HUAWEI MU609 HSPA LGA Module
Application Guide
USSD Application Scenarios
Issue 02 (2013-09-18)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
115
15.4 Network Initiated USSD Operation
15.4.1
Reference Process
Command
Description
+CUSD: 1,
"7076393C2F83D26E789D0E0ABB41697
AB90D9287DDE732C82C7FB7413010FD
0DCA01"
USSD request is initiated by network.
One of the digits "0
–9" is required to
be input.
AT+CUSD=1,"31",15
"1" is input to the network.
OK
+CUSD:0,"CF6508",15
The network notifies user that no
response is needed.
Note:
This function must be supported by the network. The request and notification content sent by
the network depends on the manufactories.
15.4.2
Troubleshooting
Scenario
Possible Error
Information
Solution
The PIN is not
authenticated.
+CME ERROR: SIM
PIN required
Enter the correct PIN.
Network has sent USSD
request or notification, yet
which is not unsolicitedly
reported by the module .
None
USSD unsolicited report:
AT+CUSD=1
The module cannot report
USSD request or
notification with non-
GSM7bit code sent by
network (such as UCS2 8bit
code)
None
Set the transmitted mode as
USSD transparent mode:
AT^USSDMODE=1