Siemens MC55 - Manual (Page 140)

MC55 AT Command Set
7.3 ATD
s
m
obile
MC55_ATC_V01.05 Page 140 of 469 2/10/04
Confidential / Released
7.3 ATD Mobile originated call to dial a 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.
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
PIN ASC0 ASC1 MUX1 MUX2 MUX3
§ % § % § §
Reference(s)
V.25ter