Troubleshooting; Establishing Data Connections - Huawei MU609 Application Manual

HUAWEI MU609 HSPA LGA Module
Application Guide

4.1.2 Troubleshooting

Scenario
AT+CGATT?

4.2 Establishing Data Connections

Reference process 1:
Command
ATD*99#
CONNECT xxx
Reference process 2:
Command
AT+CGDATA="PPP",1
CONNECT
Issue 02 (2013-09-18)
Possible Error Information
+CGATT: 0
OK
The UE does not obtain any
PS domain services.
Description
*99# is the dial string. This command is usually used
in Windows and only used in the modem port.The
UE switches from command mode to data mode.
After the TE starts the PPP negotiation process, the
UE automatically performs the actions (including PS
domain attaching and PDP activation) required for
establishing data connections.
CONNECT indicates that the data service dial-up
command is being processed by the module. xxx
indicates the data rate, which depends on the
network standard and capability level.
Description
This command is equivalent to ATD*99#. This
command is usually used in the Android Radio
Interface Layer (RIL).
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External Protocol Stack Application Scenarios
Solution
Run AT+CGATT=1 to manually
attach to the PS domain. If
attaching to the PS domain still
fails or time out (refer to 3GPP
TS 24.008 4.7.3), refer to
section 2.3.
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