M/T-ANL (Maintenance/Test Analog Port)
Issue 1 May 2002
8-1151555-233-143
Analog Port Digital Loop-Around Test (#13)
This test is a modification of the Voice and Control Channel Local Loop test used
by Digital Station (DIG-LINE) maintenance. This test does not perform the control
channel and secondary information channel loop around tests as described for
DIG-LINE, as these data paths do not exist for the Maintenance/Test analog port.
The primary information channel is tested by:
1. Looping back the data channel onto the TDM bus
2. Sending a digital count from the Tone-Clock circuit pack and receiving the
same digital count with a general-purpose tone detector
3. Doing a conference test for the primary information channel. This is the
same test as Conference test (#6).
Only one value (Pass, Fail, or Abort) is generated as a result of the two tests. If
either fails or aborts, the sequence is stopped.
Any FAIL The NPE of the tested port was found to be transmitting in error. This will
cause noisy and unreliable connections.
1. If the remaining ports are currently idle (amber LED is off), try to reset the
circuit pack via the busyout board UUCSS, reset board UUCSS, release
board UUCSS command sequence. Then repeat the test.
2. If the test fails again, replace circuit pack.
PASS The port is correctly using its allocated time slots. User-reported troubles on
this port should be investigated by examining station, trunk, or external wiring.
Table 8-472. Test #9 NPE Cross Talk Test — Continued
Error
Code
Tes t
Result Description / Recommendation
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