Siemens TC35i User Manual page 69

TC35i AT Command Set
3.3 AT^SIND
Command Description
The read command provides a list of all indicators supported by
resented with its registration mode and current value.
The write command can be used to select a single indicator in order to modify its registration and to view the
current value.
Parameter Description
(num)
<indValue>
Integer type value in the range stated below for the corresponding
(str)
<indDescr>
String values and their
<indValue>
All indicators supported by
cators can be found there.
The following indicators are accessible via
"ciphcall"
(num)
<Mode>
0
1
TC35i_ATC_V02.07
Confidential / Released
ranges.
are accessible with this command, too. A detailed description of these indi-
AT+CIND
AT^SIND
Ciphering Status Change Indication
As stated in GSM specifications 02.07 and 02.09 the ciphering indicator feature
allows the ME to detect that ciphering is not switched on and to indicate this to
the user.
The ciphering indicator feature may be disabled by the home network operator
setting data in the "administrative data" field (EF
GSM 11.11.
If this feature is not disabled by the SIM, then whenever a connection is in
place, which is, or becomes unenciphered, an indication shall be given to the
user. This enables the user's decision how to proceed.
Read command returns valid ciphering status only if a call is in progress or
active.
If EF setting disables the ciphering indicator feature read command always
AD
indicates a ciphered link and no URC presentaion will take place.
Note:
The following restrictions apply if the same serial channel is used for
"ciphcall" indication and for the action triggering this URC. In general, the rec-
ommended solution is to use a dedicated channel for all status signalling via
URCs.
• If an unciphered mobile originated SMS is performed,
URCs on the same serial channel will be issued after the related "OK" and
indicate the ciphering state at this time. Because the SMS is already sent at
this time, you will get 2 URCs on this channel, but both are indicating that
ciphering is enabled.
• If an unciphered mobile originated data call is performed,
call" URCs on the same serial channel will be issued after the interface is
not longer blocked by the call (call is released or temporarily stopped) and
indicate the ciphering state at this time.
0 .. Current call or SMS is not ciphered.
1 .. Current call or SMS is ciphered.
Indicator is deregistered, i.e. no such indicator event report (URC) will be
issued.
Indicator is registered.
Page 69 of 439
and
AT+CIND
<indDescr>
only:
s
m
obile
. Each indicator is rep-
AT^SIND
) in the SIM, as defined in
AD
AT^SIND
"ciphcall"
AT^SIND
AT^SIND
1/30/04
"ciph-