Card Type	Modem(asynchronous)
Chip Set	Unidentified
Maximum Data Rate	14.4Kbps
Maximum Fax Rate	14.4Kbps
Data Bus	External
Fax Class	Class I & II
Data Modulation Protocol	Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis
Fax Modulation Protocol	ITU-T V.17, V.21CH2, V.27ter, V.29
Error Correction/Compression	MNP5, V.42, V.42bis

CONNECTIONS
Function	Label		Function		Label
Line in		CN1		Power in		CN4
Line out		CN2		Power switch		SW1
RS-232/422		CN3

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
TXD	Red	On	Modem is transmitting data
TXD	Red	Off	Modem is not transmitting data
RXD	Red	On	Modem is receiving data
RXD	Red	Off	Modem is not receiving data
DCD	Red	On	Carrier signal detected
DCD	Red	Off	Carrier signal not detected
LB	Red	On	Battery is low (ten minutes power remaining)
LB	Red	Off	Normal operation

BIT-MAPPED REGISTER S14
Format:			AT [cmds] S14=n [cmds]
Default:			Read only
Range:			0 - 255
Description:			Displays command echo, result codes, pulse/tone, buffer size and answer/originate
Bit	Value			Function
0	0			Not used
1		0 1			Command echo disabled Command echo enabled
2		0 1			Result codes enabled Result codes disabled
3		0			Numeric result codes enabled Verbose result codes enabled
4		0			Not used
5		0 1			Pulse dialing enabled Tone dialing enabled
6		0 1			Normal buffer size Small buffer
7		0 1			Answer mode Originate mode

BIT-MAPPED REGISTER S21
Format:			AT [cmds] S21=n [cmds]
Default:			32
Range:			0 - 255
Description:			Controls DTR, DCD and long space disconnect
Bit	Value			Function
4, 3		í 00 01 10 11			DTR ignored Escape command state on low DTR, remain off hook Go on hook and auto answer disabled Reset on low DTR
5		í 0 1			DCD forced high or Computer Systems Interface compliant DCD normal or Port Contender compliant
6		0			Not used
7		0 í 1			Long space disconnect disabled Long space disconnect enabled

BIT-MAPPED REGISTER S22
Format:			AT [cmds] S22=n [cmds]
Default:			68
Range:			0 - 255
Description:			Controls speaker, extended result codes and Break/make ratio
Bit	Value			Function
3, 2		00 01 í 10 11			Speaker disabled Speaker disabled until DCD high Speaker enabled Speaker after dialing until DCD high
6, 5, 4		000 001 010 011 í 100			Disabled Enable extended result codes Enable extended result codes and dial tone detect Enable extended result codes and busy signal detect Enable dial tone detect and busy signal detect
7		í 0 1			Break/make ratio 61/39 Break/make ratio 67/33

BIT-MAPPED REGISTER S23
Format:			AT [cmds] S23=n [cmds]
Default:			23
Range:			0 -255
Description:			Controls test options, serial port speed, parity and guard tone
Bit	Value			Function
0	0 í 1			Remotely requested remote digital loopback disabled Remotely requested remote digital loopback enabled
1		0 í 1			DTE speed of less than 2400bps only enabled DTE speed of 2400bps or greater only enabled
2		0 í 1			DTE speed of less than 1200bps only enabled DTE speed of 1200bps or greater only enabled
4, 3		00 í 01 10 11			Parity even Parity space Parity odd Parity null
6		í 00 01 10			Guard tone disabled 550Hz guard tone enabled 1800Hz guard tone enabled

BIT-MAPPED REGISTER S24
Format:			AT [cmds] S24=n [cmds]
Default:			2
Range:			0 - 255
Description:			Controls compromise equalization
Bit	Value			Function
3, 2, 1, 0		0000 0001 í 0010 0011 0100 0101 0110 0111			0dB equalization 2dB equalization 4dB equalization 6dB equalization 8dB equalization 10dB equalization 12dB equalization 14dB equalization

BIT-MAPPED REGISTER S28
Format:			AT [cmds] S28=n [cmds]
Default:			49
Range:			0 - 255
Description:			Controls speaker and error correction
Bit	Value			Function
3, 2, 1, 0	0000 í 0001 0010 0011			Speaker disabled Speaker disabled until DCD high Speaker enabled Speaker while dialing until DCD high
7, 6, 5, 4		0000 0001 0010 í 0011 0100			Normal mode Auto MNP mode MNP mode Auto V.42 mode LAPM mode

BIT-MAPPED REGISTER S29
Format:			AT [cmds] S29=n [cmds]
Default:			16
Range:			0 - 255
Description:			Controls DTR and carrier control
Bit	Value			Function
3, 2, 1, 0	0000 0001 0010 0011			DTR ignored Escape command state on low DTR, remain off hook Go on hook and auto answer disabled Reset on low DTR
7, 6, 5, 4		0000 0001 0010 0011			DCD forced high DCD follows remote modem Conforms to Computer Systems Interface Conforms to Port Contender

BUFFER SIZE
Type:	Configuration
Format:	AT [cmds] $Bn [cmds]
Description:	Controls buffer size
Command		Function
í $B0		Normal buffer size (2.2K)
$B1		Reduce buffer size to 1.5K

CANCELER
Type:	Configuration
Format:	AT [cmds] $An [cmds]
Description:	Controls echo canceler length
Command		Function
$A0		Standard canceler enabled
í $A1		Long canceler for round trip delays of over 36.833ms enabled

CARRIER DETECT
Type:	Configuration
Format:	AT [cmds] &Cn [cmds]
Description:	Controls DCD, Computer Systems Interface and Port Contender
Command		Function
&C0		DCD forced high
í &C1		DCD follows remote modem
&C2		Conforms to Computer Systems Interface
&C3		Conforms to Port Contender

COMPRESSION
Type:	Configuration
Format:	AT [cmds] $Cn [cmds]
Description:	Controls data compression
Command		Function
$C0		Data compression disabled
í $C1		Data compression enabled

CONNECT/SPEED MESSAGE
Type:	Configuration
Format:	AT [cmds] $Xn [cmds]
Description:	Controls connect and speed message displayed
Command		Function
$X0		Normal connect and DCE speed message enabled
$X1		Normal connect and DTE speed message enabled
í $X2		Extended connect and DCE speed message enabled
$X3		Extended connect and DTE speed message enabled

DIAL INTERRUPT
Type:	Configuration
Format:	AT [cmds] $Kn [cmds]
Description:	Controls dial interrupt
Command		Function
$K0		Dial interrupt disabled
í $K1		Dial interrupt enabled

DISPLAY STORED INFORMATION
Type:	Configuration
Format:	AT [cmds] &Vn [cmds]
Description:	Displays stored phone numbers, configuration profiles and S registers
Command		Function
&V0		Display stored phone numbers
&V1		Display current configuration profiles
&V2		Display contents of S registers
&V3		Display stored profiles briefly

DSR SIGNAL
Type:	Configuration
Format:	AT [cmds] &Sn [cmds]
Description:	Controls DSR, Computer Systems Interface and Port Contender
Command		Function
í &S0		DSR forced high
&S1		DSR follows remote modem
&S2		Conforms to Computer Systems Interface
&S3		Conforms to Port Contender

EQUALIZATION
Type:	Configuration
Format:	AT [cmds] $Qn [cmds]
Description:	Controls compromise equalization
Command		Function
$Q0		0dB equalization
$Q1		2dB equalization
í $Q2		4dB equalization
$Q3		6dB equalization
$Q4		8dB equalization
$Q5		10dB equalization
$Q6		12dB equalization
$Q7		14dB equalization

FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] $Fn [cmds]
Description:	Controls XON/XOFF, ENQ/ACK, DTR/DSR and CTS/RTS flow control
Command		Function
$F0		XON/XOFF enabled
$F1		XON/XOFF passthrough enabled
$F2		ENQ/ACK enabled
$F3		DTR/DSR enabled
í $F4		CTS/RTS enabled
$F5		Flow control disabled

INACTIVITY TIMER
Type	Configuration
Format	AT [cmds] S36=n [cmds]
Default	0
Range	0 - 255
Unit	1 minute
Description	Sets length of time the modem waits before disconnect if no data sent or received

LINE SPEED
Type:	Configuration
Format:	AT [cmds] S37=n [cmds]
Description:	Controls speed at which modem attempts to connect
Command		Function
í S37=0		Line speed follows DTE speed. If DTE is over 9600bps, attempt connect at 14.4Kbps
S37=1		Connect at V.23 75/1200bps
S37=2		Not used
S37=3		Connect at 300bps
S37=4		Not used
S37=5		Connect at 1200bps
S37=6		Connect at 2400bps
S37=7		Connect at 4800bps
S37=8		Not used
S37=9		Connect at 9600bps
S37=10		Not used
S37=11		Not used

LINE SPEED
Type:	Configuration
Format:	AT [cmds] &Ln [cmds]
Description:	Controls speed at which modem attempts to connect
Command		Function
í &L0		Line speed follows DTE speed. If DTE is over 9600bps, attempt connect at 14.4Kbps
&L1		Connect at V.23 75/1200bps
&L2		Not used
&L3		Connect at 300bps
&L4		Not used
&L5		Connect at 1200bps
&L6		Connect at 2400bps
&L7		Connect at 4800bps
&L8		Not used
&L9		Connect at 9600bps
&L10		Not used
&L11		Not used

PARITY
Format:			AT [cmds] S30=n [cmds]
Default:			0
Range:			0 - 255
Description:			Controls parity
Bit	Value			Function
1, 0		00 01 10 11			Parity space Parity even Parity null Parity odd

PROTOCOL
Format:		AT [cmds] S27=n [cmds]
Default:		64
Range:		0 - 255
Description:		Selects data modulation protocol
Bit	Value		Function
0	í 0 1		ITU-T mode Bell mode

PROTOCOL
Type:	Configuration
Format:	AT [cmds] $En [cmds]
Description:	Controls protocol used
Command		Function
$E0		Normal mode
í $E1		Auto MNP mode
$E2		MNP mode
$E3		Auto V.42 mode
$E4		LAPM mode

RETRAIN
Format:			AT [cmds] S15=n [cmds]
Default:			5
Range:			0 -255
Description:			Controls number of retrains per minute allowed
Bit	Value			Function
3, 2, 1, 0	0000			Not used
7, 6, 5, 4		í 0000 0001 0010 0011 0100			Disconnect If more than four retrain attempts in three minutes Disconnect If more than four retrain attempts in four minutes Disconnect If more than four retrain attempts in five minutes Unlimited retrain allowed Retrain disabled

RETRAIN LIMIT
Type:	Configuration
Format:	AT [cmds] &En [cmds]
Description:	Controls number of retrains per minute allowed
Command		Function
í &E0		Disconnect If more than four retrain attempts in three minutes
&E1		Disconnect If more than four retrain attempts in four minutes
&E2		Disconnect If more than four retrain attempts in five minutes
&E3		Unlimited retrain allowed
&E4		Retrain disabled

SPEED CONVERSION
Type:	Configuration
Format:	AT [cmds] $Sn [cmds]
Description:	Controls speed conversion
Command		Function
$S0		Speed conversion enabled
í $S1 - $S8		Speed conversion disabled

TEST STATUS
Format		AT [cmds] S16=n [cmds]
Default:		Read-only
Range:		0 - 255
Unit:		Bit-mapped
Description:		Contains status of loopback tests
Bit	Value	Function
0	0 1	Local analog loopback test disabled Local analog loopback test enabled
1	0	Not used
2	0 1	Local digital loopback test disabled Local digital loopback test enabled
3	0 1	Remotely requested remote digital loopback enabled Remotely requested remote digital loopback disabled
4	0 1	Locally requested remote digital loopback test not in progress Locally requested remote digital loopback test in progress
5	0 1	Remote digital loopback with local self-test disabled Remote digital loopback with local self-test enabled
6	0 1	Local analog loopback with local self-test disabled Local analog loopback with local self-test enabled
7	0	Not used

TRANSMISSION LEVEL
Type:	Configuration
Format:	AT [cmds] $Tn [cmds]
Description:	Controls transmission level
Command		Function
$T0 - $T4		-10dBm
í $T5		-10dBm
$T6		-12dBm
$T7		-14dBm
$T8		-16dBm

BITS PER CHARACTER
Type:	Configuration
Format:	AT [cmds] $Ln [cmds]
Description:	Sets character length while in data mode
Command		Function
$L0		8 bits per character
$L1		9 bits per character
í $L2		10 bits per character
$L3		11 bits per character