2 tone duration - +vtd – Rainbow Electronics GM862-QUAD-PY User Manual
Page 149
AT Commands Reference Guide
80000ST10025a Rev. 5 - 09/07/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved
page 149 of 434
+VTS - DTMF Tones Transmission
SELINT 0 / 1
An enhanced version of Test command has been defined: AT+VTS=??,
that provides the correct range of values for <DTMF>.
AT+VTS=??
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)]
Reference
GSM 07.07 and TIA IS-101
+VTS - DTMF Tones Transmission
SELINT 2
AT+VTS=
<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); 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).
AT+VTS=?
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)]
Reference
GSM 07.07 and TIA IS-101
3.5.4.6.2 Tone Duration - +VTD
+VTD - Tone Duration
SELINT 0 / 1
AT+VTD[=
<duration>]
Set command sets the length of tones transmitted with +VTS command.
Parameter:
<duration> - duration of a tone
0 - the duration of every single tone is dependent on the network (factory
default)
1..255 - duration of every single tone in 1/10 sec.
Note: If parameter is omitted the behavior of Set command is the same as
Read command.
AT+VTD?
Read command reports the current Tone Duration, in the format:
<duration>
AT+VTD=?
Test command provides the list of supported <duration>s in the format:
(list of supported <duration>s)