Chapter 3: AT Commands Reference
April 15, 2008 G24-L AT Commands Reference Manual 3-53
+CUSD, Unstructured Supplementary Service Data
This command allows control of Unstructured Supplementary Service Data (USSD), according to
GSM 02.90. Mobile-initiated operations are supported.
The following table shows the +CUSD parameters.
Command
Type
Syntax Response/Action Remarks
Set
+CUSD=<n>[,<str>] OK
+CME ERROR: <err>
The Set command enables/disables the
display of the following unsolicited
result code, +CUSD: <m>[,<str>] (the
USSD response from the network), to
the TE. The new value is not retained
after a power cycle.
Read
+CUSD? +CUSD: <n>
+CME ERROR: <err>
The Read command displays the
current value of <n>.
Test
+CUSD=? +CUSD: (list of
supported <n>s)
+CME ERROR: <err>
The Test command displays the
supported values of <n>.
Table 3-29: +CUSD Parameters
<Parameter> Description
<n> Sets/displays the result code presentation status of the G24-L.
0 Disable (default)
1 Enable
2 Cancel session
<str> A USSD string that, when included, causes a mobile-initiated USSD string or
response USSD string to be sent to the network. The response USSD string is returned
in a subsequent unsolicited +CUSD result code.
<str> starts with either "*" or "#". The maximum length is 200 characters, based on
+CSCS.
When <str> is not included, the network is not queried.
<m> Whether further user action is required.
0 No further user action required (either network-initiated USSD-Notify, or no
further information needed after a mobile-initiated operation)
1 Further user action required (either network-initiated USSD-Request, or
further information needed after a mobile-initiated operation
2 USSD terminated by the network (the reason for the termination is indicated
by the index, as described in Table Note:)
3 Other local client has responded
4 Operation not supported
5 Network time out
