Card Type	Modem (synchronous/asynchronous)
Chipset	Unidentified
Maximum Data Rate	14.4Kbps
Data Modulation	Bell 103A, 208, 212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.33
Error Correction/Compression	MNP5, V.42, V.42bis
Data Bus	Serial

CONNECTIONS
Function	Label	Function	Label
PREVIOUS button	BT1	Leased telephone line out	CN2
1 button	BT2	Switched telephone line out	CN3
2 button	BT3	AC power in	CN4
3 button	BT4	Diagnostic connector	CN5
NEXT button	BT5	Serial port	CN6
ENTER button	BT6	LCD display	LCD
Telephone line in	CN1

MISCELLANEOUS TECHNICAL NOTES

There are several jumpers on this board. Their exact locations and functions are unidentified.

SUPPORTED STANDARD COMMANDS

Basic AT Commands

+++, ‘comma’, A/

A, B, E, H, L, M, N, O, P, T, V, X, Y, Z

&C, &D, &F, &G, &K, &M, &Q, &S, &T, &W, &Y, &Z

Extended AT Commands

\T, \V, \X

S-Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S26

V.25bis Commands

CIC, CRN, CRS, DIC, PRN

Note: See MHI help file for complete information.

UNIDENTIFIED COMMANDS
Command	Default

BREAK TYPE
Type:	Configuration
Format:	AT [cmds] \Kn [cmds]
Description:	Configures the modem's reaction to receiving a break signal.
Command	Function
\K0	Modem ignores received break signal.
\K1	Buffers are cleared, break is transmitted immediately.
\K2	Buffers are not cleared, break is transmitted immediately.
í \K3	Buffers are not cleared, break is transmitted in sequence with data.

CARRIAGE RETURN DELAY
Type:	Configuration
Format:	AT [cmds] \Fn [cmds]
Description:	Selects whether the modem will insert a delay the length of five characters after sending any character that would cause a printer or teletype's carriage to return.
Command	Function
\F0	Carriage return delay enabled.
í \F1	Carriage return delay disabled.

CONNECT MODE
Type:	Configuration
Format:	AT [cmds] \Nn [cmds]
Description:	Controls the type of connection the modem will make.
Command	Function
\N0	Normal mode enabled.
\N1	Reliable mode enabled.
\N2	Normal mode enabled.
í \N3	Auto-reliable mode enabled.

CTS AND RTS SIGNALS
Type:	Configuration
Format:	AT [cmds] &Rn [cmds]
Description:	Controls the behaviour of the CTS and RTS signals.
Command	Function
í &R0	CTS follows RTS.
&R1	CTS follows DTR.
&R2	CTS normal.

DIAL
Type:	Immediate
Format:	AT [cmds] D<#>;[cmds]
Description:	Dials the telephone number indicated according to any modifiers included in the string.
Command	Function
DLn	If connection is not successful, modem will dial the number stored in memory location n.
DP	Pulse dialing enabled.
DR	Answer mode enabled; originate mode disabled following handshake initiation. This must be the last modifier except for a semicolon.
DS=n	Dial stored telephone number n.
DT	Tone dialing enabled.
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@	Wait for Quiet 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;	Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command.

DISPLAY CONFIGURATION
Type:	Immediate
Format:	AT [cmds] &Vn [cmds]
Description:	Displays the indicated part of the modem's configuration.
Command	Function
&V0	Displays the command settings, stored profiles, and stored telephone numbers 0 through 5.
&V1	Displays all stored telephone numbers.

DISPLAY CONFIGURATION - MNP
Type:	Immediate
Format:	AT [cmds] \S [cmds]
Description:	Displays the settings of the modem's MNP-related commands.

DISPLAY INFORMATION
Type:	Immediate
Format:	AT [cmds] In [cmds]
Description:	Displays information requested about the modem.
Command	Function
I0	Displays product identification code.
I1	Displays ROM checksum.
I2	Tests and displays ROM checksum result.
I3	Displays firmware revision.

ERROR CORRECTION TYPE
Type:	Configuration
Format:	AT [cmds] \Pn [cmds]
Description:	Selects which types of error correction the modem will attempt to use.
Command	Function
\P0	Modem will use V.42 error correction only.
\P1	Modem will use MNP error correction only.
í \P2	Modem will use V.42 or MNP error correction.

FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] \Qm,n [cmds]
Description:	Selects the type or types of flow control the modem will use.
Note:	Two types of flow control may be active at any time. There is no difference between the values of m and n.
Command	Function
\Q0	Flow control disabled.
\Q1	CTS/RTS flow control enabled.
\Q2	DC1/DC2 flow control enabled.
í \Q3	DC1/DC3 flow control enabled.

LOCK SERIAL PORT
Type:	Configuration
Format:	AT [cmds] \Bn [cmds]
Description:	Sets operation of serial port speed.
Command	Function
\B0	Serial port speed follows connect speed.
í \B1	Serial port speed locked.

MNP MODE
Type:	Configuration
Format:	AT [cmds] \Cn [cmds]
Description:	Selects which classes of MNP the modem will attempt to use.
Command	Function
\C1	Modem may use MNP class 1 only.
\C2	Modem may use MNP class 2 or 1.
\C3	Modem may use MNP class 3 and below.
\C4	Modem may use MNP class 4 and below.
í \C5	Modem may use all MNP classes (5 and below).

PROTOCOL/SPEED
Type:	Configuration
Format:	AT [cmds] Fn [cmds]
Description:	Selects the modulation protocol and line speed the modem will attempt to connect with.
Command	Function
í F0	Auto-detect fastest common protocol.
F1	Attempt to connect with V.21 at 300bps.
F2	Attempt to connect with V.22 at 600bps.
F3	Attempt to connect with V.23 at 1200/75bps.
F4	Attempt to connect with V.22 at 1200bps.
F5	Attempt to connect with V.22bis at 2400bps.
F6	Attempt to connect with V.32 at 9600bps.
F7	Attempt to connect with V.32 at 14.4Kbps.

RESULT CODE - DIALING
Type:	Configuration
Format:	AT [cmds] \Dn [cmds]
Description:	Selects whether the modem will display DIALING when it goes off hook to dial a telephone number.
Command	Function
í \D0	DIALING result code disabled.
\D1	DIALING result code enabled.

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

V.42bis MODE
Type:	Configuration
Format:	AT [cmds] \Mn [cmds]
Description:	Selects whether the modem will attempt to connect with V.42bis data compression.
Command	Function
í \M0	V.42bis data compression enabled.
\M1	V.42bis data compression disabled.

COMMAND SET - AT
Type:	Immediate
Format:	RHA
Description:	Resets the modem to AT command mode.

REQUEST LISTED NUMBERS
Type:	Immediate
Format:	RLN
Description:	Requests the modem to return the list of stored numbers.