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LAPTALK PLUS 14.4K

OSITECH COMMUNICATIONS, INC.

LAPTALK PLUS 14.4K

Modem Type

Data (synchronous/asynchronous)/Fax

Maximum Data Rate

14.4Kbps

Maximum Fax Rate

14.4Kbps

Data Bus

Compaq portable bus

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

Error Correction/Compression

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

CONNECTIONS

Purpose

Location

Purpose

Location

Line in

CN1

Compaq portable bus

CN3

Daughterboard connector for network

CN2

   

Proprietary AT Command Set

BIT-MAPPED REGISTERS

Register

Default

S14

138

S16

0

S21

4

S22

118

S23

55

S27

9

S28

0

S31

194

S39

3

S40

107

S41

03

BREAK SEND

Type:

Configuration

Format:

AT [cmds] \Bn [cmds]

Example:

AT \B3 &W<CR>

Default:

3

Range:

0-9

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

Break from DTE while in command mode

Break from remote modem

í \K0

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

Buffers cleared and break sent to remote modem.

Buffers cleared and break sent to DTE.

í \K1

Buffers cleared and break sent to remote modem.

Buffers cleared and break sent to remote modem.

Buffers cleared and break sent to DTE.

í \K2

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

Send break to remote modem immediately.

Send break to DTE immediately.

í \K3

Send break to remote modem immediately.

Send break to remote modem immediately.

Send break to DTE immediately.

í \K4

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

Send break to remote modem with transmitted data.

Send break to remote modem with transmitted data.

\K5

Send break with transmitted data.

Send break to remote modem with transmitted data.

Send break to remote modem with transmitted data.

COMPRESSION

Type:

Configuration

Format:

AT %Cn

Example:

AT %C1 &B0<CR>

Description:

Selects data compression.

í Command

Function

í %C0

Data compression disabled.

í %C1

MNP5 enabled.

í %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.

í Command

Function

í \N0

Normal mode enabled.

í \N1

Direct mode enabled.

í \N2

Reliable mode enabled.

\N3

Auto-reliable mode enabled.

í \N4

LAPM mode enabled.

í \N5

MNP mode enabled.

FALL FORWARD/ADJUST TRANSMIT LEVEL

Type:

Configuration

Format:

AT [cmds] -Un [cmds]

Example:

AT -U1 &W<CR>

Description:

Forces a fall forward and change in transmit level during fall forward

í Command

Function

-U0

Automatic attenuation to -10dBm

-U1

Automatic attenuation down to -18dBm

-U2

Automatic attenuation down to22dBm

-U3

automatic attenuation down to -25dBm

-U4

At 2400bps, force transmit level to -10 dBm

-U5

At 2400bps, force transmit level to -18 dBm

-U6

At 2400bps, force transmit level to -22 dBm

-U7

At 2400bps, force transmit level to -25 dBm

FALLBACK

Type:

Immediate

Format:

AT [cmds] -B [cmds]

Example:

AT -B &W<CR>

Description:

Forces fallback to 1200bps at -10dBm

FLOW CONTROL CHARACTER - XOFF

Type:

Register

Format:

AT [cmds] S33=n [cmds]

Example:

ATS33=20<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=20<CR>

Default:

17

Range:

0-255

Unit:

ASCII

Description:

Sets the character used to represent XON.

LEASED LINE TRANSMISSION LEVEL

Type:

Configuration

Format:

AT [cmds] S99=n [cmds]

Example:

AT S99=8<CR>

Default:

10

Range:

0 to 15

Unit:

-1 dBm

Description:

Sets the signal level for transmission when in leased-line mode.

LINE SIGNAL LEVEL

Type:

Immediate

Format:

AT [cmds] %L [cmds]

Example:

AT %L &W<CR>

Range:

9-43

Unit:

-1dB

Description:

Returns received line signal level.

MNP10 COMPRESSION

Type:

Configuration

Format:

AT [cmds] -Kn [cmds]

Example:

AT %C1 -K1 <CR>

Description:

Selects MNP10 data compression.

í Command

Function

í -K0

MNP10 disabled.

-K1

MNP10 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.

í Command

Function

*H0

Link will be negotiated at highest possible speed.

í *H1

Link will be negotiated at 1200bps.

MNP10 POWER LEVEL ADJUST

Type:

Configuration

Format:

AT [cmds] )Mn [cmds]

Example:

AT )M1 %C1<CR>

Description:

Controls automatic transmit power level adjustment during MNP 10 link negotiation.

í Command

Function

)M0

Power level adjustment disabled.

í )M1

Power level adjustment enabled.

PROTOCOL/SPEED

Format

AT [cmds] S37=n [cmds]

Example:

ATS37=11<CR>

Default:

0

Range:

0-21

Unit:

Bit-mapped.

Description:

Selects protocol and line speed.

í Command

Function

S37=0

Auto-select fastest common protocol.

S37=1

Connect at 300bps

S37=2

Connect at 300bps

S37=3

Connect at 300bps.

S37=4

Not used.

S37=5

Connect at 1200bps V.22.

S37=6

Connect at 2400bps.V.22bis

S37=7

Connect at 75/1200bps.V.32

S37=8

Connect at 4800bps V.32bis/V.32.

S37=9

Connect at 9600bps V.32bis/V.32

S37=10

Connect at 12Kbps V.32bis

S37=11

Connect at 14.4Kbps V.32bis

S37=12

Connect at V.32bis 7200bps

REPORT SIGNAL QUALITY

Type:

Configuration

Format:

AT [cmds] %Q [cmds]

Example:

AT %Q &W<CR>

Description:

Reports signal quality.

SLEEP TIMER

Format

AT [cmds] S24=n [cmds]

Example:

ATS24=40<CR>

Default:

1

Range:

0 - 255

Unit:

10 second

Description:

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