AC75 AT Command Set
18.6 AT+VTD s
AC75_ATC_V01.002 Page 460 of 569 10/30/06
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18.6 AT+VTD Tone duration
This command refers to an integer <duration> that defines the length of tones transmitted with the AT+VTS
command.
Syntax
Parameter Description
Duration of the DTMF signal in 1/10 seconds with tolerance.
The minimum duration of DTMF signals is 300ms.
1(&F)(P)...255
Test Command
AT+VTD=?
Response(s)
+VTD: (list of supported<duration>s)
OK
Read Command
AT+VTD?
Response(s)
<duration>
OK
Write Command
AT+VTD=<duration>
Response(s)
OK
ERROR
+CME ERROR
Reference(s) PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge 4Last
GSM 07.07 - + + + + + + - - -
<duration>(num)