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TC63 AT Command Set
7.3 ATD
7.3
ATD Mobile originated call to specified number
Syntax
Exec Command
ATD<n>[<mgsm>][;]
Response(s)
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
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
Reference(s)
V.250
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
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,
should be used for all applicable connections.
Using
during an active call:
ATD
•
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
(text)
<n>
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 ,@
Emergency call : <n> = 112, 911 or 08, standardized GSM emergency number (no SIM needed).
TC63_ATC_V00.490
Confidential / Draft - Do not copy
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ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge
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!
AT^SM20
or
AT+CEER
Last
!
!
do not
ATS18
5/24/05
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