VFD X modem/telephone/ISDN Settings and Configuration

CONNECTIONS
Purpose	Location	Purpose	Location
Line out	CN1	DC power	CN5
Line in	CN2	Speaker	CN6
Digital control (Proprietary	CN3	Power switch	SW1
RS-232/422	CN4

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
VM	Red	On/Blinking	Unread stored messages exist
VM	Red	Off	No unread stored messages exist
AA	Red	On	Auto-answer enabled
AA	Red	Off	Auto-answer disabled
CD	Red	On	Carrier signal detected
CD	Red	Off	Carrier signal not detected
OH	Red	On	Modem is off-hook
OH	Red	Off	Modem is on-hook
RD	Red	Blinking	Modem is receiving data
RD	Red	Off	Modem is not receiving data
TD	Red	Blinking	Modem is transmitting data
TD	Red	Off	Modem is not transmitting data
TR	Red	On	DTR signal is high
TR	Red	Off	DTR signal is low
MR	Red	On	Power is on
MR	Red	Off	Power is off

AUTO-RETRAIN
Type:	Configuration
Format:	AT %En
Example:	AT %E1 <CR>
Description:	Selects auto-retrain mode.
Command	Function
» %E0	Auto-retrain disabled.
%E1	Auto-retrain enabled.

BREAK SEND
Type:	Configuration
Format:	AT [cmds] \Bn [cmds]
Example:	AT \B3 &W<CR>
Range:	1-9
Default	3
Unit:	.1 second
Description:	Sends break to modem.

COMPRESSION
Type:	Configuration
Format:	AT %Cn
Example:	AT I2 %C1 &S0<CR>
Description:	Selects data compression.
Command	Function
%C0	Data compression disabled.
%C1	MNP5 enabled.
%C2	V.42bis enabled.
» %C3	MNP5 and V.42bis enabled.

CONNECT MODE
Type:	Configuration
Format:	AT [cmds] \Nn [cmds]
Example:	AT \N1 DT555-1212<CR>
Description:	Sets connect mode.
Command	Function
\N1	Direct mode.
\N0	Normal mode.
\N2	Reliable mode.
» \N3	Auto-reliable mode.
\N4	V.42 reliable mode.
\N5	MNP error correction mode.

FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] \Gn [cmds]
Example:	AT \G1 &K3<CR>
Description:	Selects modem port flow control.
Command	Function
» \G0	Flow control disabled.
\G1	Flow control enabled.

LINE SIGNAL LEVEL
Type:	Configuration
Format:	AT [cmds] %L [cmds]
Example:	AT %L &W<CR>
Unit:	-dBm
Description:	Returns received line signal level.

LOCK SERIAL PORT
Type:	Configuration
Format:	AT [cmds] \Jn [cmds]
Example:	AT %L3 %B14 \J0<CR>
Description:	Sets operation of serial port speed.
Command	Function
» \J0	Serial speed locked.
\J1	Serial speed follows connect speed.

MAXIMUM BLOCK SIZE FOR TRANSMISSION
Type:	Configuration
Format:	AT [cmds] \An [cmds]
Example:	AT \A3 %C1<CR>
Description:	Sets the maximum transmittable block size.
Command	Function
\A0	MNP block size is 64 characters.
» \A1	MNP block size is 128 characters.
\A2	MNP block size is 192 characters.
\A3	MNP block size is 256 characters.

MNP STREAM/BLOCK MODE
Type:	Configuration
Format:	AT [cmds] \Ln [cmds]
Example:	AT \L1 DT555-1212<CR>
Description:	Selects the transfer mode for MNP.
Command	Function
» \L0	Stream mode for MNP enabled.
\L1	Block mode for MNP enabled.

REPORT SIGNAL QUALITY
Type:	Configuration
Format:	AT [cmds] %Q [cmds]
Example:	AT %Q &W<CR>
Description:	Reports signal quality.

REPORT MODEM STATUS
Type:	Immediate
Format:	AT [cmds] \S [cmds]
Example:	AT \S &W<CR>
Description:	Displays current modem configuration.