Multitech BL-Series User Manual download pdf (Page 38)

Voice Commands for the MT5656ZDXV and MT5600ZDXV Modems

Multi-Tech Systems, Inc. Commands Reference Guide (PN S000273D)

Command: +VIP Voice Initialize All Parameters

Description: This 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 4-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 inter-

prets 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 4-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 0.01 seconds. 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 semicolon.

Reporting Supported Range of Parameter Values:

Command: +VTS=?

Response: (<freq1> range), (<freq2> range), (<dur> range)

Example: (200-3000),(200-3000),(0-255)

Result Codes: OK Valid command.

ERROR The <string> command is invalid, or a selected frequency is out of range.

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Multitech BL-Series User Manual Page 38

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