
GSM/GPRS Module
M35 AT Commands Manual
M35_AT_Commands_Manual Confidential / Released
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Parameter
The two commands
ATL
and
ATM
are implemented only for V.25 compatibility reasons and have no
effect.
13.3. AT+VTD Tone Duration
Parameter
<value>
0
Speaker is always off
1
Speaker is on until TA inform TE that carrier has been detected
2
Speaker is always on when TA is off-hook
AT+VTD Tone Duration
Test Command
AT+VTD=?
Response
+VTD:
( list of supported
<internalduration>
s )[,( list of
supported
<duration>
s )]
OK
Read Command
AT+VTD?
Response
+VTD: <internalduration>,<duration>
OK
Write Command
AT+VTD=<internalduration>[,<duratio
n>]
Response
This command refers to an integer
<internalduration>
that
defines the length of tones emitted as a result of the
+VTS
command. This does not affect the D command.
OK
Reference
GSM 07.07
<internalduration>
1-255
Duration between two tones in 1/10 second
<duration>
0
Do not set duration of every single tone.
1-100000
Duration of every single tone in 1 ms
NOTE