AT Command Set Definitions

Use the bookmark button to the left for specific issues on controls!
	Code	Description
	%Cn	Enable/Disable Data Compression
	%En	Auto-Retrain control
	&Cn	DCD Control
	&Dn	DTR Option
	&Fn	Recall Factory Profile
	&Gn	Select Guard Tone
	&Kn	Data Flow Control (Most non-US Robotics Modems)
	&Kn	Enables/Disables Data Compression (Texas Inst., USR)
	&Qn	Communication (Synchronous/Asynchronous Mode)
	&Rn	RTS/CTS (Hardware) Flow Control
	&Tn	Test Mode
	&V	View Configuration
	&Wn	Store User Profile
	&Yn	Default User Profile
	&Zn=x	Store Phone Number
	)Mn	Cellular Power Level Adjustment
	*Hn	Link Negotiation Speed
	+++	Escape Sequence
	+MS	Select Modulation
	:En	Compromise Equalizer Setting
	?	Read Currently Selected S Register
	@Mn	Initial Cellular Power Level Setting
	\An	Select Maximum MNP Block Size
	\Bn	Transmit Break
	\Gn	Modem to Modem (Software) Flow Control
	\Ln	Select MNP Block/Stream Mode
	\Nn	Protocol Negotiation Selection
	A	Answer
	A/	Re-execute Command
	Bn	CCITT or Bell Selection
	Cn	Carrier Control
	Dn	Dial
	En	Command Echo
	Fn	Select Modulation
	Hn	Disconnect (Hang-up)
	In	Identification
	Ln	Speaker Volume
	Mn	Speaker Control
	Nn	Automode Enable (Automatic Line Speed Detection)
	On	Return to On-Line Data Mode
	P	Set Pulse Dial Default
	Qn	Result Code On/Off
	Sn	Select a Specific S Register
	Sn=x	Write an S Register Value
	Sn?	Read an S Register
	T	Set Tone Dial Default
	Vn	Result Code Format
	Wn	Negotiation Progress (Connect Message) Control
	Xn	Extended Result Code
	Yn	Long Space Disconnect
	Zn	Modem Reset
	+++	Escape Sequence