Specifications

HE863 family AT commands reference guide

80377ST10083a Rev.4 – 2012-02-01

3.5.3.6. Voice Control

3.5.3.6.1. DTMF Tones Transmission - +VTS

+VTS - DTMF Tones Transmission

AT+VTS=

<dtmf>

[,duration]

Execution command allows the transmission of DTMF tones.

Parameters:

<dtmf> - a single ASCII character in the set (0 9), #,*,(A D); 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: this command is only available during voice call

AT+VTS=?

Test command provides <dtmf> and supported <duration>s in the format:

( <dtmf>)[,(supported <duration>)]

Reference 3GPP TS 27.007 and TIA IS-101

3.5.3.6.2. Tone Duration - +VTD

+VTD - Tone Duration

AT+VTD=

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.

AT+VTD?

Read command reports the current Tone Duration, in the format:

AT+VTD=?

Test command provides the list of supported <duration>s in the format:

(list of supported <duration>s)

Reference 3GPP TS 27.007 and TIA IS-101

3.5.3.7. Commands For GPRS

3.5.3.7.1. GPRS Mobile Station Class - +CGCLASS

+CGCLASS - GPRS mobile station class