Network Initiated Ussd Operation; Reference Process; Troubleshooting - Huawei MU609 Application Manual

HUAWEI MU609 HSPA LGA Module
Application Guide

15.4 Network Initiated USSD Operation

15.4.1 Reference Process

Command
+CUSD: 1,
"7076393C2F83D26E789D0E0ABB41697
AB90D9287DDE732C82C7FB7413010FD
0DCA01"
AT+CUSD=1,"31",15
OK
+CUSD:0,"CF6508",15
Note:

15.4.2 Troubleshooting

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