PRACTICAL PERIPHERALS, INC.

PM14400FX V.32bis

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.22, V.22bis, V.32, V.32bis

Fax Modulation Protocol

ITU-T V.27ter, V.29

Error Correction/Compression

MNP5, V.42, V.42bis

Fax Class

Class I

Data Bus

Unidentified

CONNECTIONS

Function

Label

Function

Label

Line in

CN1

Line out

CN2

SERIAL PORT ADDRESS

Setting

SW1/1

SW1/2

COM1 (3F8h)

On

On

COM2 (2F8h)

On

Off

COM3 (3E8h)

Off

On

COM4 (2E8h)

Off

Off

 

SUPPORTED COMMAND SET

Basic AT Commands

AT, ‘+++’, A/

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

&A, &B, &F, &L, &R, &S, &T, &V, &W, &Y, &Z

S Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S26, 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

CLOCK SOURCE - SYNCHRONOUS TRANSMIT

Type:

Configuration

Format:

AT [cmds] &Xn [cmds]

Description:

Selects DTE transmit clock source

Command

Function

&X2

Modem generates clock from the receive carrier signal

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

B2

ITU-T V.23 at 75/1200bps

B3

ITU-T V.23 at 1200/75bps

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

&Q3

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 signal 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

 

 

 

 

 

 

 

 

 

 

 

 

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

RTS/CTS flow control with pass through enabled

&K7

RTS/CTS flow control with XON/XOFF DCE to DCE 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:

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 and initiate 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

Perform ROM checksum, returns 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

TRELLIS CODE MODULATION

Type:

Immediate

Format:

AT [cmds] &U [cmds]

Description:

Controls trellis encoding

Command

Function

&U0

Enables trellis encoding

&U1

Disables trellis encoding

 

 

 

 

 

 

S(status) -REGISTERS

BUFFER LOWER LIMIT

Type:

Register

Format:

AT [cmds] S49=n [cmds]

Range:

1-249

Default:

64

Unit:

bytes

Description:

Sets the lower limit of the buffer

BUFFER UPPER LIMIT

Type:

Register

Format:

AT [cmds] S50=n [cmds]

Range:

2-250

Default:

bytes

Unit:

220

Description:

Sets the upper limit of the buffer

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

Units:

-dBm

Description:

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

PROBE TIMING

Type:

Register

Format:

AT [cmds] S97=n [cmds]

Range:

15-70

Unit:

0.1 sec

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 map

Description:

Sets the distinctive ring setting