Siemens MC35 - Manual (Page 115)

AT Command Set
MC35_ATC_01_V03.02 Page 115 of 228 13.03.2002
4.44 AT+CUSD Unstructured supplementary service data
Test command
AT+CUSD=?
Response
+CUSD: (list of supported <n>s) OK
Parameter
See write command
Read command
AT+ CUSD?
Response
TA returns the current <n> value.
+CUSD: <n> OK
If error is related to ME functionality:
+CME ERROR: <err>
Write command
AT+ CUSD=
<n>[,<str>[,<dcs>]]
This command allows control of the Unstructured Supplementary Service
Data (USSD) according to GSM 02.90. Both network and mobile initiated op-
erations are supported. Parameter <n> is used to disable/enable the presen-
tation of an unsolicited result code (USSD response from the network, or net-
work initiated operation) +CUSD:<m>[,<str>,<dcs>] to the TE.
When <str> is given, a mobile initiated USSD string or a response USSD
string to a network initiated operation is sent to the network. The response
USSD string from the network is returned in a subsequent unsolicited +CUSD
result code.
The interaction of this command with other commands based on other GSM
supplementary services is described in the GSM standard.
Parameter
<n> 0 disable the result code presentation in the TA
1 enable the result code presentation in the TA
2 cancel session (not applicable to read command re-
sponse)
<str> string type USSD-string (when <str> parameter is not given, net-
work is not interrogated).
If <dcs> indicates that GSM 03.38 default alphabet is used
ME/TA converts GSM alphabet into current TE character set ac-
cording to rules of GSM 07.05 Annex A.
<dcs> GSM 03.38 Cell Broadcast Data Coding Scheme in integer for-
mat (default 15)
<m> 0 no further user action required (network initiated USSD-
Notify, or no further information needed after mobile initi-
ated operation)
1 further user action required (network initiated USSD-
Request, or further information needed after mobile initi-
ated operation)
2 USSD terminated by network
Response
OK
If error is related to ME functionality:
+CME ERROR: <err>
Reference
GSM 07.07
Note
• For the write command <dcs>=15 is supported only.
• On an unsolicited result code with parameter <m>=1 a '> ' is given for fur-
ther user action. The user action is finished with a <ctrl-Z> or aborted with
<ESC>.