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MC288MT II V.34/PC288MT II V.34

PRACTICAL PERIPHERALS, INC.

MC288MT II V.34/PC288MT II V.34

Modem Type

Data (synchronous/asynchronous)/Fax

Maximum Data Rate

28.8Kbps

Maximum Fax Rate

14.4Kbps

Data Bus

External

Fax Class

Class I & II

Data Modulation Protocol

Bell 103A/212A

ITU-T V.21, V.22, V.22bis, V.32, V.32bis, V.34

Rockwell V.FC

Fax Modulation Protocol

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

Error Correction/Compression

MNP5, V.42, V.42bis

CONNECTIONS

Purpose

Location

Purpose

Location

Line out

CN1

DC power

CN4

Line in

CN2

Power switch

SW1

RS-232/422

CN3

   

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

AA

Red

On

Auto-answer enabled

AA

Red

Off

Auto-answer disabled

AA

Red

Blinking

Phone is ringing

RX

Red

On

Modem is receiving data

RX

Red

Off

Modem is not receiving data

TX

Red

On

Modem is transmitting data

TX

Red

Off

Modem is not transmitting data

CD

Red

On

Carrier signal detected

CD

Red

Off

Carrier signal not detected

CD

Red

Blinking

Modem is retraining

OH

Red

On

Modem is off-hook

OH

Red

Off

Modem is on-hook

HS

Red

On

Modem is operating at 4800bps or faster

HS

Red

Off

Modem is operating at slower than 4800bps

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

COMMAND SET

Type:

Configuration

Format:

AT [cmds] %DUMBn [cmds]

Example:

AT %DUMB1<CR>

Description:

Disables the AT command set.

Note:

The AT command set is always active for the first 20 seconds after the modem is powered up. AT%DUMB0 can be entered during this time period to re-enable the command set.

Command

Function

%DUMB0

Command set enabled.

%DUMB1

Command set disabled.

LAP-M PACKET SIZE

Type:

Immediate

Format:

AT [cmds] S136=n [cmds]

Example:

AT S136=2 %C1<CR>

Description:

Sets the frame size for an LAP-M connection.

Command

Function

S136=0

Select 128 byte frame size.

S136=1

Select 256 byte frame size.

S136=2

Select 512 byte frame size.

REDIAL

Type:

Immediate

Format:

AT [cmds] DL

Example:

AT M1 DL<CR>

Description:

Redials the last number dialed.

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Example:

AT I1 &W<CR>

Description:

Displays modem properties.

Command

Function

I0

Reports modem model and speed.

I1

Reports checksum number.

I2

Reports checksum result.

I3

Reports firmware version.

I4

Reports current command settings.

V.22 PROBE REJECT TIME

Type:

Register

Format:

AT [cmds] S97=n [cmds]

Example:

ATS97=15<CR>

Default:

30

Range:

15-70

Unit:

.1 second

Description:

Sets the time for which the modem will reject the V.22/V.22bis probe signal when in V.32 mode.