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 <text>), 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 <n>
[
<mgsm>
][;]
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 <text>
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