Westermo GDW-11 - Manual (Page 132)

132 Supplementary Services commands 6615-2220
The data coding scheme received (GSM TS 03.38).
Syntax To send and receive USSD:
AT+CUSD= [, [,]]
NOTE:
Please, be aware that the send USSD command needs the user to re-enter the
parameter!
Parameters to send and receive USSD:
Is the USSD string to be sent.
The default alphabet and the UCS2 alphabet are supported.
NOTE:
1) When the product sends a USSD, an OK response is first returned, and the intermedi-
ate +CUSD indication comes subsequently.
2) In case of error, a “+CUSD:4” indication is returned.