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SUPER MODEM 2400 (EXT.)

BOCA RESEARCH, INC.

SUPER MODEM 2400 (EXT.)

Modem Type

Data (synchronous/asynchronous)

Maximum Data Rate

2400bps

Data Bus

External

Data Modulation Protocol

Bell 103A/212A

ITU-T V.21, V.22, V.22bis

CONNECTIONS

Purpose

Location

Purpose

Location

Line out

CN1

DC power

CN4

Line in

CN2

Power switch

SW1

RS-232/422

CN3

   

SMART/DUMB MODE

Setting

JP1

» Smart mode

Closed

Dumb mode

Open

Note: Manufacturer’s documentation does not specify pin assignments corresponding to dumb/smart mode settings.

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

HS

Red

On

Modem connected at 2400bps

HS

Red

Off

Modem not connected at 2400bps

AA

Red

On

Auto-answer enabled

AA

Red

Off

Auto-answer disabled

AA

Red

Blinking

Phone is ringing

CD

Red

On

Carrier signal detected

CD

Red

Off

Carrier signal not detected

OH

Red

On

Modem is off-hook

OH

Red

Off

Modem is on-hook

RD

Red

On

Modem is receiving data

RD

Red

Off

Modem is not receiving data

SD

Red

On

Modem is transmitting data

SD

Red

Off

Modem is not transmitting data

TR

Red

On

DTR signal is high

TR

Red

Off

DTR signal is low

MR

Red

On

Power is on

MR

Red

Off

Power is off

Proprietary AT Command Set

BIT-MAPPED REGISTER S14

Format

AT [cmds] S14=n [cmds]

Example:

ATS14=138<CR>

Default:

138

Range:

0-190

Unit:

Bit-mapped

Description:

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

Bit

Value

Function

0

0

Not used.

1

0

» 1

Command echo disabled.

Command echo enabled.

2

» 0

1

Result codes enabled.

Result codes disabled.

3

0

» 1

Display result codes in numeric format.

Display result codes in verbose format.

4

» 0

1

Smart mode.

Dumb mode

5

» 0

1

Tone dial enabled.

Pulse dial enabled.

6

0

Not used.

7

0

» 1

Answer mode enabled.

Originate mode enabled.

Note: Bit 4 is not used, in the Internal Super Modem 2400.

BIT-MAPPED REGISTER S21

Format

AT [cmds] S21=n [cmds]

Example:

ATS21=56<CR>

Default:

56

Range:

0 - 189

Unit:

Bit-mapped

Description:

Selects jack type, CTS signal, low DTR action, DCD signal, and the Long Space Disconnect function.

Bit

Value

Function

0

» 0

1

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

Selects RJ-12 or RJ-13 jack.

1

0

Not used.

2

» 0

1

CTS follows RTS.

CTS forced high.

4, 3

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

0

» 1

DCD forced high.

DCD normal.

6

0

Not used.

7

» 0

1

Long Space Disconnect function disabled.

Long Space Disconnect function enabled.

Note: Bit 2 is not used, in the Internal Super Modem 2400.

BIT-MAPPED REGISTER S22

Format

AT [cmds] S22=n [cmds]

Example:

ATS22=5<CR>

Default:

5

Range:

0-126

Unit:

Bit-mapped

Description:

Controls speaker volume and controls, and limits results codes.

Bit

Value

Function

1, 0

01

» 10

11

On volume.

Medium level volume.

High level volume.

3, 2

00

» 01

10

11

Speaker off.

Speaker off on carrier.

Speaker always on.

Speaker on during handshake.

6, 5, 4

» 000

100

101

110

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.

7

» 0

1

39/61ms at 10pps (North America)

33/67ms at 10pps (Europe)

BIT-MAPPED REGISTER S23

Format

AT [cmds] S23=n [cmds]

Example:

ATS23=54<CR>

Default:

54

Range:

0-183

Unit:

Bit-mapped

Description:

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

Bit

Value

Function

0

» 0

1

Remote digital loopback denied.

Remote digital loopback allowed.

2, 1

00

10

» 11

Sets serial port speed to 0-300bps.

Sets serial port speed to 1200bps.

Sets serial port speed to 2400bps.

3

0

Not used.

5,4

00

01

10

» 11

Parity even.

Space parity.

Parity odd.

No Parity.

7, 6

» 00

01

10

Guard tone disabled.

Guard tone disabled.

Guard tone 1800Hz enabled.

BIT-MAPPED REGISTER S27

Format

AT [cmds] S27=n [cmds]

Example:

AT S27=64 <CR>

Default:

64

Range:

0 - 103

Unit:

Bit-mapped

Description:

Selects sync/async mode, Line type, internal clock, and ITU-T/Bell modes.

Bit

Value

Function

1, 0

» 00

01

10

11

Asynchronous mode.

Synchronous command mode and synchronous connect mode.

Synchronous command mode and synchronous connect mode, DTR dialing enabled.

Manual originating a synchronous call.

2

» 0

1

Dial up line.

Leased line.

3

0

Not used.

5, 4

» 00

01

10

Internal DTE transmit clock source.

External DTE transmit clock source.

Slave DTE transmit clock source.

6

0

» 1

CCITT mode.

Bell mode.

TEST MODES

Format

AT [cmds] S16=n [cmds]

Example:

ATS16=0<CR>

Default:

0

Range:

0-125

Unit:

Bit-mapped

Description:

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

Bit

Value

Function

0

» 0

1

Local analog loopback not in progress.

Local analog loopback in progress.

1

0

Not used.

2

» 0

1

Local digital loopback not in progress.

Local digital loopback in progress.

3

» 0

1

Modem not in remote digital loopback.

Remote digital loopback in progress.

4

» 0

1

Remote digital loopback not requested.

Remote digital loopback requested.

5

» 0

1

Remote digital loopback w/ self-test not in progress.

Remote digital loopback w/ self-test in progress.

6

» 0

1

Local analog loopback w/ self-test not in progress.

Local analog loopback w/ self-test in progress.