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ANN-BD (Announcement circuit pack)
Issue 1 June 2005 459
140AY loop around test (#210)
This test checks the integrity of the record channel on the Announcement circuit pack
(Announcement Port 1). The main function of the 140AY device is to accept Pulse Code
Modulation (PCM)/Adaptive Differential Pulse Code Modulation (ADPCM) samples and
compress/expand the samples using ADPCM. This test connects a Tone Generator to one port
(Announcement Port 1, the recording port), and a Tone Detector to another port (Announcement
Port 9). A tone is generated by the Tone Generator on the first port and looped through the
140AY device to the second port. The Tone Detector then responds with a tone present/absent
message. The 140AY Loop Around Test is repeated at three different speech compression
rates.
Since this test involves sending a tone through two different ports, the Playback Speech
Memory Array (PSMA) Test (#206) is run on the two ports first to make sure that they are
working properly. See ANN-PT (announcement port)
on page 465 for a description of this test.
Table 136: TEST #210 140AY loop around test
Error
code
Test
result
Description/ Recommendation
1-3 ABRT Response to the test request was not received within the allowable time
period. The error code indicates at which speech compression rate the test
aborted (one being the first rate tested, three being the last).
1. Retry the command at 1-minute intervals a maximum of 5 times.
10 ABRT The PSMA Test (#206) failed on Announcement Port 1.
1. Refer to ANN-PT (announcement port)
on page 465 Maintenance
documentation, Test #206.
90 ABRT The PSMA Test (#206) failed on Announcement Port 9.
1. Refer to ANN-PT (announcement port)
on page 465 Maintenance
documentation, Test #206.
1000 ABRT System resources required to run this test are not available. This test needs
Announcement Ports 1 and 9 to run. One of the ports may be in use on a
valid call.
1. Retry the command at 1-minute intervals a maximum of 5 times.
2. If the test continues to abort and Ports 1 and 9 are not in use, escalate
the problem.
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