Chapter 3 – Voice Commands

Command: +VIT

Voice Inactivity Timer (DTE/Modem)

Description:

This command sets the modem’s initial value for the DTE/modem inactivity timer.

 

Syntax: +VIT=<timer>

 

Values:

<timer>

Decimal number corresponding to the time in units of 1.0 second.

Default:

0

A value of 0 disables the timer. Range = 0-255.

 

 

Report Commands:

+VIT?

Reports current of selected values.

 

+VIT=?

Reports supported range of parameter values.

Command: +VLS

Analog Source/Destination Selection

Description:

This command causes the modem to select one or more source/destinations of the analog

 

data.

 

 

 

Syntax: +VLS=<label>

 

Values:

<label>

Decimal number corresponding to the selected analog source/destination

Default:

0

hardware configuration.

 

 

Report Commands:

+VLS?

Reports current of selected values.

 

+VLS=?

Reports supported range of parameter values.

 

 

Report Query Response: <label>,<devices>,<transmit event>,<receive

 

 

event>,<idle event>

 

 

Where each event subparameter is a hex number the represents an event

 

 

bit field of the reporting capabilities of each state. (See the Table Command

 

 

Options on the next page):

 

 

<label>

Identifies the modem analog source/destination hardware

 

 

 

configuration.

 

 

<devices>

A <string constant> made up of Primitives.

 

 

<xxxx event> <transmit event>, <receive event>, and <idle

 

 

 

event>subparameters are the DCE event reporting

 

 

 

capabilities for the Voice Transmit State, Voice Receive

 

 

 

State, and the Voice Command State, respectively. Each

 

 

 

of the event reporting subparameters is a hex number that

 

 

 

represents an event bit field. The hex number format is

 

 

 

defined in Table 5-6); a one in the bit field indicates that

 

 

 

the DCE can report the associated event.

 

 

Each of the possible hardware configurations has its own <label>, ..., <idle

 

 

event> description line (the above form description shows just one). A

 

 

<CR><LF> terminates each description line.

+VLS Example:

AT+VLS=?

 

 

0,””,B0804100,B0804100,B0804100

 

1,”T”,0B8433C1,0FE431C1,0B8431C1

 

2,”L”,08800300,0CE00100,08800100

 

3,”LT”,0B8433C1,0FE431C1,0B8431C1

 

4,”S”,00800300,04E00100,20800100

 

5,”ST”,0B8433C1,0FE431C1,0B8431C1

 

8,”S1",00800300, 04E00100,20800100

 

9,”S1T”,0B8433C1,0FE431C1,0B8431C1

 

11,”M1",00800300,04E00100,20800100

 

14,”H”,00800300,04E00100,20800100

 

18,”M1S”,00800300,04E00100,20800100

 

19,”M1S1",00800300,04E00100,20800100

Result Codes:

OK <label> = 0-5,8-9,11,14,18-19.

 

ERROR

The <label> value is out of range, or if the modem cannot service the request in

the <label> subparameter.

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

32

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Multi-Tech Systems MT5600BA-V92 manual Command +VIT Voice Inactivity Timer DTE/Modem, +VLS Example

MT5600BA-V92 specifications

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