VEN-TEL, INC.

PCMCIA144FAX

Modem Type

Data (synchronous/asynchronous)/Fax

Maximum Data Rate

14.4Kbps

Maximum Fax Rate

14.4Kbps

Data Bus

PCMCIA Type II

Fax Class

Class I & II

Data Modulation Protocol

Bell 103A/212A

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

Fax Modulation Protocol

ITU-T V.17, V.27, V.29

Error Correction/Compression

MNP5, MNP10, V.42, V.42bis

Proprietary Command Set

V1175

ABORT DIALING

Type:

Register

Format:

AT [cmds] S64=n [cmds]

Example:

AT S64=1<CR>

Description:

Selects whether dialing and handshaking sequences can be interrupted.

Command

Function

S64=0

Dialing and handshaking are aborted on receipt of a character from the serial port.

S64=1

Characters received from the serial port during dialing and handshaking are ignored.

BIT-MAPPED REGISTER S14

Format

AT [cmds] S14=n [cmds]

Example:

ATS14=139<CR>

Default:

Unidentified

Range:

0 - 255

Unit:

Bit-mapped

Description:

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

Bit

Value

Function

0

1

Not used.

1

0

1

Command echo function disabled.

Command echo function enabled.

2

0

1

Result code sending enabled.

Result code sending disabled.

3

0

1

Numeric format enabled.

Verbose format enabled.

4

0

Not used.

5

0

1

Tone dialing mode enabled.

Pulse dialing mode enabled.

6

0

1

Result codes normal.

Result codes disabled in answer mode.

7

0

1

Answer mode enabled.

Originate mode enabled.

BIT-MAPPED REGISTER S21

Format

AT [cmds] S21=n [cmds]

Example:

ATS21=1<CR>

Default:

Unidentified

Range:

0 - 255

Unit:

Bit-mapped

Description:

Controls stored profile DTR action, DCD signal, and the Long Space Disconnect function.

Bit

Value

Function

0

0

Not used.

1

0

1

Use stored profile 0.

Use stored profile 1.

4, 3, 2

000

001

010

011

100

DTR signal forced high.

Modem goes to command mode on low DTR.

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

Modem is initialized on low DTR.

Modem dials default number on low DTR.

6, 5

00

01

10

DCD signal forced high.

DCD signal normal.

DCD signal forced high except during disconnect.

7

0

1

Long Space Disconnect function disabled.

Long Space Disconnect function enabled.

BIT-MAPPED REGISTER S22

Format

AT [cmds] S22=n [cmds]

Example:

ATS22=114<CR>

Default:

Unidentified

Range:

0 - 255

Unit:

Bit-mapped

Description:

Controls volume and speaker settings, result codes, and make/break pulse ratio.

Bit

Value

Function

1, 0

00

01

10

11

Lowest volume setting.

Low volume setting.

Medium volume setting

Highest volume setting.

3, 2

00

01

10

11

Speaker disabled.

Speaker enabled until carrier signal detected

Speaker enabled.

Speaker enabled following dialing, then disabled after carrier signal detected.

6, 5 ,4

000

100

101

110

111

Busy and dialtone detection disabled, result codes 0-4 enabled.

Busy and dialtone detection disabled, result codes 0-5, 10 enabled.

Busy tone detection disabled, dialtone detection enabled, result codes 0-6, 10 enabled.

Busy tone detection enabled, dialtone detection disabled, result codes 0-5, 7, 10 enabled.

Busy and dialtone detection enabled, result codes 0-7, 10 enabled.

7

0

Not used.

BIT-MAPPED REGISTER S23

Format

AT [cmds] S23=n [cmds]

Example:

ATS23=114<CR>

Default:

0, read-only (see note)

Range:

0 - 255

Unit:

Bit-mapped

Description:

Controls guard tones. Also indicates detected serial port speed and parity. Also provides storage for remote digital loopback tests.

Note:

All bits except bits 6 and 7 are read-only.

Bit

Value

Function

0

N/A

Reserved for internal use.

3, 2, 1

000

001

010

011

100

101

110

111

Local speed detected at 300bps.

Local speed detected at 600bps.

Local speed detected at 1200bps.

Local speed detected at 2400bps.

Local speed detected at 4800bps.

Local speed detected at 9600bps.

Local speed detected at 19200bps.

Local speed detected at 38400bps.

5, 4

00

10

11

Even parity.

Odd parity.

No parity.

7, 6

00

01

10

Guard tone disabled.

550Hz guard tone enabled.

1800Hz guard tone enabled.

BIT-MAPPED REGISTER S27

Format

AT [cmds] S27=n [cmds]

Example:

ATS27=201<CR>

Default:

Unidentified

Range:

0 - 255

Unit:

Bit-mapped

Description:

Controls communications mode, line type, and protocol type.

Note:

Be aware that bits 2 and 3 are out of order.

Bit

Value

Function

3, 1, 0

000

001

101

110

Asynchronous mode, serial port speed follows connect speed.

Asynchronous off-line command mode and synchronous connect mode.

Error-correcting mode.

Asynchronous mode, serial port speed locked.

2

0

Not used.

4

0

Not used.

5

0

Not used.

6

0

1

Select CCITT protocols.

Select Bell protocols.

7

0

1

DSR forced high.

DSR normal.

COMPRESSION

Type:

Register

Format:

AT [cmds] S41=n [cmds]

Example:

AT S41=1<CR>

Description:

Selects data compression.

Command

Function

S41=0

Data compression disabled.

S41=1

MNP data compression enabled.

S41=2

V.42bis data compression enabled.

S41=3

MNP and V.42bis data compression enabled.

COMPRESSION MODE

Type:

Configuration

Format:

AT %Cn

Example:

AT %C1 -K1 -Q0 <CR>

Description:

Selects active compression protocols.

Command

Function

%C0

Compression disabled.

%C1

MNP compression only enabled.

%C2

V.42bis compression only enabled.

%C3

MNP and V.42bis compression enabled.

DIAL

Type:

Immediate

Format:

AT [cmds] D<#> [; cmds]

Example:

AT D 9W 1-800-555-2345^,,2554#; ATE1<CR>

Description:

Dials telephone number according to any modifiers included in the string..

Command

Function

L

Redial last number dialed.

^

Transmit calling tone.

FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] \Gn [cmds]

Example:

AT \G1 &K3<CR>

Description:

Selects flow control.

Command

Function

\G0

Flow control disabled.

\G1

Flow control enabled.

LOOPBACK TESTS

Format

AT [cmds] S16=n [cmds]

Example:

ATS16=32<CR>

Default:

Unidentified

Range:

0 - 255

Unit:

Bit-mapped

Description:

Enables loopback tests.

Note:

Bit 3 is read-only.

Bit

Value

Function

0

0

1

Local analog loopback test disabled.

Local analog loopback test enabled.

1

0

Not used.

2

0

1

Local digital loopback test disabled.

Local digital loopback test enabled.

3

0

1

Modem is not performing remote digital loopback test.

Modem is performing remote digital loopback test.

4

0

1

Remote digital loopback test disabled.

Remote digital loopback test enabled.

5

0

1

Remote digital loopback with local self-test disabled.

Remote digital loopback with local self-test enabled.

6

0

1

Local analog loopback with local self-test disabled.

Local analog loopback with local self-test enabled.

7

0

Not used.

MNP10 COMPRESSION

Type:

Configuration

Format:

AT [cmds] -Kn [cmds]

Example:

AT %C1 -K1 -Q0 <CR>

Description:

Selects MNP10 data compression.

Command

Function

-K0

MNP10 disabled.

-K1

MNP10 enabled.

-K2

MNP10 enabled after V.42 answer mode detection.

MNP10 FALL-BACK

Type:

Configuration

Format:

AT [cmds] -Qn [cmds]

Example:

AT *H0 -Q1 <CR>

Description:

Allows MNP10 to fall back to speeds slower than 4800bps.

Command

Function

-Q0

MNP10 at 2400 and 1200bps disabled.

-Q1

MNP10 at 2400 and 1200bps enabled.

MNP10 LINK NEGOTIATION

Type:

Configuration

Format:

AT [cmds] *Hn [cmds]

Example:

AT *H0 -Q1 <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.

*H2

Link will be negotiated at 4800bps.