LINKSYS

PCMCIA 33.6 LANMODEM CARD

Card Type

Modem (asynchronous)

Chip Set

AT&T

Maximum Modem Rate

33.6Kbps

Maximum Fax Rate

14.4Kbps

Data Modulation Protocol

Bell 103/212A

ITU-T V.21, V.22, V.23, V.34

Fax Modulation Protocol

V.17

Error Correction/Compression

MNP5, V.42, V.42bis

Fax Class

Class I

NIC Type

Ethernet

Boot ROM

Not available

Network Transfer Rate

10Mbps

Topology

Star

Wiring Type

RJ-45 Unshielded twisted pair

Data Bus

PCMCIA Type II

54804

SUPPORTED COMMAND SET

Basic AT Commands

AT, A/

A, E, H, M, O, P, Q, T, V, W, X, Z

&C, &F, &G, &Q, &R, &T, &W, &X, &Y, &Z

Extended AT Commands

\A, \B, \C, \G, \J, \T, \V, \X

%A

S Registers

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

Special Commands

-J

Note: See MHI Help File for full command documentation.

Proprietary AT Command Set

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 or ITU-T V.21 at 300bps

B1

Bell 212A at 1200bps or Bell 103 at 300bps

B2

V.23 selection, in originate mode and receive at 1200bps, transmit at 75bps; in answer mode, receive at 75bps and transmit at 1200bps.

B3

V.23 selection, in originate mode receive at 75bps and transmit at 1200bps; in answer mode, receive at 1200bps and transmit at 75bps

 

 

 

 

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

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;

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

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

Handshake only at the communication rate specified by S37 with fallback disabled

N1

Start handshake at the communication standard specified by S37. Fallback enabled

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

Tolerate any condition

 

 

 

 

 

 

 

 

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

Reserved

&K2

Reserved

í &K3

RTS/CTS flow control enabled

&K4

XON/XOFF flow control enabled

&K5

Error

COMMUNICATIONS MODE

Type:

Configuration

Format:

AT [cmds] &Mn [cmds]

Description:

Selects communications mode

Command

Mode

í &M0

Asynchronous mode

&M1

Synchronous connect mode and asynchronous off-line command mode.

&M2

Synchronous connect mode and asynchronous off-line command mode and set DTR high.

&M3

Synchronous connect mode

&M4

Hayes AutoSync mode

PULSE DIALING RATIO

Type:

Configuration

Format:

AT [cmds] &Pn [cmds]

Description:

Selects pulse dial make/break ratio

Command

Function

í &P0

39/61ms at 10pps (North America)

&P1

33/67ms at 10pps (Europe)

 

 

 

 

DATA SET READY (DSR)

Type:

Configuration

Format:

AT [cmds] &Sn [cmds]

Description:

Selects DSR options

Command

Function

&S0

DSR forced high

í &S1

DSR high only while modem is handshaking or connected

CONFIGURATION PROFILES

Type:

Immediate

Format:

AT [cmds] &V [cmds]

Description:

Displays active and stored configuration profiles

Command

Function

&V0

View active profile 0

&V1

View active profile 1

Extended AT Commands

DATA COMPRESSION

Type:

Configuration

Format:

AT [cmds] %Cn [cmds]

Description:

This command controls the MNP5.

Command

Function

%C0

No compression

%C1

MNP class 5 compression

DTE FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] \Qn [cmds]

Description:

This command selects the flow control method.

Command

Function

\Q0

Disables flow control

\Q1

XON/XOFF software flow control

\Q2

CTS flow control to DTE

\Q3

RTS/CTS hardware flow control

CONNECT MODE

Type:

Configuration

Format:

AT [cmds] \Nn [cmds]

Description:

Controls the type of connection the modem will operate in

Command

Function

\N0

Normal mode enabled

\N1

Direct mode enabled

\N2

Reliable mode enabled

\N3

LAPM, MNP or normal mode

\N4

LAPM of MNP mode

S(status) -REGISTERS

INACTIVITY TIMER

Type:

Register

Format

AT [cmds] S30=n [cmds]

Default:

0

Range:

0-90

Unit:

10 seconds

Description:

Maximum duration of DTE and DCE inactivity allowed prior to initiating hang-up process.

Note: S30=0 disables the timer and allows indefinite inactivity.

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

4800bps

S37=8

7200bps

S37=9

9600bps

S37=10

12.0Kbps

S37=11

14.4Kbps

S37=12

16.8Kbps

S37=13

19.2Kbps

S37=14

21.6Kbps

S37=15

24.0Kbps

S37=16

26.4Kbps

S37=17

28.8Kbps

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DTE RATE STATUS

Type:

Register

Format

AT [cmds] S62=n [cmds]

Default:

16

Unit:

1 second

Description:

Displays the DTE rate status

Value

Meaning

0

300bps

1

600bps

2

1200bps

3

2400bps

4

4800bps

5

7200bps

6

9600bps

7

12000bps

8

14400bps

9

16800bps

10

19200bps

11

21600bps

12

24000bps

13

26400bps

14

28800bps

15

38400bps

16

57600bps

17

115200bps

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DTE SPEED SELECTION

Type:

Register

Format

AT [cmds] S72n [cmds]

Description:

Selects the DTE speed during data transfer

Value

Meaning

S72=0

last autobaud speed

S72=1

300bps

S72=2

600bps

S72=3

1200bps

S72=4

2400bps

S72=5

4800bps

S72=6

7200bps

S72=7

9600bps

S72=8

12000bps

S72=9

14400bps

S72=10

16800bps

S72=11

19200bps

S72=12

21600bps

S72=13

24000bps

S72=14

26400bps

S72=15

28800bps

S72=16

38400bps

S72=17

57600bps

S72=18

115200bps