H.248-Based Isdn Pra Service Troubleshooting - Huawei SmartAX MA5612 Maintenance Manual

SmartAX MA5612 Multi-service Access Module
Maintenance Guide
Step 10 Run the dsp attribute command on the MA5612 to change the static initial jitter buffer value
(the normal-fixed-jb parameter) of the DSP channel to double the packetization duration. (The
packetization duration can be queried on the MGC.) Then, check whether the service is restored.
l
l
Step 11 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
Assistance).
Step 12 End.
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4.5 H.248-Based ISDN PRA Service Troubleshooting

The primary rate adaptation (PRA) is used to access the ISDN users to the media gateway (MG)
through the ISDN primary rate interface (PRI) based on the H.248 protocol. This topic describes
how to troubleshoot the fault of the H.248-based ISDN PRA service.
Location Method
When the H.248-based ISDN PRA service is faulty, locate the fault according to the following
procedure:
1.
2.
3.
4.
5.
6.
Procedure
Step 1 Run the display if-h248 state command to query the status of the MG interface.
l If the MG interface is in Normal state, it indicates that the MG interface is normal.
l If the MG interface is in Local Closed state, it indicates that the operator runs the
l If the MG interface is in Remote Closed state, it indicates that the operator issues the
l If the MG interface is in Wait ack state, it indicates that the MG interface is registering with
l If the MG interface is in Graceful Closed state, it indicates that the MG interface is shut
Step 2 Run the display if-h248 attribute command to check the attributes of the MG interface.
Contact the engineer on the softswitch side to check and ensure that the attributes of the MG
interface are the same as the attributes of the softswitch.
Issue 01 (2012-07-25)
If the service is restored, go to
If the service is not restored, go to
Check whether the H.248 interface is normal.
Check whether the configuration of the device is the same as the configuration of the
softswitch.
Check whether the IUA link is normal.
Check whether the configuration of the PRA users is correct.
Check whether the board connecting the PRA users is normal.
Check whether the physical line is faulty.
shutdown command on the MA5612 to shut down the MG interface.
shutdown command on the softswitch to the MG interface.
the media gateway controller (MGC).
down gracefully.
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4 Troubleshooting Services Transmitted Through a GE Port
Step 12.
Step 11.
Contacting Huawei for
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