Hayes Command set		
use a comma for a pause (normally 2 secs)		
command must be either all uppercase or all lower case		
"note, when compression is used, must send data from computer to modem faster than setting for modem to modem"		
"note, 68000 machines have limited buffering. Reduce baud rates"		
+++	escapeto enter command mode during a call	
A/	repeats last AT command	
AT	Attention (must precede following commands)	
	A	manually answer call
	s	dial number stored in NVRAM (or execute command)
	P	pulse dial (S14 register)
	T	tone dial (S14 register)
	!	hook flash (~rapidly pressing hook down & up)
	@	wait for silence
	W	wait for a second dial tone
	;	return to command mode after dialing
	*#	other characters available for dialing	
	Ds	dial string s	
	Hn	on/off hook (0= off)	
	Bn	which Bell CCITT modulation (other line speeds use CCITT) (stored S27 bit 6)	
		"n=0, selects CCITT v.2.1 operation at 300 bps; v.22 operation at 1200 bps"	
		"n=1, selects Bell 103 operation at 300 bps; Bell 212A operation at 1200 bps"	
	Fn	selects line speed/modulation	
		0.00	auto detect (equiv to setting N to 1)
		1.00	"300 baud, using B setting"
		2.00	not supported
		3.00	v.23 (originator at 75 bps & Answerer at 1200 bps)
		4.00	"1200 baud, using B setting"
		5.00	v.22 bis
		6.00	v.32 bis or v.32 4800
		7.00	v.32 bis 7200
		8.00	v.32 bis 9600 or v.32 9600
		9.00	v.32 bis 12000
		10.00	v.32 bus 14400
	In	ID Codes	
		0.00	product code
		1.00	ROM checksum
		2.00	Checksum test
		3.00	Product Revision Number
		4.00	Software Copyright
	Ln	Modem Speaker volume	
		1.00	high
		2.00	medium (default)
		3.00	low
	Mn	Speaker Controls (when on)	
		0.00	always off
		1.00	on till remote carrier (Default)
		2.00	always on
		3.00	"on till carrier, but off when dialing"
	Nn	Detection & Negotiation (stored S31 bit 1)	
		0.00	"disable autodetect. Subsequent handshake conducted according to S37. If S37=0, handshake conducted according to recently sensed DTE speed"
		1.00	auto detect (default) (equiv to F0)
	On	to data mode (after escape (+++))	
		0.00	without retrain (Handling determined by the Call Establishment Task
		1.00	with retrain
	Qn	modem messages (e.g. Œconnect 2400¹) (S14)	
		0.00	"Display messages (default, see V)"
		1.00	don¹t display
	Sn=y	set register n to integer value Y. Can store two unique sets of S­Register settings	
		0=0	disable autoanswer
	Sn?	shows current value register n	
	Vn	"modem message type (0=numeric, 1=word)"	
	Xn	which modem messages will be displayed at all (see Numerical/Verbal table below) (S22)	
		0.00	Modem ignores dial tone & busy. Sends ŒConnect¹ message when connection established by blind dialing
		1.00	Modem ignores dial tone and busy signal. Sends ŒConnect XXXX¹ message reflecting bit rate when connection established by blind dialing
		2.00	"Modem ignores busy but waits for dial before dialing. If none within 5 secs, ŒNO DIAL TONE¹ message. Sends ŒConnect XXXX¹ message reflecting bit rate when connection established."
		3.00	"Modem ignores dial. Sends BUSY message if, well, busy.  Sends ŒConnect XXXX¹ message reflecting bit rate when connection established"
		4.00	"If no dial tone within 5 secs, ŒNO DIAL TONE¹ message. Sends BUSY message if, well, busy. Sends ŒConnect XXXX¹ message reflecting bit rate when connection established. (default)"
	&Cn	Data Carrier Detect (DCD) Status (S21)	
		0.00	always on (always if in synchronous operation)
		1.00	on when remote carrier signal detected
	&Dn	results of an On to Off switch of Data Terminal Ready (DTR) signal (which tells the modem that a computer or terminal is connected & powered on) (S21)	
		0.00	ignore
		1.00	enter command mode
		2.00	"hang up, enter command mode, disable autoanswer"
		3.00	hang up & reset to NVRAM
	&F	temporarily restores to factory settings. Does not overwrite NVRAM	
	&Gn	CCITT guard tone frequency used for European telecommunications	
		0.00	none
		1.00	none
		2.00	1800 hz
	&W	writes current S register settings to NVRAM. (preserved even if power off)	
	&Zs	stores telephone number s (not affected by &W or &F commands) in NVRAM	
	&Q	?	
		6.00	turns off error compression & error correction)
	Z	restores NVRAM settings	
	?	Register 95 (add codes to set each bit)	
		1.00	"let CONNECT show modem to modem speed, not computer to modem speed"
		2.00	append /ARQ to CONNECT result if any advanced protocol is in use
		3?	?
		4?	enable CARRIER result code (modem to modem speed)
		8.00	enable PROTOCOL result code
		32.00	enable COMPRESSION result code
Hayes Numerical/Verbal equivalents			
0.00	OK		
1.00	CONNECT		
2.00	RING
3.00	NO CARRIER
4.00	ERROR
5.00	CONNECT 1200
6.00	NO DIAL TONE
7.00	BUSY
8.00	NO ANSWER
9.00	CONNECT 0600
10.00	CONNECT 2500