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
If the service is restored, go to
l
If the service is not restored, go to
.
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
Step 12
End.
----End
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.
Check whether the H.248 interface is normal.
2.
Check whether the configuration of the device is the same as the configuration of the
softswitch.
3.
Check whether the IUA link is normal.
4.
Check whether the configuration of the PRA users is correct.
5.
Check whether the board connecting the PRA users is normal.
6.
Check whether the physical line is faulty.
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
shutdown
command on the MA5612 to shut down the MG interface.
l
If the MG interface is in
Remote Closed
state, it indicates that the operator issues the
shutdown command on the softswitch to the MG interface.
l
If the MG interface is in
Wait ack
state, it indicates that the MG interface is registering with
the media gateway controller (MGC).
l
If the MG interface is in
Graceful Closed
state, it indicates that the MG interface is shut
down gracefully.
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.
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.
109
