l If the fault persists, proceed to Step 6.
Step 6 Check whether DDF and MA5612 grounding complies with the local standard. Call each other
again to check whether the fault is rectified.
l If the fault is rectified, go to Step 13.
l If the fault persists, proceed to Step 7.
Step 7 Run the pots loop-line-test command to perform a loop-line test for the board where a fault
occurs.
l If the test result is normal, it indicates that the external line and the phone are faulty. Then,
go to Step 9.
l If the test result is that the MA5612 is not connected to a phone, it indicates that the phone
is faulty or the cable between the phone and the MA5612 is not properly connected. In this
case, replace the phone and make sure that the cable between the phone and the MA5612
is properly connected. Then, proceed to Step 8.
l If the test result is others such as line B grounding, it indicates that external lines are faulty.
In this case, troubleshoot the fault according to the prompt message. For example, if the
test result is line B grounding, it indicates that line B may be damaged. In this case, replace
the line B, and then proceed to Step 8.
NOTE
The qualitative loop-line test conclusions include: normal, touch the power line, line A mixed with other lines,
line B mixed with other lines, lines A and B mixed with other lines, line A grounding, line B grounding, lines
A and B grounding, self-mixing (small resistance and self-touch wire), A-B insulation difference, line A leakage,
line B leakage, lines A and B leakage, phone set not connected, offhook, and unknown.
Step 8 Call each other again to check whether the fault is rectified.
l If the fault is rectified, go to Step 13.
l If the fault persists, proceed to Step 9.
Step 9 Check the voice board for the subscriber who encounters the fault. Call each other again to check
whether the fault is rectified.
l If the fault is rectified, go to Step 13.
l If the fault persists, proceed to Step 10.
Step 10 Check the environment for the MA5612, and external lines to troubleshoot electrical interference
of the broadcast tower and high voltage cables. Call each other again to check whether the fault
is rectified.
l If the fault is rectified, go to Step 13.
l If the fault persists, proceed to Step 11.
Step 11 Check configurations related to numbers of the softswitch and voice gateway. Compare the
configurations of the faulty numbers with those of the normal numbers and modify the
configurations of the faulty numbers to be the same as those of the normal numbers. Call each
other again to check whether the fault is rectified.
l If the fault is rectified, go to Step 13.
l If the fault persists, proceed to Step 12.
Step 12 Record the results of the preceding steps in a fault report (see Fault Report Form), fill out the
entire form, and then submit it to Huawei for technical support (see Contacting Huawei for
Assistance).
SmartAX MA5612 Multi-service Access Module
Maintenance Guide
5 Troubleshooting Services Transmitted Through a GPON
Port
Issue 01 (2012-07-25) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
187
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