...because we can't all be on the bleeding edge...





US ROBOTICS 14,400/PC, US ROBOTICS 14,400/PC FAX

3COM CORPORATION

US ROBOTICS 14,400/PC, US ROBOTICS 14,400/PC FAX

Card Type

Modem (asynchronous)

Chipset

U.S. Robotics

Maximum Data Rate

14.4Kbps

Maximum Fax Rate

14.4Kbps (fax model only)

Data Modulation

Bell 103A/212A

ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis

Fax Modulation

ITU-T V.17, V.21CH2, V.27ter, V.29 (fax model only)

Error Correction/Compression

MNP5, V.42, V.42bis

Fax Class

Class I (fax model only)

Data Bus

8-bit ISA

Card Size

Full height, one-third length

CONNECTIONS

Function

Label

Function

Label

Telephone line out

CN1

Telephone line in

CN2

USER CONFIGURABLE SETTINGS

Setting

Label

Position

í DTR normal

SW1/1

Off

DTR forced high

SW1/1

On

í Modem sends verbose result codes

SW1/2

Off

Modem sends numeric result codes

SW1/2

On

í Result codes enabled

SW1/3

On

Result codes disabled

SW1/3

Off

í Command mode echo enabled

SW1/4

Off

Command mode echo enabled

SW1/4

On

í Auto-answer disabled

SW1/5

On

Auto-answer controlled by S0

SW1/5

Off

í DCD normal

SW1/6

Off

DCD forced high

SW1/6

On

USER CONFIGURABLE SETTINGS (CON'T)

Setting

Label

Position

í Load settings from profile specified by Y command

SW1/7

Off

Load settings from factory defaults

SW1/7

On

í Command set enabled

SW1/8

On

Command set disabled

SW1/8

Off

SERIAL PORT ADDRESS SELECTION

Setting

JP1/A

JP1/B

JP1/C

JP1/D

3F8h (COM1:)

Closed

Open

Open

Open

2E8h (COM2:)

Open

Closed

Open

Open

3F8h (COM3:)

Open

Open

Closed

Open

2E8h (COM4:)

Open

Open

Open

Closed

INTERRUPT SELECTION

Setting

JP2/A

JP2/B

JP2/C

JP2/D

JP2/E

2

Closed

Open

Open

Open

Open

3

Open

Closed

Open

Open

Open

4

Open

Open

Closed

Open

Open

5

Open

Open

Open

Closed

Open

7

Open

Open

Open

Open

Closed

SUPPORTED STANDARD COMMANDS

Basic AT Commands

+++, ‘comma’, A/

A, B, D, E, H, L, M, O, V, X, Z

&C, &D, &F, &G, &P, &R, &S, &T, &W, &Z

S-Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S38

Note: See MHI help file for complete information.

Proprietary AT Command Set

BIT-MAPPED REGISTER S13

Format

AT [cmds] S13=n [cmds]

Default:

0

Range:

0 - 89

Description:

Controls DTR reset, DTR dialing, reset dialing, and MNP3.

Bit

Value

Function

0

í 0

1

DTR normal.

Reset on low DTR.

2, 1

00

Not used.

3

í 0

1

DTR dialing disabled.

DTR dialing enabled.

4

í 0

1

Reset dialing disabled.

Reset dialing enabled.

5

0

Not used.

6

í 0

1

MNP 3 enabled.

MNP 3 disabled.

BIT-MAPPED REGISTER S15

Format:

AT [cmds] S15=n [cmds]

Default:

0

Range:

0 - 56

Description:

Controls non-error-correcting mode buffer, MNP4, and BS/DEL switch.

Bit

Value

Function

2 - 0

000

Not used.

3

í 0

1

Non-error-correcting mode transmit buffer set to 1.5KB.

Non-error-correcting mode transmit buffer set to 128 bytes.

4

í 0

1

MNP 4 enabled.

MNP 4 disabled.

5

í 0

1

Backspace and delete keys normal.

Backspace and delete keys reversed.

BIT-MAPPED REGISTER S27

Format:

AT [cmds] S27=n [cmds]

Default:

0

Range:

0 - 191

Description:

Controls V.21, V.32 encoding and modulation, V.42 answer tone and handshake, and 9600 result codes.

Bit

Value

Function

0

í 0

1

V.21 disabled.

V.21 enabled.

1

í 0

1

V.32 trellis coding enabled.

V.32 trellis coding disabled.

2

í 0

1

V.32 modulation enabled.

V.32 modulation disabled.

3

í 0

1

2100Hz answer tone enabled.

2100Hz answer tone disabled.

5, 4

í 00

01

10

11

V.42 detect, LAPM and MNP enabled.

V.42 detect and LAPM enabled.

MNP enabled.

LAPM enabled.

6

0

Not used.

7

í 0

1

Actual result codes displayed.

Force 9600 result codes.

BREAK LENGTH

Type:

Register

Format:

AT [cmds] S21=n [cmds]

Default:

10

Range:

0 - 255

Unit:

10 ms

Description:

Sets the length of error control mode breaks sent from DCE to DTE.

BREAK TYPE

Type:

Configuration

Format:

AT [cmds] &Yn [cmds]

Description:

Configures action of break signal.

Command

Function

&Y0

Break empties buffer.

í &Y1

Break empties buffer and is sent immediately.

&Y2

Break does not empty buffer and is sent immediately.

&Y3

Break does not empty buffer and is sent in sequence with data.

COMPRESSION MODE

Type:

Configuration

Format:

AT [cmds] &Kn [cmds]

Description:

Selects the type of data compression that will be used.

Command

Function

&K0

Data compression disabled.

í &K1

Auto-detect compression mode.

&K2

Data compression enabled.

&K3

MNP5 data compression only enabled.

CONNECTION SPEED LOWER LIMIT

Type:

Configuration

Format:

AT [cmds] &Un [cmds]

Description:

Sets slowest allowed connection speed if &N is set to 1 or higher.

Command

Function

&U0

No minimum connect speed.

&U1

Set minimum connect speed to 300bps.

&U2

Set minimum connect speed to 1200bps.

&U3

Set minimum connect speed to 2400bps.

&U4

Set minimum connect speed to 4800bps.

&U5

Set minimum connect speed to 7200bps.

&U6

Set minimum connect speed to 9600bps.

&U7

Set minimum connect speed to 12Kbps.

&U8

Set minimum connect speed to 14.4Kbps.

CONNECTION SPEED UPPER LIMIT

Type:

Configuration

Format:

AT [cmds] &Nn [cmds]

Description:

Sets required connection speed if &U is set to 0; otherwise, sets fastest allowed connection speed.

Command

Function

&N0

No maximum connect speed.

&N1

Set maximum connect speed to 300bps.

&N2

Set maximum connect speed to 1200bps.

&N3

Set maximum connect speed to 2400bps.

&N4

Set maximum connect speed to 4800bps.

&N5

Set maximum connect speed to 7200bps.

&N6

Set maximum connect speed to 9600bps.

&N7

Set maximum connect speed to 12Kbps.

&N8

Set maximum connect speed to 14.4Kbps.

DISPLAY INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays modem properties.

Command

Function

I0

Displays product identification code.

I1

Tests and displays ROM checksum result.

I2

Tests and displays RAM checksum result.

I4

Displays current command settings.

I5

Displays current NVRAM settings.

I6

Displays current connection’s statistics.

I7

Displays product configuration.

ERROR CORRECTION MODE

Type:

Configuration

Format:

AT [cmds] &Mn [cmds]

Description:

Selects active error correction protocols.

Command

Function

&M0

Normal mode only.

í &M4

Auto-detect mode.

&M5

ARQ mode only.

ESCAPE CHARACTER RESPONSE

Type:

Register

Format:

AT [cmds] S14=n [cmds]

Description:

Controls reaction to escape character.

Command

Function

S14=0

Normal operation.

S14=1

When +++ is received, modem disconnects and enters command state.

EXTENDED RESULT CODES

Type:

Configuration

Format:

AT [cmds] &An [cmds]

Description:

Selects extended result codes.

Command

Function

&A0

Extended result codes disabled.

&A1

ARQ result codes enabled.

&A2

V.32 result code enabled.

í &A3

Error control and compression result codes enabled.

FLOW CONTROL CHARACTER - XOFF

Type:

Register

Format:

AT [cmds] S23=n [cmds]

Default:

19

Range:

0 - 127

Unit:

1 ASCII character

Description:

Sets the character used to represent XOFF.

FLOW CONTROL CHARACTER - XON

Type:

Register

Format:

AT [cmds] S22=n [cmds]

Default:

17

Range:

0 - 127

Unit:

1 ASCII character

Description:

Sets the character used to represent XON.

FLOW CONTROL - MODEM-TO-MODEM

Type:

Configuration

Format:

AT [cmds] &In [cmds]

Description:

Selects the type of modem-to-modem flow control used.

Command

Function

í &I0

Software flow control disabled.

&I1

XON/XOFF pass-through enabled.

&I2

XON/XOFF pass-through disabled.

&I3

Hewlett-Packard ENQ/ACK host mode enabled.

&I4

Hewlett-Packard ENQ/ACK terminal mode enabled.

&I5

XON/XOFF pass-through enabled in normal mode and disabled in error-correcting mode.

FLOW CONTROL TYPE

Type:

Configuration

Format:

AT [cmds] &Hn [cmds]

Description:

Sets type of flow control used by modem.

Command

Function

&H0

Flow control disabled.

í &H1

CTS/RTS flow control enabled.

&H2

XON/XOFF flow control enabled.

&H3

CTS/RTS and XON/XOFF flow control enabled.

INACTIVITY TIMER

Type:

Register

Format:

AT [cmds] S19=n [cmds]

Default:

0

Range:

0 - 255

Unit:

1 minute

Description:

Sets the length of time that the modem does not receive information before it disconnects; S19=0 will disable.

LOCK SERIAL PORT

Type:

Configuration

Format:

AT [cmds] &Bn [cmds]

Description:

Sets operation of serial port speed.

Command

Function

&B0

Serial speed follows connect speed.

&B1

Serial speed locked.

í &B2

Serial speed locked in ARQ mode only.

PROFILE ON POWER-UP

Type:

Configuration

Format:

AT [cmds] Yn [cmds]

Description:

Selects the profile to restore into the active profile on power-up.

Command

Function

í Y0

Restore profile 0 on power-up.

Y1

Restore profile 1 on power-up.

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.

TONE DIALING TEST

Type:

Register

Format:

AT [cmds] S16=n [cmds]

Description:

Begins a tone dialing test.

Command

Function

í S16=0

Tone dialing test disabled.

S16=2

Tone dialing test enabled.

V.32 AND V.32bis MODULATIONS

Type:

Register

Format:

AT [cmds] S34=n [cmds]

Default:

6

Range:

0 - 15

Description:

Controls V.32 and V.32bis modulations.

Bit

Value

Function

0

í 0

1

V.32bis enabled.

V.32bis disabled.

2, 1

11

Not used.

3

í 0

1

V.32 modulation disabled.

V.32 modulation enabled.

V.32 HANDSHAKE TIME

Type:

Register

Format:

AT [cmds] S28=n [cmds]

Default:

8

Range:

0 - 255

Unit:

.1 second

Description:

Sets length of V.32 handshake.