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LTE Module Series
EC25&EC21 AT Commands Manual
EC25&EC21_AT_Commands_Manual 91 / 231
Parameter
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. P
arameter “I” and “i” can be omitted only when there is no “
*
”
or
“
#
”
code within the dial string.
3. See
ATX
command for setting result code and call monitoring parameters
.
4. 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 to return
“
OK
” immediately after dialing was
completed. Otherwise TA will return
“
OK
”, “
BUSY
”, “
NO DIAL TONE
”, or “
NO CARRIER
”.
5. 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
AT+CLCC
command.
Example
ATD10086;
//
Dialing out the party‟s number
OK
<n>
String of dialing digits and optionally V.25ter modifiers
Dialing digits:
0-9, * , #, +, A, B, C
Following V.25ter modifiers are ignored:
,(comma), T, P, !, W, @
<mgsm>
String of
GSM
modifiers:
I
Actives
CLIR
(Disable 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 mode
NOTES