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Card Type

Modem

Chip Set

Unidentified

I/O Options

Line out, line in, microphone in, speaker out

Maximum Modem Rate

56Kbps

Maximum Fax Rate

14.4Kbps

Data Modulation Protocol

ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34, V.34+, K56flex

Fax Modulation Protocol

ITU-T V.17, V.21 CH2, V.27ter, V.29

Error Correction/Compression

MNP5, V.42, V.42bis

Fax Class

Unidentified

Data Bus

8-bit ISA

CONNECTIONS

Function

Label

Function

Label

Line out (RJ-11)

CN1

Microphone in

CN3

Line in (RJ-11)

CN2

Speaker out

CN4

SERIAL PORT ADDRESS

Setting

J1

J2

J3

J4

í COM1 (3F8h)

Closed

Closed

Open

Open

COM2 (2F8h)

Closed

Open

Open

Closed

COM3 (3E8h)

Open

Closed

Closed

Open

COM4 (2E8h)

Open

Open

Closed

Closed

INTERRUPT SELECTION

IRQ

J5

J6

J7

J8

2

Closed

Open

Open

Open

3

Open

Closed

Open

Open

í 4

Open

Open

Closed

Open

5

Open

Open

Open

Closed

SUPPORTED COMMAND SET

Basic AT Commands

AT, �+++�, A/

A, B, C, E, H, M, O, P, Q, T, V, W, X, Y, Z

&C, &P, &Q, &R, &T, &V, &W, &Y, &Z

Extended AT Commands

%C, %E, %L, %Q

\A, \B, \K, \N, \V

Special Commands

-K

S Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9,S10, S11, S12, S14, S16, S18, S21, S22, S23, S24, S25

S26, S27, S28, S29, S30, S31, S32, S33, S37, S39, S41, S91, S92

Note: See MHI Help File for full command documentation.

AUTO-MODE DETECTION

Type:

Configuration

Format:

AT [cmds] Nn [cmds]

Description:

Selects various options for the automatic detection and negotiation of protocols during the handshake process if the modem is communicating with a remote modem of dissimilar speed.

Command

Function

N0

Auto-mode detection disabled. Handshake begins at line speed designated by the S37 register. If S37=0 handshake follows interface speed

N1

Auto-mode detection enabled. Handshake begins at line speed designated by the S37 register. If S37=0 handshake at highest possible speed with fallback to lower speed if necessary

COMMUNICATIONS MODE

Type:

Configuration

Format:

AT [cmds] &Mn [cmds]

Description:

Selects communications mode

Command

Mode

&M0

Asynchronous mode

DATA SET READY (DSR)

Type:

Configuration

Format:

AT [cmds] &Sn [cmds]

Description:

Selects DSR options

Command

Function

&S0

DSR forced high

&S1

DSR acts per V.25

DATA TERMINAL READY (DTR)

Type:

Configuration

Format:

AT [cmds] &Dn [cmds]

Description:

Selects modem response to DTR

&Q Setting

&D0

&D1

&D2

&D3

&Q0, &Q5, &Q6

Command 0

Command 1

Command 2

Command 4

&Q1, &Q4

Command 2

Command 1

Command 2

Command 4

&Q2, &3

Command 2

Command 2

Command 2

Command 2

Command

Function

Command 0

Modem does not respond to DTR

Command 1

Modem goes to command mode after DTR goes is off

Command 2

Modem goes to command mode and disconnects (hangs up) after DTR goes off; Auto-Answer is disabled.

Command 3

Modem is initialized after DTR goes off

DIAL

Type:

Immediate

Format:

AT [cmds] D<#> [cmds]

Description:

Dials telephone number according to any modifiers included in the string

FACTORY DEFAULT PROFILE

Type:

Configuration

Format:

AT [cmds] &F [cmds]

Description:

Sets values in active profile to values found in the default profile

Command

Function

&F0

Load factory configuration 0

&F1

Load factory configuration 1

FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] &Kn [cmds]

Description:

Enables flow control options

Command

Function

&K0

Flow control disabled

&K3

RTS/CTS flow control enabled

&K4

XON/XOFF flow control enabled

&K5

Transparent XON/XOFF flow control enabled

&K6

Unidirectional XON/XOFF flow control enabled

GUARD TONE

Type:

Configuration

Format:

AT [cmds] &Gn [cmds]

Description:

Commands the modem to transmit a guard tone in V.22/V.22bis

Command

Function

&G0

Guard tone disabled

&G1

Guard tone disabled

&G2

1800Hz guard tone enabled

JACK TYPE

Type:

Configuration

Format:

AT [cmds] &Jn [cmds]

Description:

For purposes compatibility only. Performs no function

LINE TYPE

Type:

Configuration

Format:

AT [cmds] &Ln [cmds]

Description:

Selects line type

Command

Line Type

&L0

Switched line (PSTN/Dial-up)

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested

Command

Function

I0

Reports product ID code

I1

Reports ROM checksum

I2

Tests and reports ROM checksum

I3

Reports firmware revision, model, and interface type

I4

Reports OEM identifier string in either binary or ASCII format

I5

Reports country code

I6

Reports data pump model and internal code

SPEAKER VOLUME

Type:

Configuration

Format:

AT [cmds] Ln [cmds]

Description:

Controls speaker volume

Command

Function

L0

Low volume setting

L1

Low volume setting

L2

Medium volume setting

L3

Highest volume setting

TRANSMIT CARRIER

Type:

Configuration

Format:

AT [cmds] Cn [cmds]

Description:

Command non-functional; for compatibility only.

Command

Function

C1

Returns OK

ERROR CORRECTION/COMPRESSION

Type:

Register

Format:

AT [cmds] S46=n [cmds]

Description:

Selects active error correction and compression protocols

Command

Function

S46=136

LAP-M only, no compression

S46=138

LAP-M with V.42bis data compression

FEATURE NEGOTIATION OPTIONS

Type:

Register

Format:

AT [cmds] S48=n [cmds]

Description:

Selects active error correction and compression protocols

Command

Function

S48=0

Detection negotiation disabled, XID negotiation disabled

S48=7

Detection negotiation and XID negotiation enabled

S48=128

Fall-back to options set in S36

BREAK OPTIONS

Type:

Register

Format

AT [cmds] S82=n [cmds]

Description:

Sets the method for break transmission during error-control and ASB connections.

Command

Function

S82=3

Expedited signaling, immediately send timed break

S82=7

Destructive signaling, buffers cleared, immediately send timed break

S82=128

In-sequence signaling, timed break sent in sequence with transmitted data