Maintenance-Object Repair Procedures
555-233-143
8-550 Issue 1 May 2002
Digital Line NPE Crosstalk Test (#9)
The NPE Crosstalk test verifies that this port’s NPE channel talks on the selected
time slot and never crosses over to time slots reserved for other connections. If
the NPE is not working correctly, one-way and noisy connections may be
observed. This test is part of a port’s Long Test Sequence and takes about 20 to
30 seconds to complete.
1015 ABORT The station is not busied out (busyout station).
16 FAIL The secondary channel is not operating properly. User impact may range from
noticing nothing to not being able to use this terminal.
1. Check the results of Voice and Control Channel Local Loop test (#13).
2. If that test fails, suspect the Digital Line circuit pack. If that test passes
then replace the terminal.
3. If both test fail, and component replacement does not change the results,
then:
a. Run circuit pack tests to check the tone generator circuit and the Tone
Detector circuit pack using test board UUCSS.
b. Resolve any problems that are detected on the Tone Generator circuit
or Tone Detector circuit.
PASS Voice and Control Channel Local Loop test passed. All channels are
transmitting properly.
1. To verify that this is not an intermittent problem, repeat this test up to ten
times.
2. If complaints persist (noisy connections for voice. corrupted data transfer
for data), examine the station, connections, and wiring.
Table 8-220. Test #1201 Digital Terminal Remote Loop-around Test — Continued
Error
Code
Tes t
Result Description / Recommendation
Continued on next page
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