Siemens MC55 AT manual ATD Mobile originated call to specified number, ATDnmgsm, No Dialtone

7.3ATD 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

PIN ASC0 ASC1 MUX1 MUX2 MUX3 Charge  Last

§ % § % § § ! ! !

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

<n>(text)

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 ,@

MC55_ATC_V04.00	Page 128 of 475	3/17/06
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