Multi-Tech Systems MT5600SMI-XL34 Basic Voice Commands, Command +VRX Start Modem Receive Record

	Chapter 7 – Voice Commands
Basic Voice Commands
Command: +VIP	Voice Initialize All Parameters
Description:	his command causes the modem to initialize all voice parameters to their
	default values.
Syntax:	+VIP
Result Code:	OK
	ERROR If not in Voice Mode.
Command: +VRX	Start Modem Receive (Record):
Description:	This command causes the modem to start the voice reception process.
Syntax:	+VRX
Result Codes:	OK
	ERROR If not in Voice Mode.
Command: +VTS	Send Voice Tone(s)
Description:	This command causes the modem to send DTMF digit or hookflash tones with
	the duration specified by +VTD, to send DTMF digit or hookflash tones with
	duration specified by this command, or to send single or dual tone frequencies
	with duration specified with this command.
Syntax:	+VTS=<string>
Defined Values: <string>	The tone generation consists of elements in a list where each element is
	separated by a comma. Each element can be:
	1. A single character which the modem interprets as a DTMF digit (0 - 9, #, *,

or A-D) or hookflash (!), with a duration given by the +VTD command.

2. A 3-element string enclosed in square brackets, "[freq1,freq2,dur]", which the modem interprets as a general dual tone and duration selection, or

3. A 2-element string enclosed in curly braces, "{X,dur}", which the modem interprets as a DTMF digit (0 - 9, #, *, or A-D), or hookflash (!) with a duration (dur) different than that given by the +VTD command.

Missing subparameters assume the default value. Unspecified values always default to zero for frequencies, DTMF * for DTMF tones, and +VTD for duration. The omission of commas (and associated subparameters) is valid.

The quantity in the square brackets consists of a 3-element list (freq1,freq2,dur), which can be used to send single or dual tones. The first element is the first frequency (freq1) with range 0 or 200-3000 Hz. The second element is the second frequency (freq2), with range 0 or 200-3000 Hz. The third element is the duration (dur) in 0.01 second intervals with range 0- 255 (ASCII units of 10 ms). A list may contain null elements. For example [3000] means that the DCE generates a single tone at 3000 Hz for the default duration, [3000,3300] means that the DCE generates a dual tone at 3000 and 3300 Hz for the default duration, and [,3300] means that the DCE generates a single tone at 3300 Hz for the default duration.

The quantity in the curly braces consists of a 2-element list (X,dur), which can be used to send DTMF tones or hookflash. The first element is the DTMF tone or hookflash (!) character (X), and the second element is the duration (dur) in

0.01seconds. The characters are of the same set given above. A list may contain null elements. For example, {2} means DTMF tone "2" for the default duration, and {} means silence for the default duration.

The modem will stop the tone generation at the point in the string where the modem detects a parsing error, encounters an invalid frequency range, encounters a <CR>, or encounters a semi-colon.

Multi-Tech Systems, Inc. SocketModem MT5600SMI Developer’s Guide 104