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At+cusd unstructured supplementary service data, 44 at+cusd unstructured supplementary service data – Siemens MC35 User Manual

Page 115

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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 s) OK

Parameter

See write command

Read command

AT+ CUSD?

Response

TA returns the current value.
+CUSD: OK
If error is related to ME functionality:
+CME ERROR:

Write command

AT+ CUSD=
[,[,]]

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 is used to disable/enable the presen-
tation of an unsolicited result code (USSD response from the network, or net-
work initiated operation) +CUSD:[,,] to the TE.
When 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

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)

string type USSD-string (when parameter is not given, net-
work is not interrogated).
If 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.

GSM 03.38 Cell Broadcast Data Coding Scheme in integer for-
mat (default 15)

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:

Reference

GSM 07.07

Note

• For the write command =15 is supported only.

• On an unsolicited result code with parameter =1 a '> ' is given for fur-

ther user action. The user action is finished with a or aborted with
.