Chapter 3 – Voice Commands

+VTS Examples:

Example 1

 

This example illustrates tone generation without using any null elements.

 

The command example is followed by a description of command execution.

 

 

AT+VTS= {!,30},1,2,[1000,1300,50],!,{*,6},[800,1300,50],9

 

1.

Hookflash with a duration of 300 ms.

 

2.

Play DTMF 1 with a duration given by the +VTD command.

 

3.

Play DTMF 2 with a duration given by the +VTD command.

 

4.

Play tone pair at 1 000 Hz and 1 300 Hz with a duration of 500 ms.

 

5.

Hookflash with a duration given by the +VTD command.

 

6.

Play DTMF * with a duration of 60 ms.

 

7.

Play tone pair at 800 Hz and 1300 Hz with a duration of 500 ms.

 

8.

Play DTMF 9 with a duration given by the +VTD command.

Example 2

This example illustrates tone generation using null elements.

The command example is followed by a description of command execution. AT+VTS=1,2,[1000,1300,50],[800],9

1. Play DTMF 1 with a duration given by the +VTD command.

2. Play DTMF 2 with a duration given by the +VTD command.

3. Play tone pair at 1000 Hz and 1300 Hz with a duration of 500 ms.

4. Play tone pair at 800 Hz with a duration given by the +VTD command.

5. Play DTMF 9 with a duration given by the +VTD command.

Example 3

This example illustrates tone generation using null elements and periods of silence. The command example is followed by a description of command execution.

AT+VTS=1,[,,50],2,[ ],9

 

1. Play DTMF 1 with a duration given by the +VTD command.

 

2. Play silence with a duration of 500 ms.

 

3. Play DTMF 2 with a duration given by the +VTD command.

 

4. Play silence with a duration given by the +VTD command.

 

5. Play DTMF 9 with a duration given by the +VTD command.

Command +VTX

Start Modem Transmit (Playback)

Description:

This command causes the modem to start the voice transmission process.

 

Syntax: +VTX

Default:

None

 

Result Codes:

CONNECT. The modem accepts the command.

 

ERROR. The modem is not connected to at least one off-hook telephone line or one non-

 

telephone line.

Command: +VGR

Voice Gain Receive (Record Gain)

Description:

This command causes the modem to set the gain for received voice samples.

 

Syntax: +VGR=<gain> selects automatic gain control. Range 0-255

Default:

128

 

Result Codes:

OK <gain> = 0.

 

ERROR. Otherwise, or if not in Voice Mode.

Report Commands:

+VGR?

Reports current or selected values.

 

+VGR=?

Reports supported range of parameter values.

Command: +VGT

Voice Gain Transmit (Playback Volume)

Description:

This command causes the modem to set the volume level.

 

Syntax: +VGT=<level>.

Values:

<level>

Decimal number corresponding to the volume level. Range = 0-255.

Default:

128

 

Report Commands:

+VGT?

Reports current of selected values.

 

+VGT=?

Reports supported range of parameter values.

Multi-Tech Systems, Inc. AT Commands Reference Guide (S000273G)

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Multi-Tech Systems MT5600BA-V92 Command +VTX Start Modem Transmit Playback, Command +VGR Voice Gain Receive Record Gain
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MT5600BA-V92 specifications

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