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BOCAMODEM M144IW

BOCA RESEARCH, INC.

BOCAMODEM M144IW

Modem Type

Data (synchronous/asynchronous)/Fax

Maximum Data Rate

14.4Kbps

Maximum Fax Rate

9600bps

Data Bus

8-bit ISA

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.21CH2, V.27ter, V.29

Error Correction/Compression

MNP5, V.42, V.42bis

CONNECTIONS

Purpose

Location

Purpose

Location

Line out

CN1

Line in

CN2

BASE I/O ADDRESS SELECTION

Port

JP1/A

JP1/B

JP1/C

JP1/D

COM1: (3F8h)

Closed

Open

Open

Open

COM2: (2F8h)

Open

Closed

Open

Open

COM3: (3E8h)

Open

Open

Closed

Open

COM4: (2E8h)

Open

Open

Open

Closed

INTERRUPT SELECTION

IRQ

JP1/E

JP1/F

JP1/G

JP1/H

3

Closed

Open

Open

Open

4

Open

Closed

Open

Open

5

Open

Open

Closed

Open

7

Open

Open

Open

Closed

Proprietary AT Command Set

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

Registers

Default

S14

170

S21

0

S22

117

S23

7

S27

9

S28

Unidentified

S31

Unidentified

S39

Unidentified

S40

Unidentified

S41

Unidentified

BREAK SEND

Type:

Configuration

Format:

AT [cmds] \Bn [cmds]

Example:

AT \B3<CR>

Default:

3

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

MNP/Normal mode

Break from DTE

Direct mode

Break from remote modem

\K0

Enter command mode, do not send break to remote modem.

Send break to remote modem immediately, then enter command mode.

Buffers cleared and break sent to DTE.

\K1

Buffers cleared and break sent to remote modem.

Send break to remote modem immediately, then enter command mode.

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, then enter command mode.

Send break to DTE immediately.

\K4

Enter command mode, do not send break to remote modem.

Send break to remote modem immediately.

Break sent with received data to the DTE.

\K5

Send break with transmitted data.

Send break to remote modem immediately.

Break sent with received data to the DTE.

COMPRESSION

Type:

Configuration

Format:

AT [cmd] %Cn [cmd]

Example:

AT \N2 %C1 \K5<CR>

Description:

Selects data compression.

Command

Function

%C0

Data compression disabled.

%C1

MNP5 enabled.

%C2

V.42bis enabled.

%C3

MNP5 and V.42bis 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, MNP mode with fallback to Normal mode.

\N4

LAPM error-correction mode enabled.

\N5

MNP error-correction mode enabled.

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.

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.

FLOW CONTROL CHARACTER - XOFF

Type:

Register

Format:

AT [cmds] S33=n [cmds]

Example:

ATS33=19<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=17<CR>

Default:

17

Range:

0-255

Unit:

ASCII

Description:

Sets the character used to represent XON.

LINE SIGNAL LEVEL

Type:

Configuration

Format:

AT [cmds] %L [cmds]

Example:

AT %L &W<CR>

Default:

Unidentified

Range:

9-43

Unit:

-1 dBm

Description:

Returns received line signal level.

MAXIMUM BLOCK SIZE FOR TRANSMISSION

Type:

Configuration

Format:

AT [cmds] \An [cmds]

Example:

AT \A1 %C1<CR>

Description:

Sets the maximum transmittable block size.

Command

Function

\A0

MNP block size is 64 characters.

\A1

MNP block size is 128 characters.

\A2

MNP block size is 192 characters.

\A3

MNP block size is 256 characters.

MNP STREAM/BLOCK MODE

Type:

Configuration

Format:

AT [cmds] \Ln [cmds]

Example:

AT \L1 DT555-1212<CR>

Description:

Selects the transfer mode for MNP.

Command

Function

\L0

Stream mode for MNP enabled.

\L1

Block mode for MNP enabled.

MNP10 LINK NEGOTIATION

Type:

Configuration

Format:

AT [cmds] *Hn [cmds]

Example:

AT *H0 \W1 <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.

PSTN TRANSMIT LEVEL

Type:

Register

Format:

AT [cmds] S91=n [cmds]

Example:

ATS91=10<CR>

Default:

10

Range:

1-15

Unit:

-1dBm

Description:

Controls PSTN transmission level.

REPORT SIGNAL QUALITY

Type:

Configuration

Format:

AT [cmds] %Q [cmds]

Example:

AT %Q &W<CR>

Range:

0-255

Description:

Reports signal quality.

Note: A value of 8 or greater retrain enabled, only when %E1 is enabled.

SLEEP TIMER

Format

AT [cmds] S24=n [cmds]

Example:

ATS24=0<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.

TEST MODES

Format

AT [cmds] S16=n [cmds]

Example:

ATS16=128<CR>

Default:

128

Range:

0 - 255

Unit:

Bit-mapped

Description:

Select type of loopback test.

Bit

Value

Function

0

0

1

Local analog loopback test not in progress.

Local analog loopback test in progress.

1

0

1

Remote analog loopback test not in progress.

Remote analog loopback test in progress.

2

0

1

Local digital loopback test not in progress.

Local digital loopback test in progress.

3

0

1

Remotely requested remote digital loopback test not in progress.

Remotely requested remote digital loopback test in progress.

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 not in progress.

Remote digital loopback with local self-test in progress.

6

0

1

Local analog loopback with local self-test not in progress.

Local analog loopback with local self-test in progress.

7

0

1

Remote analog loopback with local self-test not in progress.

Remote analog loopback with local self-test in progress.

V.23 DIRECTION CONTROL

Type:

Configuration

Format:

AT [cmds] %Fn [cmds]

Example:

AT %F1 &W<CR>

Description:

Controls the direction of transmit/receive 75/1200bps, only when \W1 is selected.

Command

Function

%F0

75bps transmit/1200bps receive enabled.

%F1

1200bps transmit/75bps receive enabled.

V.23 SPLIT BAUD MODE

Type:

Configuration

Format:

AT [cmds] \Wn [cmds]

Example:

AT \W1 <CR>

Description:

Controls V.23 split baud mode.

Command

Function

\W0

V.23 split baud mode disabled.

\W1

V.23 split baud mode enabled.