Specifications

AT Command Set
TC35-ATC-01-V02.10 Page 13/145 02.10 / 23.05.2001
2.5 ATD Mobile originated call to dial a number
Execute command
ATD[<n>][<mg
s m][;]
Response
TA attempts to set up an outgoing call.
Note: This command may be aborted generally by receiving an ATH command
during execution. It can´t be aborted in some connection setup states,
such as handshaking. Different behavior between voice and data call. Be-
haviour depends on parameter setting of AT^SM20.
Voice call setup terminates immediately with OK.
Data call setup terminates when call has been established.
If no dialtone (parameter setting ATX2 or ATX4)
NO DIALTONE
If busy (parameter setting ATX3 or ATX4)
BUSY
If a connection cannot be set up
NO CARRIER
If successfully connected and non-voice call
CONNECT<text>
Note: <text> output only if +ATX parameter setting with value > 0.
TA switches to data state.
When TA returns to command mode after call release
OK
If successfully connected and voice call
OK
Parameter
<n> string of dialling digits and optionally V.25ter modifiers (dialling digits):
0-9, * , #, +, A, B, C
V.25ter modifiers: these are ignored: ,(comma), T, P, !, W, @
Emergency call:
<n> = 112 worldwide number (no SIM needed)
<mgsm> string of GSM modifiers:
I CLIR invocation
i CLIR suppression
Default value of <n>: last dialled number
<;> voice call , return to command state
Reference
V.25ter/GSM
07.07
Note
1. Parameter „l“ and „i“ only if no *#-code is within the dial string.
2. <mgsm> is not supported for data calls.
3. See also +ATX and chapter 7.4 for <text>.
4. The *#-codes are available for voice calls (i.e. use ´; ´) only.
5. If ATD is used with an USSD command (e.g. ATD*100#;) an AT+CUSD=1 is
executed implicitly. (see „AT+CUSD Unstructured supplementary service
data“, pg. 85).