AUTO-RETRAIN - FALLBACK/FALLFORWARD
Type:	Configuration
Format:	AT [cmds] %En [cmds]
Example:	AT %E1 <CR>
Description:	Controls auto-retrain mode and fallback/fall forward.
Command	Function
%E0	Auto-retrain disabled.
%E1	Auto-retrain enabled.
%E2	Fallback/fall forward enabled.

BIT-MAPPED REGISTERS
Register	Default
S14	138
S21	4
S22	117
S23	55
S27	73
S28	0
S31	2
S40	107
S41	3
S80	0

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

BREAK TYPE
Type:	Configuration
Format:	AT [cmds] \Kn [cmds]
Example:	AT \K1 <CR>
Description:	Configures action of break signal.
Command		Break from DTE Reliable/Normal mode	Modem receives \B	Break from remote modem
\K0		Enter command mode, do not send break to remote modem.	Buffers cleared and break sent to remote modem.	Buffers cleared and break sent to DTE.
\K1		Buffers cleared and break sent to remote modem.	Buffers cleared and break sent to remote modem.	Buffers cleared and break sent to DTE.
\K2		Enter command mode, do not send break to remote modem.	Send break to remote modem immediately.	Send break to DTE immediately.
\K3		Send break to remote modem immediately.	Send break to remote modem immediately.	Send break to DTE immediately.
\K4		Enter command mode, do not send break to remote modem.	Send break to remote modem with transmitted data.	Break sent with received data to the DTE.
» \K5		Send break with transmitted data.	Send break to remote modem with transmitted data.	Break sent with received data to the DTE.

CALLER ID
Type:	Configuration
Format:	AT [cmds] #CID=n [cmds]
Example:	AT #CID=2<CR>
Description:	Controls the Caller ID function.
Command	Function
» #CID=0	Caller ID disabled.
#CID=1	Caller ID displays formatted data.
#CID=2	Caller ID displays raw hexadecimal data.

CELLULAR TRANSMISSION LEVEL
Type:	Register
Format:	AT [cmds] S201=n [cmds]
Example:	AT S201=26 &W<CR>
Default:	Unidentified
Range:	Unidentified
Unit:	-dBm
Description:	Sets the signal level for transmission when in leased line mode.

COMPRESSION AND ERROR CORRECTION
Type:	Configuration
Format:	AT %Cn
Example:	AT %C0 *Y1<CR>
Description:	Selects data compression and error correction.
Command	Function
%C0	Data compression disabled.
%C1	Data compression enabled.
%C2	Data correction enabled.
%C3	Data compression and correction enabled.

COMPROMISE EQUALIZER
Type:	Configuration
Format:	AT [cmds] :En [cmds]
Example:	AT :E &W<CR>
Description:	Controls V.32 compromise equalizer.
Command	Function
:E0	Equalizer disabled.
» :E1	Equalizer enabled.

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

DOWNLOAD DRIVER
Type:	Immediate
Format:	AT [cmds] ^C2 [cmds]
Example:	AT ^C2 &W<CR>
Description:	Download cellular phone driver.

FAX TRANSMIT LEVEL
Type:	Register
Format:	AT [cmds] S92=n [cmds]
Example:	ATS92=10<CR>
Default:	10
Range:	1-15
Unit:	-1dBm
Description:	Controls fax transmission level.

FLASH DIAL MODIFIER TIME
Format	AT [cmds] S29=n [cmds]
Example:	ATS29=0<CR>
Default:	0
Range:	0-255
Unit:	10 ms
Description:	Time the modem will go on-hook upon receiving the ! dial modifier in dial string.

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.

HDLC ADDRESS
Type:	Register
Format:	AT [cmds] S20=n [cmds]
Example:	ATS20=6<CR>
Default:	Unidentified
Range:	0-255
Unit:	ASCII
Description:	Sets the HDLC address/BSC character.

IDENTIFY DRIVER
Type:	Immediate
Format:	AT [cmds] ^I [cmds]
Example:	AT ^I &W<CR>
Description:	Identifies cellular phone driver.

LEASED LINE TRANSMISSION LEVEL
Type:	Configuration
Format:	AT [cmds] S99=n [cmds]
Example:	AT S99=8<CR>
Default:	10
Range:	0 -15
Unit:	-1 dBm
Description:	Sets the signal level for transmission when in leased-line mode.

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

REPORT SIGNAL QUALITY
Type:	Immediate
Format:	AT [cmds] %Q [cmds]
Example:	AT %Q<CR>
Description:	Reports signal quality. If the value is greater than 7, the modem will retrain.

MAXIMUM BLOCK SIZE FOR TRANSMISSION
Type:	Configuration
Format:	AT [cmds] \An [cmds]
Example:	AT \A3 &MB28800<CR>
Description:	Sets the maximum transmittable block size.
Command	Function
\A0	Maximum MNP block size is 64 characters.
\A1	Maximum MNP block size is 128 characters.
\A2	Maximum MNP block size is 192 characters.
\A3	Maximum MNP block size is 256 characters.

MNP10 COMPRESSION
Type:	Configuration
Format:	AT [cmds] -Kn [cmds]
Example:	AT %C1 -K1 -Q0 <CR>
Description:	Selects MNP10 data compression.
Command	Function
-K0	MNP10 disabled.
» -K1	MNP10 enabled.
-K2	MNP10 enabled on answer mode only.

MNP10 FALL-BACK
Type:	Configuration
Format:	AT [cmds] -Qn [cmds]
Example:	AT *H0 -Q1 <CR>
Description:	Allows MNP10 to fall back to speeds slower than 4800bps.
Command	Function
-Q0	MNP10 at 2400 and 1200bps disabled.
» -Q1	MNP10 at 2400 and 1200bps enabled.

MNP10 LINK NEGOTIATION
Type:	Configuration
Format:	AT [cmds] *Hn [cmds]
Example:	AT *H0 -Q1 <CR>
Description:	Sets the speed at which MNP10 link negotiation will occur.
Command	Function
*H0	Link will be negotiated at highest possible speed.
*H1	Link will be negotiated at 1200bps.
*H2	Link will be negotiated at 4800bps.

MNP10 POWER LEVEL ADJUST
Type:	Configuration
Format:	AT [cmds] )Mn [cmds]
Example:	AT )M1 %C1<CR>
Description:	Controls automatic transmit power level adjustment during MNP 10 link negotiation.
Command	Function
)M0	Power level adjustment disabled.
)M1	Power level adjustment enabled.

MODULATION SELECTION DISPLAY
Type:	Immediate
Format:	AT [cmds] +MS?
Example:	AT +MS? <CR>
Description:	Displays modulation, automode, minimum rate and maximum rate settings

MODULATION SELECTION
Type:	Configuration
Format:	AT [cmds] +MS=xx,y,zzz,aaa [cmds]
Example:	AT +MS11,1,300,28800 &W<CR>
Description:	Sets options for active protocol. The transfer rates specified by z and a must be valid for the protocol selected.
Command	Function
x=0	V.21
x=1	V.22
x=2	V.22bis
x=3	V.23
x=9	V.32
x=10	V.32bis
» x=11	V.34
x=64	Bell 103A
x=69	Bell 212A
x=74	V.FC
y=0	Automode disabled.
y=1	Auto-detect highest speed enabled.
z, a=300	Set minimum or maximum transfer rate at 300bps, respectively.
z, a=1200	Set minimum or maximum transfer rate at 1200bps, respectively.
z, a=2400	Set minimum or maximum transfer rate at 2400bps, respectively.
z, a=4800	Set minimum or maximum transfer rate at 4800bps, respectively.
z, a=7200	Set minimum or maximum transfer rate at 7200bps, respectively.
z, a=9600	Set minimum or maximum transfer rate at 9600bps, respectively.
z, a=12000	Set minimum or maximum transfer rate at 12000bps, respectively.
z, a=14400	Set minimum or maximum transfer rate at 14400bps, respectively.
z, a=16800	Set minimum or maximum transfer rate at 16800bps, respectively.
z, a=19200	Set minimum or maximum transfer rate at 19200bps, respectively.
z, a=21600	Set minimum or maximum transfer rate at 21600bps, respectively.
z, a=24000	Set minimum or maximum transfer rate at 24000bps, respectively.
z, a=26400	Set minimum or maximum transfer rate at 26400bps, respectively.
z, a=28800	Set minimum or maximum transfer rate at 28800bps, respectively.

REMOTE ACCESS ESCAPE CHARACTER
Type:	Register
Format:	AT [cmds] S202=n [cmds]
Example:	ATS202=6<CR>
Default:	170
Range:	0-255
Unit:	ASCII
Description:	Sets the remote access escape character.

REPORT INFORMATION
Type:	Immediate
Format:	AT [cmds] In [cmds]
Example:	AT I1 O<CR>
Description:	Displays modem properties.
Command	Function
I0	Reports product code.
I1	Reports ROM checksum result.
I2	Reports OK.
I3	Reports firmware version.
I4	Reports OEM version.
I5	Reports country code.
I6	Reports current connection’s statistics.
I7	Reports DAA code.

SLEEP TIMER
Format	AT [cmds] S24=n [cmds]
Example:	ATS24=40<CR>
Default:	0
Range:	0 - 255
Unit:	1 second
Description:	Maximum duration of DTE and DCE inactivity allowed prior to initiating low-power sleep mode.

STATUS INDICATOR
Type:	Immediate
Format:	AT [cmds] ^T6 [cmds]
Example:	AT ^T6 &W<CR>
Description:	indicate status of cellular phone.

TEST MODES
Format		AT [cmds] S16=n [cmds]
Example:		ATS16=40<CR>
Default:		0
Range:		0-125
Unit:		Bit-mapped
Description:		Controls loopback tests, analog, digital, remote digital, and self tests.
Bit	Value		Function
0	» 0 1		Local analog loopback not in progress. Local analog loopback in progress.
1	0		Not used.
2	» 0 1		Local digital loopback not in progress. Local digital loopback in progress.
3	» 0 1		Modem not in remote digital loopback. Remote digital loopback in progress.
4	» 0 1		Remote digital loopback not requested. Remote digital loopback requested.
5	» 0 1		Remote digital loopback w/ self-test not in progress. Remote digital loopback w/ self-test in progress.
6	» 0 1		Local analog loopback w/ self-test not in progress. Local analog loopback w/ self-test in progress.

TEST MODE - PTT
Type:	Configuration
Format:	AT [cmds] %TT [cmds]
Example:	AT %TT &W<CR>
Description:	Send PTT test signals for European line test.

TRANSMISSION LEVEL
Type:	Configuration
Format:	AT [cmds] @Mn [cmds]
Example:	AT @M25 &W<CR>
Default:	0
Range:	11-31
Unit:	-1 dBm
Description:	Sets the signal level for transmission.
Command	Function
» @M0	-26dBm
@M1	-30dBm
@M2-@M10	-10dBm

FLOW CONTROL CHARACTER - XOFF
Type:	Register
Format:	AT [cmds] S33=n [cmds]
Example:	ATS33=20<CR>
Default:	19
Range:	0-255
Unit:	ASCII
Description:	Sets the character used to represent XOFF.

FLOW CONTROL CHARACTER - XON
Type:	Register
Format:	AT [cmds] S32=n [cmds]
Example:	ATS32=20<CR>
Default:	17
Range:	0-255
Unit:	ASCII
Description:	Sets the character used to represent XON.