General product description M20
Version 8 dated 15.03.00
12
Siemens Information and Communication Products
7
Feat_SMoverflow
Short message overflow indication
Messages from the Short Message telephone service
are saved on the SIM. The number of messages that
can be saved depends on the SIM card used. An ad-
visory is output if there is insufficient memory
available for an incoming message.
Set or query SMS overflow presentation mode or query
SMS overflow”
GSM 02.07
8
Feat_DTE_DCE
DTE /DCE interface
Modem interface between data terminal equipment
and data circuit terminating equipment
See “AT+IFC Set TE-TA local data flow control”
,
,
GSM 02.07
–
9
Feat_IntAccess
International access function
The international access code to the PSTN (Public
Switched Telephone Network) is dialled by holding
down the <0> key until ‘+’ appears on the display
(nominal time approx. 1 second). The access code,
thus, does not depend on the location (international
roaming).
The international access code can also be dialled
using the conventional country-specific prefix (e.g.
00 in Austria, Germany).
call to dial a number and call of supplementary services”
GSM 02.07
10 Feat_ServInd
Service indicator
The call processing status of the terminal is shown
on the display when the terminal is idle.
See “AT+CREG Network registration”
GSM 02.07
11 Feat_DTMF
Dual-tone multifrequency function
If you press the signal key during an existing con-
nection, a DTMF signal is transmitted to the remote
station. The digits entered between signal transmis-
sion and call pickup are rejected. DTMF digits are
not saved on repertory dialling keys.
DTMF and tone generation (<Tone> in {0-9, *, #, A, B, C,
D})”
GSM 02.07
12 Feat_SIM
Subscription identity management
The IMSI (International Mobile Subscriber Identity)
is used for internal signalling and is saved on the
SIM (processor card). If the SIM is removed from
the terminal, any existing connections are cleared
down and further call setup is prevented (exception:
emergency calls).
See “AT+CIMI Request international
GSM 02.07
13 Feat_OnOff
On/off switch
2
)
Switch off is implemented only via AT commands.
See “AT^SMSO Switch off mobile station turn off”
GSM 02.07
y (off)
–
14 Feat_A51
Support of encryption A5/1
GSM 02.07
15 Feat_A52
Support of encryption A5/2
GSM 02.07
No Mnemonic
1)
Mobile station feature
3)
Ref.
Available
via AT+C
Available
via MMI