Huawei MU609 - Module Data Service Disconnected; User Configuration Lost

HUAWEI MU609 HSPA LGA Module
Application Guide
Appendix
Issue 02 (2013-09-18)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
145
If the module goes to dump status, please make sure the power voltage are
recommended in Hardware Guide of the module. And then power off the UE for
several minutes, then power on it again.
19.3.3 Module Data Service Disconnected

Exception Description
In some extreme condition, the data service may be disconnected automatically. The
reason maybe the network signal is not good, or the network is busy, or it is disconnected
by the network.

How to Detect the Exception by the Host
Query the current PDP Activation state:
Run:
AT+CGACT?
Response:
+CGACT: 1,0
OK
For details, please refer to the latest version of MU609 V100R002 of HUAWEI
MU609 HSPA LGA Module AT Command Interface Specification..

Host Resume Steps
In this condition, the host need reconnect the network.

Host Resume Example
For data service reconnected by internal protocol stack
Step 1
Run:
AT^IPINIT="1234"
Response:
OK
Step 2
Run:
AT^IPOPEN=1,"TCP","172.22.44.33",5000,5500
Response:
OK
For details, please refer to Chapter 5 Internal Protocol Stack Application Scenarios.
19.3.4 User Configuration Lost

Exception Description
In some extreme condition, the user configuration maybe lose after reset for several
times..

How to Detect the Exception by the Host