Siemens Brodersen MC55 AT - Manual (Page 128)

MC55_ATC_V04.00 Page 128 of 475 3/17/06
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7.3 ATD Mobile originated call to specified number
Syntax
Command Description
This command can be used to set up outgoing voice, data or fax calls. It also serves to control Supplementary
Services. The termination character ";" is mandatory to set up voice calls or to send *# codes for Supplementary
Services. It must not be used for data and fax calls.
Additional notes on the responses returned after dialing with
ATD
:
• For voice calls, you have the choice of two different response modes that can be selected with
AT^SM20
:
AT^SM20
=1 (factory default) causes the ME to respond once the call setup is completed either successfully
("OK") or unsuccessfully ("NO CARRIER", "NO DIAL TONE", "BUSY").
AT^SM20
=0 causes the ME to return "OK" immediately after dialing was completed (i.e. before call setup ter-
minates successfully or unsuccessfully).
• For data connections, call setup always terminates when the call has been established (indicated by the result
code "CONNECT ), or when it fails (indicated by "NO CARRIER"). The settings of
AT^SM20
do not
apply.
Different call release indications:
• Upon termination, an outgoing fax or data call may show a different result code than a voice call would show
under identical conditions. In order to track down the actual reason for call termination,
AT+CEER
or
ATS18
should be used for all applicable connections.
Using
ATD
during an active call:
• When a user originates a second voice call whil there is already an active voice call, the first call will automat-
ically put on hold. The second call attempt is acknowledged with "OK" immediately after dialing with ATD has
completed, without relation to a successful call setup. In case of failure, the additional result codes "NO CAR-
RIER", "NO DIAL TONE", "NO CARRIER" will be presented afterwards (see example below).
Parameter Description
String of dialing digits and optional V.250 modifiers: 0-9, *, #, +, A, B, C
The following V.250 modifiers are ignored: ,(comma), T, P, !, W ,@
Exec Command
ATD
[ ][;]
Response(s)
If no dialtone (parameter setting
ATX
2 or
ATX
4):
NO DIALTONE
If busy (parameter setting
ATX
3 or
ATX
4):
BUSY
If a connection cannot be set up:
NO CARRIER
OK
If successfully connected and non-voice call (TA switches to online data mode):
CONNECT
When TA returns to command mode after call release:
OK
If successfully connected and voice call:
OK
Reference(s) PIN ASC0 ASC1 MUX1 MUX2 MUX3 Charge Last
V.250 § % § % § § ! ! !
(text)