Step 3a: channel internal loop-around test, Step 3b: modem loop-around test – AT&T AUDIX Networking 585-300-903 User Manual

Page 207

AUDIX Network Testing

14-25

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Step 3: Performing Channel or Modem Loop-Around Tests

If the appropriate tests in step one and step two fail, perform the appropriate test:

•

Channel internal loop-around test

•

Modem loop-around test

Step 3A: Channel Internal Loop-Around Test

This test is used to verify the operation of an individual channel on the ACC or ACCE board. No
connection (that is, no call) is needed for this test.

1. Go to the

maintenance : network

form.

2. Set select test to

3. Go

to channel and enter

1, 2, 3,

. Press

CHANGE or RUN

. Wait for the result. If the test is

not successful, check the

system : log

and/or go to Flowcharts For Troubleshooting the

Network.

NOTE

Use the modem loop-around test (test 6) for channel 5 or 6.

Step 3B: Modem Loop-Around Test

This test is only for modems connected to the RS-232 channels (that is, channel 5 or channel 6). It will test
the loop to the modem and back. No action is required at the modem for this test.

1. If you are not using a MICROCOM QX 3296/C modem, go to step 2. If you are testing a

MICROCOM QX 3296/C modem, you must first go to the

system : translation :

network port

form. Record the three data rate fields and the modem initialization string field

for the channel to be tested. These values will be restored once the test is completed. Now change
the data rate fields to

2400

and change the modem initialization string field to

AT\n0

. Press

CHANGE or RUN

2. Go to the

maintenance : network

form. Set select test to

. Set channel to

. Press

CHANGE or RUN

. Wait for the result. If the test is not successful, check the

system : log

and/or

go to Flowcharts For Troubleshooting the Network.

3. If you are testing a 3296/C, go back to the

system : translation : network port

and

restore the original translations.