Westermo GDW-11 - Manual (Page 131)

Supplementary Services commands 131 6615-2220
+CUSD – Unstructured supplementary service data
Description:
The USSD supplementary service is described in GSM-02.90.
It is based on sequences of digits which may be entered by a mobile user with a handset.
A sequence entered is sent to the network which replies with an alphanumerical string,
for display only, or for display plus request for the next sequence.
This command is used to:
• Enable or disable the CUSD indication sent to the application by the product when
an incoming USSD is received
• Send and receive USSD strings
Syntax:
AT+CUSD = <n> [ ,<str> [ <dcs> ] ]
NOTE:
In case of enabled presentation, a +CUSD (as direct answer to a send USSD) is then
indicated with:
+CUSD: <m> [,<str>,<dcs> ]
Parameters:
<n>
0: Disable the result code presentation
1: Enable the result code presentation
2: Cancel session (not applicable to read command response)
<m>
0: no further user action required (network initiated USSD-Notify, or no further infor-
mation needed after mobile initiated operation)
1: further user action required (network initiated USSD-Request, or further informa-
tion needed after mobile initiated operation)
2: USSD terminated by network
4: Operation not supported
<str>
Network string (name), converted in the selected character set