Multi-Tech Systems MT5600SMI-92 Command +VLS Analog Source/Destination Selection, +VSP=1, 107

	Chapter 7 – Voice Commands
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>
Defined Values:	<label> Decimal number corresponding to the selected analog
	source/destination hardware configuration (see Table 6-5).
	Response: <label>

Example: 0 For the default setting.

Reporting Supported Range of Parameter Values: Command: +VLS=?

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 Table 6-6):

<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 6-6); 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.

	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.

Table 7-5. +VLS Command Options

Label	Primitives	Description	+VTX	+VRX	+VSP=1
0	None	DCE on-hook. Local phone connected to the line.
1	T	DCE off-hook. DCE connected to the line. Local phone	X	X
		provided with power to detect hook condition.
2	L	DCE on-hook. Local phone connected to the DCE.	X	X
3	LT	DCE off-hook. Local phone connected to the line. DCE	X	X
		connected to the line.
4	S	Internal Speaker connected to the DCE. DCE on-hook.	X
		Local phone connected to the line.
5	ST	Internal Speaker connected to the line. DCE off-hook. DCE	X	X
		connected to the line. Local phone provided with power to
		detect hook condition.
6	M	Internal Microphone connected to the DCE. DCE on-hook.		X
		Local phone connected to the line.
7	MST	Internal Microphone and Internal Speaker connected to the			X
		line. DCE off-hook. DCE connected to the line. Local phone
		provided with power to detect hook condition.
8	S1	External Speaker connected to the DCE. DCE on-hook.	X

Multi-Tech Systems, Inc. SocketModem MT5600SMI Developer’s Guide 107