on single T1 timeslot:

1.Specify the BER test pattern for the test:

user> SET T1CFG:BERT:x:(QRSS/ALT/2047)

where x is the number of the T1 interface to apply the pattern to.

2.Activate the BER test:

user> SET T1CFG:TSBERTON:x:(1-24)

3.To de-activate the BER test:

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