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PC PCMCIA 288, PC PCMCIA 288 EZ-PORT

PRACTICAL PERIPHERALS, INC.

PC PCMCIA 288, PC PCMCIA 288 EZ-PORT

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.34, V.32bis, V.32, V.22bis, V.22, V.21, V.FC

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

PCMCIA

54792

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.

&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

&K3

RTS/CTS flow control enabled

&K4

XON/XOFF flow control 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:

Command is included for compatibility only. It performs no function

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