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





PC288LCD V.FAST, MC288LCD V.FAST

PRACTICAL PERIPHERALS, INC.

PC288LCD V.FAST, MC288LCD V.FAST

Card Type

Modem (asynchronous)

Chip Set

Unidentified

Maximum Modem Rate

28.8Kbps

Maximum Fax Rate

14.4Kbps

Data Modulation Protocol

Bell 103/212A

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

Fax Modulation Protocol

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

Error Correction/Compression

MNP5, V.42, V.42bis

Fax Class

Class I & II

Data Bus

External

54793

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

AA

Unidentified

On

Auto-answer enabled

AA

Unidentified

Off

Auto-answer disabled

AA

Unidentified

Blinking

Phone is ringing

RX

Unidentified

On

Modem is receiving data

RX

Unidentified

Off

Modem is not receiving data

TX

Unidentified

On

Modem is transmitting data

TX

Unidentified

Off

Modem is not transmitting data

CD

Unidentified

On

Carrier signal detected

CD

Unidentified

Off

Carrier signal not detected

OH

Unidentified

On

Modem is off-hook

OH

Unidentified

Off

Modem is on-hook

RS

Unidentified

On

Modem is ready to send data

RS

Unidentified

Off

Modem is not ready to send data

TR

Unidentified

On

DTR signal is high

TR

Unidentified

Off

DTR signal is low

EC

Unidentified

On

Error correction enabled

EC

Unidentified

Off

Error correction disabled

CS

Unidentified

On

Modem is clear to send data

CS

Unidentified

Off

Modem is not clear to send data

MR

Unidentified

On

Power is on

MR

Unidentified

Off

Power is off

SUPPORTED COMMAND SET

Basic AT Commands

AT, ‘+++’, A/

A, D, E, H, M, V, W, X, Y, Z

&A, &G, &S, &V, &W, &Y, &Z

S Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S30, S36, S37,

S38, S46, S48, S82, S86, S95, S108, S109, S110

Note: See MHI Help File for full command documentation.

 

 

 

 

Proprietary AT Command Set

AUTO-MODE DETECTION

Type:

Configuration

Format:

AT [cmds] Nn [cmds]

Description:

Selects various options for the automatic detection and negotiation of protocols during the handshake process if the modem is communicating with a remote modem of dissimilar speed.

Command

Function

N0

Auto-mode detection disabled

í N1

In originate mode, handshake begins at line speed designated by the S37 register. Modem can shift to a slower speed if necessary.

In answer mode, handshake attempted with the following protocols in order - V.FC, V.32bis, V.32, V.22bis, V.22 or Bell 212, V.21, and Bell 103

COMMUNICATION PROTOCOLS

Type:

Configuration

Format:

AT [cmds] Bn [cmds]

Description:

Selects the communication protocol for data calls

Note: The B command allows the simultaneous selection of more than one suffix, enabling multiple protocols.

Command

Protocol

B0

ITU-T V.22 at 1200bps

B1

Bell 212A at 300 or 1200bps

B15

ITU-T V.21 at 300bps

B16

Bell 103 at 300bps

COMMUNICATIONS MODE

Type:

Configuration

Format:

AT [cmds] &Mn [cmds]

Description:

Selects communications mode

Command

Mode

í &M0

Asynchronous mode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMMUNICATIONS MODE

Type:

Configuration

Format:

AT [cmds] &Qn [cmds]

Description:

Selects communications mode options

Command

Mode

í &Q0

Asynchronous mode, serial port speed follows connect speed.

&Q1

Synchronous mode 1

&Q2

Synchronous mode 2

&Q3

Synchronous mode 3

&Q4

Hayes AutoSync mode

&Q5

Error correction mode

&Q6

Buffered asynchronous mode

&Q8

MNP operational mode

&Q9

Conditional data compression

DATA CARRIER DETECT (DCD)

Type:

Configuration

Format:

AT [cmds] &Cn [cmds]

Description:

Selects whether the DCD option is enabled or disabled

Command

Function

í &C0

DCD enabled

&C1

DCD enabled after carrier signal detected

&C2

DCD on except during disconnect

DATA TERMINAL READY (DTR)

Type:

Configuration

Format:

AT [cmds] &Dn [cmds]

Description:

Selects modem response to DTR

Note: The action each variant of &D causes depends on the setting of &Q

Command

Function

í &D0

Modem does not respond to DTR

&D1

Modem goes to command mode after DTR goes is off

&D2

Modem goes to command mode and disconnects (hangs up) after DTR goes off; Auto-Answer is disabled.

&D3

Modem is initialized after DTR goes off

FACTORY DEFAULT PROFILE

Type:

Configuration

Format:

AT [cmds] &F [cmds]

Description:

Sets values in active profile to values found in the default profile

Command

Function

í &F0

Restore factory default Hayes-compatible parameters

&F1

Restore factory default IBM-compatible parameters

&F2

Restore factory default Macintosh software handshake parameters

&F3

Restore factory default Macintosh hardware handshake parameters

 

 

FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] &Kn [cmds]

Description:

Enables flow control options

Command

Function

&K0

Flow control disabled

&K1

RTS to CTS flow control enabled

&K2

XON/XOFF flow control enabled

í &K3

RTS/CTS flow control enabled

&K4

XON/XOFF flow control enabled

&K5

Transparent XON/XOFF flow control enabled

&K6

XON/XOFF flow control with pass through enabled

&K7

RTS/CTS flow control with XON/XOFF enabled

HELP

Type:

Immediate

Format:

AT [cmds] $H

Description:

Accesses summary of the modem’s commands

ON-LINE

Type:

Immediate

Format:

AT [cmds] On [cmds]

Description:

Controls on-line command (data transmission) state options.

Note: The O command must be placed at the end of the command string.

Command

Function

O0

On-line command mode with no retraining enabled

O1

On-line command mode with retraining enabled

O2

On-line command mode with rate negotiation

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested

Command

Function

I0

Reports modem model and speed

I1

Reports ROM checksum

I2

Performs a ROM checksum, reports OK, or ERROR

I3

Reports firmware revision number

I4

Reports modem feature availability

I6

Reports link statistics

 

 

 

 

 

 

 

RESULT CODES

Type:

Configuration

Format:

AT [cmds] Qn [cmds]

Description:

Enables modem to send result codes to the DTE

Command

Function

í Q0

Result code sending enabled

Q1

Result code sending disabled

Q2

Modem returns result codes when originating a call, but does not return result codes from the answer mode.

SPEAKER VOLUME

Type:

Configuration

Format:

AT [cmds] Ln [cmds]

Description:

Controls speaker volume

Command

Function

L0

Low volume setting

L1

Low volume setting

í L2

Medium volume setting

L3

Highest volume setting

TEST MODES

Type:

Immediate

Format:

AT [cmds] &Tn

Description:

Selects test options

Command

Function

&T0

End current test

&T1

Begin local analog loopback test

&T3

Begin local digital loopback

&T4

Grant remote digital loopback request

&T5

Deny remote digital loopback request

&T6

Request remote digital loopback

&T7

Request remote digital loopback and self-test

&T8

Begin local analog loopback and self-test

&T19

Perform RTS/CTS cable test

TRELLIS CODE MODULATION

Type:

Immediate

Format:

AT [cmds] &U [cmds]

Description:

Controls trellis encoding

Command

Function

&U0

Enables trellis encoding

&U1

Disables trellis encoding

 

 

 

 

 

V.32 - AUTO-RETRAIN

Type:

Configuration

Format:

AT [cmds] &Bn [cmds]

Description:

Controls auto-retrain function if poor line quality is detected

Command

Function

í &B0

Auto-retrain disabled modem hangs-up

&B1

Auto-retrain enabled if line quality is poor

&B2

Auto-retrain enabled, disconnect if line quality is poor

S(status) -REGISTERS

DCE SPEED

Type:

Register

Format

AT [cmds] S43 [cmds]

Description:

Displays the DCE speed of the current connection

PACKET SIZE

Type:

Register

Format

AT [cmds] S136=n [cmds]

Range:

0-2

Unit:

frame size

Description:

Designates the LAP-M packet size

PRIVATE CIRCUIT CARRIER LEVEL

Type:

Register

Format

AT [cmds] S63=n [cmds]

Range:

0-15

Unit:

-dBm

Description:

Controls the carrier power level in dBm for leased line operation.

PROBE TIMING

Type:

Register

Format:

AT [cmds] S97=n [cmds]

Description:

Sets the duration of the signal used by the modem in answer mode during a V.32 automode handshake to determine if the calling modem is a V.22 or V.22bis type modem

RING SETTINGS

Type:

Register

Format:

AT [cmds] S101=n [cmds]

Range:

0-255

Unit:

bit-mapped

Description:

Sets the distinctive ring setting