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MOD531 9600/2400 FAX/DATA

IBM CORPORATION

MOD531 9600/2400 FAX/DATA

Card Type

Fax, Modem (asynchronous/synchronous)

Chip Set

Unidentified

Maximum Data Rate

2400bps

Maximum Fax Rate

9600bps

Data Bus

8-bit ISA

Fax Class

Class I

Data Modulation Protocol

Bell 103/212A

ITU-T V.22, V.22bis

Fax Modulation Protocol

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

CONNECTIONS

Function

Label

Function

Label

Line out

CN1

Line in

CN2

SERIAL PORT ADDRESS

Setting

JP1/A

JP1/B

JP1/C

JP1/D

í 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

Setting

JP1/E

JP1/F

JP1/G

JP1/H

3

Closed

Open

Open

Open

í 4

Open

Closed

Open

Open

5

Open

Open

Closed

Open

7

Open

Open

Open

Closed

Proprietary AT Command Set

BIT-MAPPED REGISTER S14

Format

AT [cmds] S14=n [cmds]

Default:

170

Range:

0-174

Unit:

Bit-mapped

Description:

Controls echo, result codes and display, dial mode, and answer/originate mode.

Bit

Value

Function

0

í 0

Not used

1

0

í 1

Command echo disabled

Command echo enabled

2

í 0

1

Result codes enabled

Result codes disabled

3

0

í 1

Display result codes in numeric format

Display result codes in verbose format

4

í 0

Not used

5

0

í 1

Tone dial enabled

Pulse dial enabled

6

í 0

Not used

7

0

í 1

Answer mode enabled

Originate mode enabled

BIT-MAPPED REGISTER S21

Format

AT [cmds] S21=n [cmds]

Default:

0

Range:

0-253

Unit:

Bit-mapped

Description:

Selects jack type, CTS/DCD/DSR signals, low DTR action, and the long space disconnect function.

Bit

Value

Function

0

í 0

1

Selects RJ-11, RJ-41S, or RJ45S jack

Selects RJ-12 or RJ-13 jack

1

í 0

Not used

2

í 0

1

CTS follows RTS

CTS forced high

4, 3

í 00

01

10

11

DTR signal ignored

Modem goes to command mode on low DTR

Modem disconnects on low DTR; Auto-Answer is disabled.

Modem is initialized on low DTR

5

í 0

1

DCD forced high

DCD normal

6

í 0

1

DSR forced high

DSR normal

7

í 0

1

Long space disconnect function disabled

Long space disconnect function enabled

BIT-MAPPED REGISTER S22

Format

AT [cmds] S22=n [cmds]

Default:

118

Range:

0-127

Unit:

Bit-mapped

Description:

Controls speaker volume and controls, and limits results codes.

Bit

Value

Function

1, 0

00

í 01

10

11

Off volume

Low level volume

Medium level volume

High level volume

3, 2

00

í 01

10

11

Speaker off

Speaker off on carrier

Speaker always on

Speaker on during handshake

6, 5, 4

000

100

101

110

í 111

Basic result codes only enabled

Basic and connection speed result codes enabled

Basic and connection speed result codes and dialtone detection enabled

All result codes except dialtone detection enabled

All result codes enabled

BIT-MAPPED REGISTER S23

Format

AT [cmds] S23=n [cmds]

Default:

7

Range:

0-189

Unit:

Bit-mapped

Description:

Grants/denies remote digital loopback, controls DTE rate and parity, and sets guard tone.

Bit

Value

Function

0

0

í 1

Remote digital loopback denied

Remote digital loopback allowed

3, 2, 1

000

001

010

í 011

100

101

110

Sets serial port speed to 0-300bps

Sets serial port speed to 600bps

Sets serial port speed to 1200bps

Sets serial port speed to 2400bps

Sets serial port speed to 4800bps

Sets serial port speed to 9600bps

Sets serial port speed to 19200bps

5,4

í 00

01

10

11

Parity even

Not used

Parity odd

No Parity

7, 6

í 00

01

10

Guard tone disabled

Guard tone disabled

Guard tone 1800Hz enabled

BIT-MAPPED REGISTER S27

Format

AT [cmds] S27=n [cmds]

Default:

9

Range:

0-109

Unit:

Bit-mapped

Description:

Selects line type, clock source, and ITU-T/Bell modes.

Bit

Value

Function

3, 1, 0

í 101

Not used

2

í 0

1

Switched line

Leased line

5, 4

í 00

01

10

Local modem generates transmit clock source

Local DTE generates transmit clock source

Remote DCE/DTE generates transmit clock source

6

í 0

1

ITU/T mode

Bell mode

BIT-MAPPED REGISTER S28

Format

AT [cmds] S28=n [cmds]

Default:

0

Range:

0-31

Unit:

Bit-mapped

Description:

Controls V.23 split speed, transmit/receive speed, half duplex; and pulse dialing.

Bit

Value

Function

0

í 0

1

V.23 split speed operation disabled

V.23 split speed operation enabled

1

í 0

1

75bps transmit, 1200bps receive enabled

1200bps transmit, 75bps receive disabled

2

í 0

1

1200bps transmit, 1200bps receive disabled

1200bps transmit, 1200bps receive enabled

4, 3

í 00

01

10

11

39ms make/61ms break at 10pps

33ms make/67ms break at 10pps

39ms make/61ms break at 20pps

33ms make/67ms break at 20pps

BIT-MAPPED REGISTER S31

Format:

AT [cmds] S31=n [cmds]

Default:

2

Range:

0-10

Unit:

Bit-mapped

Description:

Controls auto-baud function and result codes

Bit

Value

Function

0

í 0

Not used

1

0

í 1

Auto-baud disabled

Auto-baud enabled

3, 2

í 00

01

10

DTE speed displayed in result codes

Extended result codes enabled; DCE speed displayed in result codes.

DCE speed displayed in result codes

BIT-MAPPED REGISTER S39

Format

AT [cmds] S39=n [cmds]

Default:

3

Range:

0-6

Unit:

Bit-mapped

Description:

Controls flow control

Bit

Value

Function

2, 1, 0

000

í 011

100

101

110

Flow control disabled

Hardware flow control enabled

Normal software flow control enabled

Transparent software flow control enabled

Both hardware and software flow control enabled

BIT-MAPPED REGISTER S40

Format

AT [cmds] S40=n [cmds]

Default:

105

Range:

0-239

Unit:

Bit-mapped

Description:

Controls power level and break handling; selects MNP extended services, link negotiation, and block size.

Bit

Value

Function

0

0

í 1

MNP extended services disabled

MNP extended services enabled

1

í 0

1

Power level adjustment enabled

Power level adjustment disabled

2

í 0

1

Link will be negotiated at highest possible speed

Link will be negotiated at 1200bps

5, 4, 3

000

001

010

011

100

í 101

\K0

\K1

\K2

\K3

\K4

\K5

7, 6

00

í 01

10

11

MNP block size is 64 characters

MNP block size is 128 characters

MNP block size is 192 characters

MNP block size is 256 characters

BIT-MAPPED REGISTER S41

Format

AT [cmds] S41=n [cmds]

Default:

3

Range:

0-31

Unit:

Bit-mapped

Description:

Selects compression, auto-retrain, flow control, and MNP mode.

Bit

Value

Function

1 - 0

00

01

10

í 11

Data compression disabled

MNP5 enabled

V.42bis enabled

MNP5 and V.42bis enabled

2

í 0

1

Auto-retrain disabled

Auto-retrain enabled

3

í 0

1

Flow control disabled

Flow control enabled

4

í 0

1

Stream mode for MNP

Block mode for MNP

DIAL STORED PHONE NUMBER

Type:

Immediate

Format:

AT [cmds] S=n

Description:

Dials a phone number previously stored in AT&Zn

FLOW CONTROL CHARACTER - XOFF

Type:

Register

Format:

AT [cmds] S33=n [cmds]

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]

Default:

17

Range:

0-255

Unit:

ASCII

Description:

Sets the character used to represent XON

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested

Command

Function

I0

Display product identification code

I1

Display ROM checksum

I2

Display OK or ERROR for ROM checksum

I3

Display firmware revision

I4

Display OEM string

I5

Display country code

I6

Display data pump model

I7

Reports manufacturer and model information

SLEEP TIMER

Type:

Register

Format

AT [cmds] S24=n [cmds]

Default:

0

Range:

0-255

Unit:

1 second

Description:

Maximum duration of DTE and DCE inactivity allowed prior to initiating low-power sleep mode.

S-REGISTER - CONTENTS

Type:

Immediate

Format:

AT [cmds] ? [cmds]

Description:

Displays contents of last S-register access

TEST MODES

Type:

Register

Format

AT [cmds] S16=n [cmds]

Default:

128

Range:

0-128

Unit:

Bit-mapped

Description:

Controls loopback tests, analog, digital, remote digital, and self tests.

Bit

Value

Function

0

í 0

1

Local analog loopback not in progress

Local analog loopback in progress

1

í 0

Not used

2

í 0

1

Local digital loopback not in progress

Local digital loopback in progress

3

í 0

1

Modem not in remote digital loopback

Remote digital loopback in progress

4

í 0

1

Remote digital loopback not requested

Remote digital loopback requested

5

í 0

1

Remote digital loopback w/ self-test not in progress

Remote digital loopback w/ self-test in progress

6

í 0

1

Local analog loopback w/ self-test not in progress

Local analog loopback w/ self-test in progress

7

í 1

Not used

TRANSMISSION LEVEL - PSTN

Type

Register

Format

AT [cmds] S91=n [cmds]

Default

10

Range

0-15

Unit

-1 dBm

Description

Sets the signal level for transmission over switched phone lines

TRANSMISSION LEVEL - FAX

Type:

Register

Format:

AT [cmds] S92=n [cmds]

Default:

10

Range:

0-15

Unit:

-1 dBm

Description:

Sets the signal level for transmission while in fax mode