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TC63 AT Command Set

7.3 ATD

TC63_ATC_V00.490 Page 142 of 501 5/24/05

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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 <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.

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 ,@

Emergency call : <n> = 112, 911 or 08, standardized GSM emergency number (no SIM needed).

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

If successfully connected and non-voice call (TA switches to online data mode):

CONNECT <text>

When TA returns to command mode after call release:

If successfully connected and voice call:

Reference(s) PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge 4 Last

V.250 § % § % % § § ! ! !

<n>

(text)

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Siemens TC63 User Manual Page 142

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