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Running the Local Channel Loopback Test
Specify the rate at which you want
the test to run
Run the local channel loopback
test
Check the audio cable from the electronics module to the
monitor.
Check the cable from the electronics module to the
microphone.
Check the volume on the monitor.
If all cable connections are secured, you may have a hardware
component failure. Run the hardware self-tests described earlier
in this chapter to further isolate the problem.
If the hardware tests pass, there may be a problem with the
network. Choose the
described later in this chapter, to further isolate the problem.
When you choose Local Channel Loopback from the Loopback Tests
menu, you see this menu:
When you run the local channel loopback test, the audio and video
signals from your system are displayed and sounded on your local
monitor after being looped through the codec, the H.320
multiplexer, and up to the network interface board at the rate you
specify. This test veriÞes the operation of the near-end components
and cables, the codec, and the H.320 multiplexer.
If you receive errors when you run this test, but not when you run
the local audio/video loopback test, you may have a problem with
the codec.
Note: You do not need to place a call to run this test.
Run Network Reflector Loopback
Running Loopback Tests
test,
7-15
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