VAL-PT (Voice Announcements over LAN Packet/Port)
Issue 1 May 2002
8-1841555-233-143
System Technician-Demanded Tests:
Descriptions and Error Codes
Investigate errors in the order they appear in the table below.
TDM Loop-Around Test (#1285)
This test is destructive.
This test verifies whether the VAL port can send and receive data on the TDM
bus. This test has a tone generator send tones on a timeslot, and it has a tone
receiver receive tones on another timeslot. The tones are looped through the
record/playback port.
Test failure indicates failure of one or more of the following components:
■ VAL (TN2501) circuit pack
■ TDM bus
■ Tone generator / tone receiver circuit pack
Table 8-703. System Technician-Demanded Tests: VAL-PT
Order of Investigation
Short Test
Sequence
Long Test
Sequence D/ND
1
1. D = Destructive, ND = Non-destructive
TDM Loop-Around test (#1285) X D
SCOTCH Synchronous Loop-Around test (#1275) X D
If the received tones: Then:
Match the tones sent The test passes.
Do not match the tones sent The test fails.
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