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Mgsm, Tc63 at command set – Siemens TC63 User Manual

Page 143

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TC63 AT Command Set

7.3 ATD

s

TC63_ATC_V00.490

Page 143 of 501

5/24/05

Confidential / Draft - Do not copy

String of GSM modifiers:

I Activates CLIR (disables presentation of own phone number to called party)

i Deactivates CLIR (enables presentation of own phone number to called party)

G Activate Closed User Group explicit invocation for this call only.

g Deactivate Closed User Group explicit invocation for this call only.

Notes

• The command may be aborted generally when receiving a character during execution. It cannot be aborted

in some connection setup states, such as handshaking.

• Parameter "I" and "i" only if no *#-code is within the dial string.

is not supported for data calls.

is default for last number that can be dialled by

ATDL

.

• See also

ATX

for

.

If

ATD

is used with a USSD command (e.g. ATD*100#;) an AT+CUSD=1 is executed implicitly (see

AT+CUSD

).

• Parameter 'G' or 'g' will be ignored if Closed User Group was already activated, respectively deactivated with

AT+CCUG

command before. Call by call invocation of CUG uses the settings provisioned by the provider or,

if available, the settings of the parameters

and

made with

AT+CCUG

.

• The ME is equipped with a "Blacklist" function according to GSM02.07 Annex A:

After a predefined number of failed call attempts, the dialed number is entered into a read-only phonebook

called "blacklist" (phonebook "BL"). Call attempts to numbers contained in the blacklist will be barred by ME

and not signalled to the network.

An attempt to start a voice call to a barred phone number will be stopped with a CME ERROR 257 "Call

Barred".

An attempt to start a data or fax call to a barred phone number will be answered immediately with result code

"NO CARRIER".

The barred numbers are automatically removed from the blacklist according to the timing conditions specified

in GSM02.07 Annex A.

Example

The following example shows the call setup procedure when a call is already active and a second call attempt

fails because the line of the called party is busy:

(str)

atd03012345678

Dialing out the first party's number.

OK

The first call is established.

ATD03022222222

The number of the second party is dialed.

OK

The response "OK" is issued immediately though no call is established

(same behavior as is you had chosen

AT^SM20

=0.)

BUSY

Line of the second called party is busy.