Check whether the phone is working
properly
Start
Check whether the loop and circuit
lines are normal
End
Check whether the service board to
which the affected user is connected
is working properly
Check whether the voice gain of the
PSTN port is set to a very
small value
Check whether the output gain of the
DSP chip is set to a very
small value
Check whether the power board is
working properly
Check whether the hardware and the
ambient environment are normal
CAUTION
To facilitate fault report, save the results of the following steps.
Procedure
Step 1 Replace the phone with another. Then, check whether the service is restored.
l If the service is restored, go to Step 15.
l If the service is not restored, go to Step 2.
Step 2 Perform a 8.4 POTS Subscriber Loop Line Test with the phone on the hook.
l If the test result (shown in Conclusion) is Normal, the subscriber line is normal. Then, go
to Step 4.
l If the test result (shown in Conclusion) is not Normal, rectify the fault based on the test
result. Then, go to Step 3.
NOTE
When you rectify the fault based on the test result, the phone is faulty or the line between the phone and
the MA5612 is not properly connected if the test result shown in Conclusion is AB all break off or no
phone connected. In this case, replace the phone or check whether the line is connected properly.
SmartAX MA5612 Multi-service Access Module
Maintenance Guide 4 Troubleshooting Services Transmitted Through a GE Port
Issue 01 (2012-07-25) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
101
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