Specifications

AT Command Set Reference
Ver. 1.00
GSM1308AT001 Page 60 Ver. 1.00 – 10/29/2008
2.1.3.13. AT+CUSD Unstructured Supplementary Service
Command Function This command allows control of the
Unstructured Supplementary Service Data
(USSD)]. Both network and mobile initiated
operations are supported. Parameter <n>
is used to disable/enable the presentation
of an unsolicited result code (network
initiated operation) to the TE.
Command Functional Supplementary Services
Group
Command Format Query AT+CUSD=?
Response +CUSD: (0, 1, 2)
OK
Write Format +CUSD=[<n>[,<str>[,<dcs>]]]
Response OK
Read Format AT+CUSD?
Response +CUSD: 0
OK
Execution Format N/A
Response N/A
Parameter Values
<n> 0 disable the result code
presentation
1 enable the result code presentation
2 cancel session
(when <str> parameter is not given,
network is not interrogated)
<str> actual USSD string in “quotes”
<dcs> language parameter see GSM 03.38
- Default 15 (Language unspecified)
Reference GSM Ref. 07.07 Chapter 7.14
GSM Ref. 03.38 Chapter 5