Test: cpe-loopback-jack

Pattern 3-in-24

The loopback jack test is active.

Synchronized

Y or N

• If the system displays y, the DS1 medial module has synchronized to the looped 3-in-24 pattern and is accumulating a count of the bit errors detected in the pattern until the test has ended.

• If the system displays n, retry the test five times by ending the test (Step 11) and re-starting the test (Step 4).

• If the media module never synchronizes, substantial bit errors in the 3-in-24 pattern are likely. This could be intermittent connections or a broken wire in a receive or transmit pair in the CPE wiring.

Bit Error Count

Cumulative count of detected errors

If there are no wiring problems, the counter remains at 0.

Note that ESF error events counter and the ESF performance counter summaries (errored seconds, bursty errored seconds, and so forth) will also increment. These counters are not used with the loopback jack tests. However, they will increment if errors are occurring. Counters should be cleared following the test.