Step 3 Check whether the fault is rectified.
l If the fault is rectified, go to Step 15.
l If the fault persists, go to Step 4.
Step 4 Perform a 8.3 POTS Subscriber Circuit Line Test with the phone on the hook.
l If the results of all test items are normal, the voice service board is normal. Then, go to
Step 7.
l If the results of all test items are not normal, the voice service board is faulty. Then, go to
Step 5.
Step 5 Perform the test on another port on the same board.
l If the fault is rectified, go to Step 15.
l If the fault persists, go to Step 6.
Step 6 Replacing the service board to test whether the fault is rectified.
l If the fault is rectified, go to Step 15.
l If the fault persists, go to Step 7.
Step 7 In pstnport mode, run the display pstnport electric command to query the electrical attributes
of the PSTN port. Check whether the impedance type, current type, transmit gain, and receive
gain of the affected port are the same as those of a normal port.
l If the electrical attributes of the PSTN port are the same as those of a normal port, go to
Step 9.
l If they are different, run the pstnport electric set command to reconfigure the electrical
attributes of the PSTN port to ensure that they are the same as the attributes of a normal
port. Then, go to Step 8.
NOTE
Users can run the pstnport electric batset command to configure electrical attributes of multiple PSTN
ports in batches.
Different countries and regions require different electrical attributes. Therefore, ensure that the configured
electrical attributes comply with local standards and interconnected devices use the same electrical
attributes.
Step 8 Check whether the fault is rectified.
l If the fault is rectified, go to Step 15.
l If the fault persists, go to Step 9.
Step 9 In ESL user mode, run the display mgpstnuser attribute command to query the PSTN user
attributes and check whether the input and output gains of the DSP chip used on the affected
port are the same as those used on a normal port.
l If they are the same, go to Step 11.
l If they are different, run the mgpstnuser attribute set frameid/slotid/portid dsp-input-
gain dsp-input-gain-value dsp-output-gain dsp-output-gain-value command to
reconfigure the PSTN user attributes of the port to ensure that the attributes are the same
as those of a normal port. Then, go to Step 10.
Step 10 Check whether the fault is rectified.
l If the fault is rectified, go to Step 15.
l If the fault persists, go to Step 11.
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.
102
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