HUAWEI ME909u-523 LTE LGA Module
Application Guide
ECM Application Scenarios
Issue 04 (2014-12-08)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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3. Host application also can send AT command AT^NDISSTATQRY? to query the
current ECM connection state, and determine to update or disable the ECM by
the dhcp client.
4.1.2
Troubleshooting
Scenario
Possible Error
Information
Solution
AT^NDISDUP=1,1,"1234"
+CME ERROR: SIM
failure
No SIM card is
detected. Insert a SIM
card.
AT^NDISDUP=1,1,"4321",
"huaei","huawei",1
OK
^NDISSTAT: 0,33,,"IPV4"
^NDISEND:1,29
NDISEND
indicates the
failure reason during
the dial-up.
29
indicates that the
authenticated
information is not
correct.
AT^NDISDUP=1,1,"abcd"
OK
^NDISSTAT: 0,33,,"IPV4"
^NDISEND:1,33
NDISEND
indicates the
failure reason during
the dial-up.
33
indicates that
request service is not
specified.
In this case, the
network don not
support this APN
"abcd".
4.2 Querying the Dial-up Connection State
4.2.1
Reference Process
Command
Description
AT^NDISSTATQRY?
Query the dial-up connection state.
^NDISSTATQRY: 0,0,,"IPV4"
OK
Report that the connection is not set up.
AT^NDISSTATQRY?
Query the dial-up connection state.
^NDISSTATQRY: 1,,, "IPV4"
OK
Report that the connection is set up.