Telit LE910 V2 Series AT Commands
80446ST10707A Rev. 0– 2015-11-03
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 126 of 509
Mod. 0808 2011-07 Rev.2
4.1.4.6. Voice Control
DTMF Tones Transmission - +VTS
+VTS - DTMF Tones Transmission
<dtmfstring>
[,duration]
Execution command allows the transmission of DTMF tones.
Parameters:
<dtmfstring> - string of <dtmf>s, i.e. ASCII characters in the set (0-9),
#,*,(A-D),P; it allows the user to send a sequence of DTMF tones, each of
them with a duration that was defined through +VTD command.
<duration> - duration of a tone in 1/100 sec.; this parameter can be specified only
if the length of first parameter is just one ASCII character
0 - a single DTMF tone will be transmitted for a duration depending on the
network, no matter what the current +VTD setting is.
1..255 - a single DTMF tone will be transmitted for a time <duration> (in 10 ms
multiples), no matter what the current +VTD setting is.
Note: this commands operates in voice mode only (see +FCLASS).
Note: the character P does not correspond to any DTMF tone, but it is interpreted as
a pause of 3 seconds between the preceding and succeeding DTMF string elements
Test command provides the list of supported <dtmf>s and the list of supported
<duration>s in the format:
(list of supported <dtmf>s)[,(list of supported <duration>s)]
3GPP TS 27.007 and TIA IS-101
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