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PM2400EFX

PRACTICAL PERIPHERALS, INC.

PM2400EFX

Card Type

Modem (asynchronous)

Chip Set

Unidentified

Maximum Modem Rate

2400bps

Maximum Fax Rate

9600bps

Data Modulation Protocol

Bell 103/212A, ITU-T V.22, V.22bis

Fax Modulation Protocol

ITU-T V.21CH2, V.27ter, V.29

Error Correction/Compression

V.42bis, V.42, MNP5, MNP 10

Fax Class

Class I & II

Data Bus

Unidentified

Card Size

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, B, E, H, M, O, P, T, V, W, X, Y, Z

&T, &V, &W, &Y, &Z

S Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S30, S38, S46

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

Auto-mode detection enabled

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.

&Q5

V.42 error correction mode

&Q6

Buffered asynchronous mode

&Q8

MNP operational mode

&Q9

LAPM negotiation enabled

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 the disconnect process

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

Type:

Immediate

Format:

AT [cmds] D<#> [cmds]

Description:

Dials telephone number according to any modifiers included in the string

Note:

Any combination of modifiers can be used to produce the desired dial functions in sequence.

Command

Function

DL

Re-dial last number

DP

Pulse dialing enabled

DR

Answer mode enabled; originate mode disabled following handshake initiation.

DS=n

Dial stored telephone number n

DT

Tone dialing enabled/Pulse dialing disabled

DW

Dialing resumed following dial tone detection

D,

Dialing paused for amount of time specified in S8 register

D!

Flash function initiated. Modem commanded to go off-hook for specified time before returning on-hook.

D@

Wait for Quite Answer function enabled. Modem waits until a "quiet answer," a ring-back signal followed by silence up to the time specified in S7, is received prior to executing the rest of the dial string.

D$

Wait for prompt tone detection function enabled. Waits for prompt tone for amount of time specified by the S7 command.

D;

Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command.

DSR OPTIONS

Type:

Configuration

Format:

AT [cmds] &Sn [cmds]

Description:

Set DSR options

Command

Mode

í &S0

Force DSR on

&S1

Assert DSR during handshaking, turn off DSR in test mode or idle. DSR off on disconnect.

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

Hayes-compatible settings

&F1

IBM-compatible settings

FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] &Kn [cmds]

Description:

Enables flow control options

Command

Function

&K0

Flow control disabled

í &K3

RTS/CTS flow control enabled

&K4

XON/XOFF flow control enabled

&K5

Transparent XON/XOFF flow control enabled

GUARD TONE

Type:

Configuration

Format:

AT [cmds] &Gn [cmds]

Description:

Command is included for compatibility and performs no function

JACK TYPE

Type:

Configuration

Format:

AT [cmds] &Jn [cmds]

Description:

Command is included for compatibility and performs no function

LINE TYPE

Type:

Configuration

Format:

AT [cmds] &Ln [cmds]

Description:

Command is included for compatibility and performs no function

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested

Command

Function

I1

Reports ROM checksum

I2

Tests and reports ROM checksum

I3

Reports firmware revision number

I4

Reports modem feature availability

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 when answering a call.

RTS/CTS

Type:

Configuration

Format:

AT [cmds] &Rn [cmds]

Description:

Command is included for compatibility and performs no function

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

TRANSMIT CLOCK SELECTION

Type:

Configuration

Format:

AT [cmds] &Xn [cmds]

Description:

Command is included for compatibility and performs no function

S(status) -REGISTERS

ERROR CORRECTION NEGOTIATION

Type:

Register

Format

AT [cmds] S36=n [cmds]

Description:

Selects the action of the modem if it fails to connect with the error-correction protocol set in &Q.

Command

Function

S36=0

Hang up

S36=1

Attempt a direct connection

S36=3

Attempt a buffered connection

S36=4

Attempt a connection at MNP2-4; if that fails, hang up.

S36=5

Attempt a connection at MNP2-4; if that fails, attempt a direct connection.

í S36=7

Attempt a connection at MNP2-4; if that fails, attempt a buffered connection.

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=3

300bps

S37=5

1200bps

S37=6

2400bps

S37=7

75/1200bps

FEATURE NEGOTIATION OPTIONS

Type:

Register

Format:

AT [cmds] S48=n [cmds]

Description:

Selects active error correction and compression protocols

Command

Function

S48=0

Detection negotiation disabled, XID negotiation disabled

í S48=7

Detection negotiation and XID negotiation enabled

S48=128

Fall-back to options set in S36

BREAK OPTIONS

Type:

Register

Format

AT [cmds] S82=n [cmds]

Description:

Sets the method for break transmission during error-control and ASB connections.

Command

Function

S82=3

In-sequence signaling, timed break sent in sequence with transmitted data

S82=7

Destructive signaling, buffers cleared, immediately send timed break

í S82=128

In-sequence signaling, timed break sent in sequence with transmitted data

CONNECTION FAILURE CODES

Type:

Register

Format

AT [cmds] S86? [cmds]

Description:

Reports codes which correspond to the possible causes of a connection failure

Value

Meaning

0

Normal hang up

4

Carrier signal lost

5

No error-control detected for remote modem during feature negotiation

9

No common protocol found

12

No failure - remote modem disconnected normally

13

Remote modem failed to respond after 10 re-transmissions same message

14

Violation of negotiated protocol caused failure

EXTENDED RESULT CODES

Type:

Register

Format

AT [cmds] S95=n [cmds]

Default:

0

Range:

0-255

Unit:

Bit-mapped

Description:

Works in combination with the Wn command to enable extended result codes. Features enabled by S95 take precedence over the options selected by Wn.

Value

Meaning

0

Extended messages disabled

1

Use DCE speed rather than DTE speed when reporting CONNECT messages

2

Append /ARQ to CONNECT result message when an EC connection is established

4

Enable CARRIER messages

8

Enable PROTOCOL messages

32

Enable COMPRESSION messages

SIGNAL QUALITY OPTIONS

Type:

Register

Format

AT [cmds] S101=n [cmds]

Description:

Sets the required signal quality for the fastest speed at which handshaking can occur, as set in S109, when using the V.32bis and V.FC protocols. If the signal quality is below that set by S108, then the modem attempts to connect at the next highest speed selected in S109.

Note: ATN0 command is used, only the speed set in S37 is used during handshaking.

Command

Function

í 0

MNP level 10 service disabled

1

MNP level 10 service enabled. Transmit level fixed at -10dBn. Negotiation occurs at mutually-agreed line speed

3

MNP level 10 service enabled. Transmit level adjusted during retrain/speed shift. Negotiation occurs at mutually-agreed line speed

5

MNP level 10 services enabled. Transmit level fixed at -10dBm. Negotiation occurs at 1200bps.

7

MNP level 10 services enabled. Transmit level adjusted during retrain/speed shift. Negotiation occurs at 1200bps.