Card Type	Modem/Fax card
Chip Set	Texas Instruments
Maximum Modem Rate	56Kbps
Maximum Fax Rate	14.4Kbps
Data Modulation Protocol	Bell 103/212Z ITU-T V.21, V.22, V.22bis, V.32, V.32bis, V.34, V.34bis, V.90, X2
Fax Modulation Protocol	ITU-T V.17, V.27ter, V.29, V.21 CH 2
Error Correction/Compression	MNP5, V.42, V.42bis
Fax Class	Class I & 2
Data Bus	16-bit ISA

CONNECTIONS
Function	Label		Function		Label
Line in (RJ-11)		CN1		Speaker jack		CN3
Line out (RJ-11)		CN2		Microphone jack		CN4

SERIAL PORT ADDRESS
Setting	JP1/A	JP1/B	JP1/C
COM1 (3F8h)	Closed	Closed	Closed
COM2 (2F8h)	Open	Closed	Closed
COM3 (3E8h)	Closed	Open	Closed
COM4 (2E8h)	Open	Open	Closed
Plug & play	Open	Open	Open

INTERRUPT
Setting	JP2/A	JP2/B	JP2/C	JP2/D	JP2/E	JP2/F
IRQ3	Closed	Open	Open	Open	Open	Open
IRQ4	Open	Closed	Open	Open	Open	Open
IRQ5	Open	Open	Closed	Open	Open	Open
IRQ9	Open	Open	Open	Closed	Open	Open
IRQ10	Open	Open	Open	Open	Closed	Open
IRQ15	Open	Open	Open	Open	Open	Closed
Plug & play	Open	Open	Open	Open	Open	Open

SUPPORTED COMMAND SET

Basic AT Commands

AT, ‘+++’, A/

A, E, H, M, O, V

&C, &G, &T, &W, &Z

S Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18

Note: See MHI Help File for full command documentation.

BREAK OPTIONS
Type:		Configuration
Format		AT [cmds] &Yn [cmds]
Description:		Sets the method for break transmission during error-control and ASB connections.
Command	Function
í &Y0	Destructive signaling, buffers cleared, does not pass break to DCE
&Y1	Expedited destructive signaling, buffers cleared, immediately send timed break
&Y2	Expedited signaling, break sent out of sequence

COMMUNICATION PROTOCOLS
Type:	Configuration
Format:	AT [cmds] Bn [cmds]
Description:	Selects the communication protocol for data calls
Command	Protocol
í B0	ITU-T V.25 answer sequence
B1	Answer tone

COMPRESSION
Type:	Configuration
Format:	AT [cmds] &Kn [cmds]
Description:	Selects data compression
Command	Function
&K0	Data compression disabled
&K1	MNP5 and V.42bis enabled if DTE rate is higher than link rate and data compression supported by remote
&K2	MNP5 and V.42bis enabled
&K3	V.42bis enabled

CONNECT MODE
Type:	Configuration
Format:	AT [cmds] &Mn [cmds]
Description:	Controls the type of connection the modem will operate in
Command	Function
&M0	Normal mode enabled
í &M4	Auto-reliable mode enabled
&M5	MNP reliable mode enabled

DATA SET READY (DSR)
Type:	Configuration
Format:	AT [cmds] &Sn [cmds]
Description:	Selects DSR options
Command	Function
í &S0	DSR forced high
&S1	DSR high only while modem is handshaking or connected

DATA TERMINAL READY (DTR)
Type:	Configuration
Format:	AT [cmds] &Dn [cmds]
Description:	Selects modem response to DTR
Command	Function
&D0	DTR override
&D1	DTR toggle causes online command mode
í &D2	DTR toggle causes modem to go on-hook

DCE LINE SPEED (MAXIMUM)
Type:	Configuration
Format	AT [cmds] &Nn [cmds]
Description:	Sets the maximum allowable data exchange rate attempted during handshake process.
Command	Function
&N1	Speed of last connection
&N2	300bps
&N3	1200bps
&N4	2400bps
&N5	4800bps
&N6	7200bps
&N7	9600bps
&N8	12.0Kbps
&N9	14.4Kbps
&N10	16.8Kbps
&N22	19.2Kbps
&N12	21.6Kbps
&N13	24.0Kbps
&N14	26.4Kbps
&N15	28.8Kbps
&N16	31.2Kbps
&N17	33.6Kbps
&N18	32.0Kbps (X2)
&N19	36.0Kbps (X2)
&N20	40.0Kbps (X2)
&N21	44.0Kbps (X2)
&N22	48.0Kbps (X2)
&N23	49.3Kbps (X2)
&N24	50.7Kbps (X2)
&N25	52.0Kbps (X2)
&N26	53.3Kbps (X2)
&N27	54.7Kbps (X2)
&N28	56.0Kbps (X2)
&N29	57.3Kbps (X2)
&N30	58.7Kbps (X2)
&N31	60.0Kbps (X2)
&N32	61.3Kbps (X2)

DCE LINE SPEED (MINIMUM)
Type:	Configuration
Format	AT [cmds] &Un [cmds]
Description:	Sets the minimum allowable data exchange rate attempted during handshake process.
Command	Function
&U1	No minimum
&U2	300bps
&U3	1200bps
&U4	2400bps
&U5	4800bps
&U6	7200bps
&U7	9600bps
&U8	12.0Kbps
&U9	14.4Kbps
&U10	16.8Kbps
&U22	19.2Kbps
&U12	21.6Kbps
&U13	24.0Kbps
&U14	26.4Kbps
&U15	28.8Kbps
&U16	31.2Kbps
&U17	33.6Kbps
&U18	32.0Kbps (X2)
&U19	36.0Kbps (X2)
&U20	40.0Kbps (X2)
&U21	44.0Kbps (X2)
&U22	48.0Kbps (X2)
&U23	49.3Kbps (X2)
&U24	50.7Kbps (X2)
&U25	52.0Kbps (X2)
&U26	53.3Kbps (X2)
&U27	54.7Kbps (X2)
&U28	56.0Kbps (X2)
&U29	57.3Kbps (X2)
&U30	58.7Kbps (X2)
&U31	60.0Kbps (X2)
&U32	61.3Kbps (X2)

DIAL
Type:	Immediate
Format:	AT [cmds] D<#> [cmds]
Description:	Dials telephone number according to any modifiers included in the string
Note:	Any combination of modifiers can be used to produce the desired dial functions in sequence.
Command	Function
DL	Re-dial last number
DP	Pulse dialing enabled
DT	Tone dialing enabled/Pulse dialing disabled
DW	Dialing resumed following dial tone detection
D,	Dialing paused for amount of time specified in S8 register
D!	Flash function initiated. Modem commanded to go off-hook for specified time before returning on-hook.
D/	Delays for 125ms before dialing
DR	Answer mode enabled; originate mode disabled following handshake initiation.
DSn	Dial stored telephone number n
D@	Wait for Quite Answer function enabled. Modem waits until a "quiet answer," a ring-back signal followed by silence up to the time specified in S7, is received prior to executing the rest of the dial string.
D$	Wait for prompt tone detection function enabled. Waits for prompt tone for amount of time specified by the S7 command.
D;	Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command.

ERROR CORRECTION RESULT CODES
Type:	Configuration
Format:	AT [cmds] &An [cmds]
Description:	Selects error correction responses
Command	Function
&A0	ARQ result codes disabled
&A1	ARQ to word CONNECT result codes enabled when an error correction connection is made
&A2	V.32 indicator added in result codes for calls at or above 4800bps
&A3	Protocol response added: /LAPM, /MNP, or NONE and V.42bis/MNP5

FACTORY DEFAULT PROFILE
Type:	Configuration
Format:	AT [cmds] &Fn [cmds]
Description:	Sets values in active profile to values found in the default profile
Command	Function
&F0	Load standard factory configuration
&F1	Restore factory configuration 1. Hardware flow control
&F2	Restore factory configuration 2. Software flow control

FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] &Hn [cmds]
Description:	Enables flow control options
Command	Function
&H0	Flow control disabled
&H1	RTS to CTS flow control enabled
&H2	XON/XOFF flow control enabled
&H3	RTS/CTS & XON/XOFF flow control enabled

LIST DISPLAY
Type:	Immediate
Format:	AT [cmds] &$ [cmds]
Description:	Displays a list of ampersand commands

LOCK SERIAL PORT
Type:	Configuration
Format:	AT [cmds] &Bn [cmds]
Description:	Sets operation of serial port speed
Command	Function
&B0	Serial speed follows connect speed
í &B1	Serial speed locked
&B2	In answer mode; serial speed fixed for ARQ calls, variable for non-ARQ calls

PULSE DIALING RATIO
Type:	Configuration
Format:	AT [cmds] &Pn [cmds]
Description:	Selects pulse dial make/break ratio
Command	Function
í &P0	39/61ms at 10pps (North America)
&P1	33/67ms at 10pps (Europe)

REPORT INFORMATION
Type:	Immediate
Format:	AT [cmds] In [cmds]
Description:	Displays information requested
Command	Function
I0	Reports product code
I1	Reports ROM checksum
I2	Reports results of RAM self-test
I3	Reports product type
I4	Reports current modem settings
I5	Reports NVRAM settings
I6	Reports link diagnostics
I7	Reports product confirmation
I8	Reserved
I9	Reports plug & play information
I10	Reserved
I11	Reports call statistics

RESTORE PROFILE ON POWER-UP
Type:	Configuration
Format:	AT [cmds] Yn [cmds]
Description:	Restores a selected profile into the active profile on power-up (hard reset)
Command	Function
í Y0	Restore profile 0 on power-up
Y1	Restore profile 1 on power-up
Y2	Restore generic factory template (&F0)
Y3	Hardware flow control (&F1)
Y4	Software flow control (&F2)

RESULT CODES
Type:	Configuration
Format:	AT [cmds] Qn [cmds]
Description:	Enables modem to send result codes to the DTE
Command	Function
í Q0	Result code sending enabled
Q1	Result code sending disabled
Q2	Result code sending only in originate mode
Q3	Result code sending only in ring mode

RTS
Type:	Configuration
Format:	AT [cmds] &Rn [cmds]
Description:	Selects RTS
Command	Function
&R0	RTS signal is ignored
í &R1	Data is sent to DTE only is RTS in forced high

SELECT CALL PROGRESS RESULT CODES
Type:	Configuration
Format:	AT [cmds] Xn [cmds]
Description:	Enables selection of tone detection and associated result code format options
Command	Function
X0	Busy and dial tone detection disabled; result codes 0 - 4 enabled.
X1	Busy and dial tone detection disabled; result codes 0 - 5 & 10 - 25 enabled.
X2	Busy tone detection disabled, dial tone detection enabled; result codes 0 - 6 & 10 - 236 enabled.
X3	Busy and dial tone detection disabled; 8 - 236 enabled.
X4 - X6	Busy and dial tone detection enabled; extended result codes enabled

SOFT RESET
Type:	Immediate
Format:	AT [cmds] Zn [cmds]
Description:	Restores modem profiles previously saved in non-volatile RAM using the &W command.
Command	Function
Z0	Restore NVRAM profile selected by ATY command
Z1	Restore NVRAM profile 0
Z2	Restore NVRAM profile 1
Z3	Restore factory default profile 0 (&F0)
Z4	Restore factory default profile 1 (&F1)
Z5	Restore factory default profile 2 (&F2)

SPEAKER VOLUME
Type:	Configuration
Format:	AT [cmds] Ln [cmds]
Description:	Controls speaker volume
Command	Function
L0	Low volume setting
L1	Low volume setting
í L2	Medium volume setting
L3	Highest volume setting

XON/XOFF PASS-THROUGH
Type:	Configuration
Format:	AT [cmds] &In [cmds]
Description:	Selects whether XON/XOFF signals are sent to remote modem
Command	Function
í &I0	XON/XOFF signals trapped by local modem
&I1	XON/XOFF passed through local modem and remote
&I2	XON/XOFF passed through local modem only

ANSWER TONES, DEFAULT TIMES, AND CONNECTION LIMITING
Type:		Register
Format		AT [cmds] S28=n [cmds]
Description:		Controls answer tones, connections, and time specified
Command	Function
S28=0	Eliminates V.32 answer tones for a faster connection
S28=8	All default times are in 1sec units
S28=255	Connections disabled except V.32 9600bps

BIT-MAPPED REGISTER S27
Format:		AT [cmds] S27=n [cmds]
Range:		0-255
Description:		Select modulations and error correction flags
Bit	Value		Function
0	0 1		V.21/Bell 103 mode disabled V.21/Bell 103 mode enabled
1	0 1		Unencoded modulation in V.32 mode disabled Unencoded modulation in V.32 mode enabled
2	0 1		V.32 modulation enabled V.32 modulation disabled
3	0 1		2100Hz answer tone enabled 2100Hz answer tone enabled
4	0 1		V.23 fallback mode disabled V.23 fallback mode enabled
5	0 1		V.32bis mode enabled V.32bis mode disabled
6	0		Reserved
7	0 1		Software compatibility mode disabled Software compatibility mode enabled

BIT-MAPPED REGISTER S32
Format:		AT [cmds] S32=n [cmds]
Range:		0-255
Description:		Select modulations and call control flags
Bit	Value		Function
0	0 1		V.8 call indicate disabled V.8 call indicate enabled
1	0 1		V.8 mode disabled V.8 mode enabled
2	0 1		V.FC modulation enabled V.FC modulation disabled
3	0 1		V.34 modulation enabled V.34 modulation disabled
4	0 1		V.34+ modulation enabled V.34+ modulation disabled
5	0 1		X2 modulation enabled X2 modulation disabled
6	0 1		V.90 modulation enabled V.90 modulation disabled
7	0		Reserved

BIT-MAPPED REGISTER S33
Format:		AT [cmds] S33=n [cmds]
Range:		0-255
Description:		Enables/disables symbol rates
Bit	Value		Function
0	0 1		2400 symbol rate enabled 2400 symbol rate disabled
1	0 1		2743 symbol rate enabled 2743 symbol rate disabled
2	0 1		2800 symbol rate enabled 2800 symbol rate disabled
3	0 1		3000 symbol rate enabled 3000 symbol rate disabled
4	0 1		3200 symbol rate enabled 3200 symbol rate disabled
5	0 1		3429 symbol rate enabled 3429 symbol rate disabled
6	0		Reserved
7	0 1		2400 symbol rate enabled 2400 symbol rate disabled

BIT-MAPPED REGISTER S34
Format:		AT [cmds] S34=n [cmds]
Range:		0-255
Description:		Controls trellis coding options
Bit	Value		Function
0	0 1		8S-2D trellis encoding enabled 8S-2D trellis encoding disabled
1	0 1		16S-4D trellis encoding enabled 16S-4D trellis encoding disabled
2	0 1		32S-2D trellis encoding enabled 32S-2D trellis encoding disabled
3	0 1		64S-4D trellis encoding enabled 64S-4D trellis encoding disabled
4	0 1		Non-linear coding enabled Non-linear coding disabled
5	0 1		TX level deviation enabled TX level deviation disabled
6	0 1		Pre-emphasis enabled Pre-emphasis disabled
7	0 1		Pre-coding enabled Pre-coding disabled

BIT-MAPPED REGISTER S41
Format:		AT [cmds] S41=n [cmds]
Range:		0-255
Description:		Controls trellis coding options
Bit	Value		Function
0, 1	0000 0001 1000		Full-duplex speaker mode Half-duplex speaker mode Message waiting
7-2	0		Reserved

BREAK CHARACTER LENGTH
Type:	Register
Format	AT [cmds] S21=n [cmds]
Range:	0-255
Unit:	10ms
Description:	Sets the length of break characters sent from modem to DTE in MNP or V.42 mode

DCE LINE SPEED (PARTIALLY BIT-MAPPED)
Type:			Register
Format			AT [cmds] S35=n [cmds]
Description:			Sets the maximum allowable data exchange rate attempted during handshake process and limits x2 back channel operation
Command			Function
S35=0			No back channel rate
S35=1			28.8Kbps
S35=2			26.4Kbps
S35=3			24.0Kbps
S35=4			21.6Kbps
S35=5			19.2Kbps
S35=6			16.8Kbps
S35=7			14.4Kbps
Bit	Value	Function
3	í 0 1	X2 server operation disabled X2 server operation enabled
4	í 0 1	A /m law operation disabled A /m law operation enabled
5	í 0 1	A /m law detection enabled A /m law detection disabled
6	í 0 1	Reduced power enabled Reduced power disabled
7	0	Reserved

DTR IGNORE TIME ON CONNECT
Type:	Register
Format	AT [cmds] S25=n [cmds]
Range:	0-255
Unit:	.01 second
Description:	Sets time modem waits to hang-up when DTR signal shuts off
Note: This is the function of this register when &D2 is set.

FLOW CONTROL CHARACTER - XOFF
Type:	Register
Format:	AT [cmds] S23=n [cmds]
Range:	0-255
Unit:	ASCII
Description:	Sets the character used to represent XOFF

FLOW CONTROL CHARACTER - XON
Type:	Register
Format:	AT [cmds] S22=n [cmds]
Range:	0-255
Unit:	ASCII
Description:	Sets the character used to represent XON

INACTIVITY TIMER
Type:	Register
Format	AT [cmds] S19=n [cmds]
Range:	0-255
Unit:	1min
Description:	Maximum duration of DTE and DCE inactivity allowed prior to initiating hang-up process.
Note: S19=0 disables the timer and allows indefinite inactivity.