User guide

Developers guidelines | AT commands
132 June 2010
If <dcs> indicates
that 3GPP TS 23.038
7-bit default
alphabet is used:
• If TE character set other than “HEX” (refer com-
mand Select TE Character Set +CSCS): ME/TA
converts GSM alphabet into current TE charac-
ter set according to rules of 3GPP TS 27.005
Annex A
• If TE character set is “HEX”: ME/TA converts
each 7-bit character of GSM alphabet into two
IRA character long hexadecimal number. For
exampe, character P (GSM 23) is presented as
17 (IRA 49 and 55)
If <dcs> indicates
that 8-bit data
coding scheme is
used:
ME/TA converts each 8-bit octet into two IRA
character long hexadecimal number. For example,
octet with integer value 42 is presented to TE as
two characters 2A (IRA 50 and 65)
<dcs>:
<dcs> Description
Integer 3GPP TS 23.038 Cell Broadcast Data Coding
Scheme in integer format. Default value = 0
Scenarios: 1a An incoming network initiated USSD-Notify should be presented on the
ME display.
1b An incoming network initiated USSD-Notify should also be presented to
the accessory as a unsolicited result code +CUSD: if the accessory has
Enabled result code presentation.
2 An incoming USSD-request asking for a reply should be presented both
on the display of the ME and to the accessory as a unsolicited result code
+CUSD: if the accessory has Result code enabled.
2a If the ME answer to the request then the accessory should get a
+CUSD: telling the accessory that Other I/O client has responded.
2b If the accessory answer to the request with the command AT+CUSD
then the ME is notified of the answer but there should be no presentation
of the reply on the ME display. The display should be cleared.
3a A USSD request initiated and sent from the ME should not be pre-
sented to the accessory.
3b A USSD request sent with the command AT+CUSD from the accessory
should not be presented on the display of the ME.
Network Mobile Equipment Mobile Accessory
1a Signal -> Show in display Result code presentation disabled,
Not presented to accessory
1b Result code presentation enabled,
Presented to accessory
2 Signal asking
for reply ->
Show in display Result code presentation disabled,
Not presented to accessory
Result code presentation enabled,
Presented to accessory
2a Answer
Other I/O client has
responded
<str> Description