Multi-Tech Systems MT5634SMI V.92, MT5634SMI V.34 manual Command Data Carrier Detect DCD Control

			Chapter 1 – AT Commands, S-Registers and Result Codes
Command:	&Cn	Data Carrier Detect (DCD) Control
Values:		n = 0, 1, 2
Default:		1
Description:		&C0	Forces the DCD circuit to be always ON.
		&C1	DCD goes ON when the remote modem’s carrier signal is detected, and
			goes OFF when the carrier signal is not detected.
		&C2	DCD turns OFF upon disconnect for time set by S18. It then goes high again
			(for some PBX phone systems).
Command:	&Dn	Data Terminal Ready (DTR) Control
Values:		n = 0, 1, 2, or 3
Default:		2
Description:		&D0	Modem ignores true status of DTR signal and responds as if it is always on.
		&D1	If DTR drops while in online data mode, the modem enters command mode,
			issues an OK, and remains connected.
		&D2	If DTR drops while in online data mode, the modem hangs up. If the signal is
			not present, the modem will not answer or dial.
		&D3	If DTR drops, modem hangs up and resets as if ATZ command were issued.
Command:	&En	XON/XOFF Pacing Control
Values:		n = 12 or 13
Default:		12
Description:		&E12 Disables XON/XOFF pacing.
		&E13 Enables XON/XOFF pacing.
Command:	&Fn	Load Factory Settings
Values:		n = 0
Default:		None
Description:		&F0	Load factory settings as active configuration.
		Note: See also the Z command.
Command:	&Gn	V.22bis Guard Tone Control
Values:		n = 0, 1, or 2
Default:		0
Description:		&G0	Disable guard tone.
		&G1	Set guard tone to 550 Hz.
		&G2	Set guard tone to 1800 Hz.

Note: The &G command is not used in North America.

Command: &Kn Flow Control Selection

Values:	n = 0, 3, or 4
Defaults:	3
Description:	&K0	Disable flow control.
	&K3	Enable CTS/RTS hardware flow control.
	&K4	Enable XON/XOFF software flow control.

Multi-Tech Systems, Inc. SocketModem MT5634SMIxx Reference Guide (S000263C) 12