GSM/GPRS Module
M35 AT Commands Manual
M35_AT_Commands_Manual Confidential / Released 65 / 186
1. This command may be aborted generally by receiving an
ATH
command or a character during
execution. The aborting is not possible during some states of connection establishment such as
handshaking.
2. Parameter "I" and "i" only if no *# code is within the dial string.
3.
<n>
is default value for last number that can be dialed by
ATDL
.
4. *# codes sent with
ATD
are treated as voice calls. Therefore, the command must be terminated with
a semicolon ";".
5. See
ATX
command for setting result code and call monitoring parameters.
6. Responses returned after dialing with ATD
For voice call two different responses mode can be determined. TA returns “
OK
” immediately
either after dialing was completed or after the call was established. The setting is controlled by
AT+COLP
. Factory default is
AT+COLP=0
, which causes the TA returns “
OK
” immediately
after dialing was completed, otherwise TA will returns “
OK
”, “
BUSY
”, “
NO DIAL TONE
”, “
NO
CARRIER
”.
7. Using
ATD
during an active voice call:
When a user originates a second voice call while there is already an active voice call, the first
call will be automatically put on hold.
The current states of all calls can be easily checked at any time by using the
AT+CLCC
command.
Example
ATD10086;
// Dialing out the party‟s number
OK
7.3. ATH Disconnect Existing Connection
<mgsm>
String of
GSM
modifiers:
I
Actives
CLIR
(Disables presentation of own number to called party)
i
Deactivates
CLIR
(Enable presentation of own number to called party)
G
Activates closed user group invocation for this call only
g
Deactivates closed user group invocation for this call only
<;>
Only required to set up voice call, return to command state
ATH Disconnect Existing Connection
Execution Command
ATH[n]
Response
Disconnect existing call by local TE from command line and
terminate call.
OK
NOTES