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PC PCMCIA 144, PC PCMCIA 144 EZ-PORT

PRACTICAL PERIPHERALS, INC.

PC PCMCIA 144, PC PCMCIA 144 EZ-PORT

Card Type

Modem (asynchronous)

Chip Set

Unidentified

Maximum Modem Rate

14.4Kbps

Maximum Fax Rate

14.4Kbps

Data Modulation Protocol

Bell 103/212A

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

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

54796

SUPPORTED COMMAND SET

Basic AT Commands

AT, +++, A/

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

&A, &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, S99, S108, S109, S110, 201

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

Originate or answer: handshake only at speed in S37

í N1

Negotiate highest common speed starting in S37

CODE MODULATION

Type:

Immediate

Format:

AT [cmds] &Un

Description:

Control trellis code modulation

Command

Function

&U0

Trellis coding enabled

&U1

Trellis coding disabled

COMMUNICATIONS MODE

Type:

Configuration

Format:

AT [cmds] &Qn [cmds]

Description:

Selects communications mode options

Command

Mode

í &Q0

Asynchronous mode

&Q4

Auto-synchronous mode

&Q5

Error correction mode

&Q6

Buffered asynchronous mode

&Q8

MNP mode

&Q9

V.42bis data compression enabled, MNP5 disabled

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 300 or 1200bps

B1

Bell 212A at 300 or 1200bps

B15

ITU-T V.21 at 300bps

B16

Bell 103 at 300bps

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

DIAL UP MODE

Type:

Configuration

Format:

AT [cmds] &Ln [cmds]

Description:

Sets the dial up mode

Command

Line Type

í &L0

Select dial up mode

DATA SET READY (DSR)

Type:

Configuration

Format:

AT [cmds] &Sn [cmds]

Description:

Selects DSR options

Command

Function

&S0

DSR forced high

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

Hays-compatible settings

&F1

IBM-compatible settings

&F2

Macintosh software handshake settings

&F3

Macintosh hardware handshake settings

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

GUARD TONE

Type:

Configuration

Format:

AT [cmds] &Gn [cmds]

Description:

Commands the modem to transmit a guard tone in V.22/V.22bis

Note: Used primarily for international data transmission

Command

Function

í &G0

Guard tone disabled

HELP

Type:

Configuration

Format:

AT [cmds] $Hn [cmds]

Description:

Displays the help templates for the $ 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

O3

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 product code

I1

Reports ROM checksum

I2

Reports OK or ERROR

I3

Reports modem firmware revision number

I4

Reports a number series representing feature bit map

I6

Reports data connection information

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

Result code sending in originate mode only

SPEAKER VOLUME

Type:

Configuration

Format:

AT [cmds] Ln [cmds]

Description:

Command is included for compatibility only, it performs no function.

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 no line improvement over period indicated in S7

S(status) -REGISTERS

DCE SPEED

Type:

Register

Format

AT [cmds] S43=n [cmds]

Description:

Displays the current DCE speed

DCE LINE SPEED

Type:

Register

Format

AT [cmds] S37=n [cmds]

Description:

Sets the maximum allowable data exchange rate attempted during handshake process.

Command

Function

í S37=0

Speed of last connection

S37=1

75bps

S37=2

110bps

S37=3

300bps

S37=4

600bps

S37=5

1200bps

S37=6

2400bps

S37=7

4800bps

S37=8

7200bps

S37=9

9600bps

S37=10

12.0Kbps

S37=11

14.4Kbps

CIRCUIT CARRIER LEVEL

Type:

Register

Format:

AT [cmds] S63=n [cmds]

Range:

0-15dBm

Description:

Private circuit carrier level selection

AUTOMODE AND PROBE TIMING

Type:

Register

Format:

AT [cmds] S97=n [cmds]

Default:

30

Range:

15-70

Unit:

0.1 seconds

Description:

V.32 Automode. V.22/V.22bis Probe Timing

DISTINCTIVE RING

Type:

bit map

Format:

AT [cmds] S101=n [cmds]

Default:

00

Range:

0-255

Unit:

bit map

Description:

Selects distinctive ring setting

PACKET SIZE

Type:

Register

Format

AT [cmds] S136=n [cmds]

Default:

1

Range:

0-2

Description:

Selects LAPM packet size