MaxTech V.42bis Toggle, Resets modem after DTR toggle, Recall factory default configuration

V_	V0	Numeric responses
	V1	Word responses
X_	X0	Hayes Smartmodem 300 compatible
		responses/blind dialing
	X1	Same as X0 plus all CONNECT responses/
		blind dialing
	X2	Same as X1 plus dial tone detection
	X3	Same as X1 plus busy signal detection/blind
		dialing
	X4	All responses and dial tone and busy signal
		detection
Y_	Y0	Modem does not send or respond to break
		signals
	Y1	Modem sends break signal for four seconds
		before disconnecting
Z_	Z0	Reset and retrieve active configuration
		profile 0
	Z1	Reset and retrieve active configuration
		profile 1

3.4	Extended AT Commands
&C_	&C0	Force Carrier Detect Signal High (ON)
	&C1	Turn on Carrier Detect signal when remote
		carrier signal is present
&D_	&D0	Modem ignores the Data Terminal Ready
		signal
	&D1	Modem returns to Command Mode after DTR
		toggle
	&D2	Modem hangs up, returns to the Command
		Mode after DTR toggle
	&D3	Resets modem after DTR toggle
&F_	&F	Recall factory default configuration
&G_	&G0	Guard tone disabled
	&G1	550 Hz guard tone
	&G2	1800 Hz guard tone
&M_	&M0	Asynchronous operation
&P_	&P0	United States setting for off-hook (make) -
		to-on-hook (break) ratio
	&P1	UK and Hong Kong off-hook (make)-to-on-
		hook (break) ratio
&S_	&S0	Force DSR Signal High (ON)
	&S1	DSR is off in command mode, on in on-line

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