2 tone duration - +vtd – Rainbow Electronics GM862-QUAD-PY User Manual

Page 149

AT Commands Reference Guide

80000ST10025a Rev. 5 - 09/07/08

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 .

AT+VTS=??

Test command provides the list of supported s and the list of
supported s in the format:

(list of supported s)[,(list of supported s)]

Reference

GSM 07.07 and TIA IS-101

+VTS - DTMF Tones Transmission

SELINT 2

AT+VTS=

[,duration]

Execution command allows the transmission of DTMF tones.

Parameters:
- string of 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 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 (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 s and the list of
supported s in the format:

(list of supported s)[,(list of supported 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[=
]

Set command sets the length of tones transmitted with +VTS command.

Parameter:
- 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:

AT+VTD=?

Test command provides the list of supported s in the format:
(list of supported s)