Sony Ericsson TT4031 (SE-GM29) - Manual (Page 245)

Owner’s Manual Rev 1.0 Page 245 of 245
The maximum length is fixed.
<SS_return> Description
Integer type Field of 1 byte indicating the SS Return Result Operation
code, as defined in GSM 04.80, so that the external
application is informed about the result of the SS
operation
15.12 *E2STKU STK Send USSD
Unsolicited Result Code:
*E2STKU: <coding>, <text_length>, <alpha_id>
Description:
The ME shall passes the <alpha_id> parameter within SEND USSD command
to the external application, by means of the unsolicited result code *E2STKU.
This informs the external application that the ME is sending a USSD string to
the network.
<coding> Description
0 Text is coded in unpacked format, using the SMS default
7-bit coded alphabet, as defined in GSM 03.38 with bit 8
set to 0. It corresponds to data coding scheme of 8 bit
1 Text is coded in packed format, using the SMS default 7-
bit coded alphabet, packed in 8-bit octets, as defined in
GSM 03.38. It corresponds to data coding scheme of 7-
bit GSM default alphabet
<text_length> Description
Integer type (0-240) Value indicating the maximum length of field
<alpha_id>
<alpha_id> Description
String type Field of string type format between “”. Coding is
according to EF
AND
as defined in GSM 11.11
‘FF’ In case that the SIM does not provide the optional alpha
identifier, or this is a null data object, the ME shall give
‘FF’ to indicate “SS string sent” so that the external
application is informed