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Chapter 7 – Voice Commands
Multi-Tech Systems, Inc. SocketModem MT5600SMI Developer’s Guide 105
Reporting Supported Range of Parameter Values:
Command: +VTS=?
Response: (<freq1> range), (<freq2> range), (<dur> range)
Example: (200-3000),(200-3000),(0-255)
OK
Result Codes: OK Valid command.
ERROR
The <string> command is invalid, or a selected frequency is out of range.
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 duration given by the +VTD command.
3. Play DTMF 2 with 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 duration given by the +VTD command.
6. Play DTMF * with duration of 60 ms.
7. Play tone pair at 800 Hz and 1300 Hz with duration of 500 ms.
8. Play DTMF 9 with 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 duration given by the +VTD command.
2. Play DTMF 2 with 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 duration given by the +VTD command.
5. Play DTMF 9 with 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 duration given by the +VTD command.
2. Play silence with duration of 500 ms.
3. Play DTMF 2 with duration given by the +VTD command.
4. Play silence with duration given by the +VTD command.
5. Play DTMF 9 with 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
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> 0 (only valid number) selects automatic gain control
Reporting Current or Selected Values:
Command: +VGR?
Response: <gain>
Example: 0 For the default setting.
Reporting Supported Range of Parameter Values:
Command: +VGR=?
Response: <gain> range
Example: 0
Result Codes: OK <gain> = 0.
ERROR Otherwise, or if not in Voice Mode.