Siemens TC37 Module - At+Vtd=<N> Tone Duration

AT Command Set
TC3X_ATC_01_V04.00 Page 117 of 204 29.05.2002
4.45 AT+VTD=<n> Tone duration
Test command
AT+VTD=?
This command refers to an integer <duration> that defines the length of tones
emitted as a result of the +VTS command.
Response
+VTD (list of supported <duration>s) OK
Parameter
See write command
Read command
AT+VTD?
Response
<duration> OK
Parameter
See write command
Write command
AT+VTD=
<duration>
Response
OK
Parameter
<duration>
1 – 255 duration of the tone in 1/10 second
Reference
GSM 07.07
Note