XIRCOM, INC.

CM-33

Card Type

Modem (asynchronous)

Chipset

Unidentified

Maximum Onboard Memory

64KB SRAM/256KB Flash RAM

Maximum Data Rate

33.6Kbps

Maximum Fax Rate

14.4Kbps

Data Modulation

Bell 212A

ITU-T V.22, V.22bis, V.23, V.32, V.32bis, V.34

AT&T V.32terbo

Fax Modulation

ITU-T V.17, V.27ter, V.29

Error Correction/Compression

MNP5, V.42, V.42bis

Fax Class

Class I & II

Data Bus

PCMCIA Type II

CONNECTIONS

Function

Label

Function

Label

MAM connector to PCMCIA card

CN1

Telephone line out

CN2

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

LED1

Unidentified

On

Modem is receiving or transmitting data

LED1

Unidentified

Off

Modem is not receiving or transmitting data

LED2

Unidentified

On

Carrier signal detected

LED2

Unidentified

Off

Carrier signal not detected

SUPPORTED STANDARD COMMANDS

Basic AT Commands

+++, A/

A, D, E, H, M, N, P, Q, T, V, W, X, Y, Z

&C, &D, &F, &G, &K, &P, &S, &V, &W, &Y, &Z

Extended AT Commands

\A, \B, \C, \G, \K, \N, \O, \Q, \T, \U, \V, \X, \Y, \Z

%A, %C, %E, %G

Special AT Commands

-C, "H, -J, "O

S-Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S25, S30, S46, S82, S95, S108

Note: See MHI help file for complete information.

Proprietary AT Command Set

COMMUNICATIONS MODE

Type:

Configuration

Format:

AT [cmds] &Qn [cmds]

Description:

Selects communications mode options.

Command

Mode

í &Q5

V.42 error correction mode.

&Q6

Buffered asynchronous mode.

&Q8

MNP error correction mode.

&Q9

V.42bis data compression or MNP4 error correction mode.

CONNECTION FAILURE CODES

Type:

Register

Format

AT [cmds] S86? [cmds]

Description:

Returns a value which indicate the cause of a connection failure.

Value

Meaning

0

Normal hang up.

1

No failure - normal hang-up after fax connection.

4

Carrier signal lost.

5

No error-control detected for remote modem during feature negotiation.

6

Remote modem failed to respond to feature negotiation.

8

No common framing technique found.

9

No common protocol found.

10

Remote modem sent erroneous feature negotiation message.

12

No failure - remote modem disconnected normally.

13

Remote modem failed to respond after the allowed number of re-transmissions of the same message.

14

Violation of negotiated protocol caused failure.

15

Negotiated compression failed.

18

Time limit reached according to parameters set in S30.

19

Remote modem failed to respond after the allowed number of re-transmissions of the same message.

32

Disconnect tone received from telephone network.

33

User aborted connection.

34

DTR signal was lost.

99

Reason for disconnection not known.

COUNTRY CODE

Type:

Register

Format:

AT [cmds] S133=n [cmds]

Description:

Selects the country the modem is configured for.

Note:

See the %TE command for more information. Not all options may be supported by all modems.

Command

Function

S133=0

Country code set for the United States.

S133=1

Country code set for Great Britain.

S133=2

Country code set for Germany.

S133=3

Country code set for France.

S133=4

Country code set for Belgium.

S133=5

Country code set for the Netherlands.

S133=6

Country code set for Italy.

S133=7

Country code set for Spain.

S133=8

Country code set for Austria.

S133=9

Country code set for Switzerland.

S133=10

Country code set for Portugal.

S133=11

Country code set for Sweden.

S133=12

Country code set for Norway.

S133=13

Country code set for Denmark.

S133=14

Country code set for Finland.

S133=15

Country code set for Cyprus.

S133=16

Country code set for Czechoslovakia.

S133=17

Country code set for Greece.

S133=18

Country code set for Hungary.

S133=19

Country code set for Poland.

S133=20

Country code set for Russia.

S133=21

Country code set for Turkey.

S133=22

Country code set for Luxembourg.

S133=23

Country code set for Iceland.

S133=25

Country code set for Egypt.

S133=26

Country code set for India.

S133=27

Country code set for Kenya.

S133=28

Country code set for South Africa.

S133=29

Country code set for Morocco.

S133=48

Country code set for Abu Dhabi.

S133=49

Country code set for Australia.

S133=50

Country code set for Bangladesh.

S133=51

Country code set for China.

S133=52

Country code set for Hong Kong.

S133=53

Country code set for Indonesia.

S133=54

Country code set for Japan.

S133=55

Country code set for Korea.

S133=56

Country code set for Malaysia.

S133=57

Country code set for New Zealand.

COUNTRY CODE (CON'T)

Command

Function

S133=58

Country code set for the Philippines.

S133=59

Country code set for Singapore.

S133=96

Country code set for Argentina.

S133=97

Country code set for Bolivia.

S133=98

Country code set for Brazil.

S133=99

Country code set for Chile.

S133=100

Country code set for Colombia.

S133=101

Country code set for Costa Rica.

S133=102

Country code set for Guatemala.

S133=103

Country code set for Mexico.

S133=104

Country code set for Nicaragua.

S133=105

Country code set for Paraguay.

S133=106

Country code set for Peru.

S133=107

Country code set for Uruguay.

S133=108

Country code set for Venezuela.

S133=128

Country code set for Kuwait.

S133=129

Country code set for Oman.

S133=130

Country code set for Saudi Arabia.

CREDIT CARD TONE TYPE

Type:

Register

Format:

AT [cmds] S121=n [cmds]

Description:

Selects the type of credit card tone the modem will detect.

Command

Function

í S121=0

Modem will detect AT&T credit card tone.

S121=1

Modem will detect MCI credit card tone.

DIAL DISPLAY

Type:

Configuration

Format:

AT [cmds] &En [cmds]

Description:

Selects whether the modem will display each digit as it is being dialed.

Command

Function

í &E0

Dial display disabled.

&E1

Dial display enabled.

DISPLAY INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested about the modem.

Command

Function

I0

Reports product identification code.

I1

Reports ROM checksum.

I2

Tests and reports ROM checksum.

I3

Reports firmware revision.

I4

Displays feature bitmap.

I6

Displays connection statistics.

DTE CONNECT SPEED RESULT CODE

Type:

Register

Format:

AT [cmds] S122=n [cmds]

Description:

Selects the DTE speed that the modem will report in CONNECT messages.

Command

Function

S122=0

Modem reports CONNECT.

S122=1

Modem reports CONNECT 1200.

S122=2

Modem reports CONNECT 2400.

S122=3

Modem reports CONNECT 4800.

S122=4

Modem reports CONNECT 7200.

S122=5

Modem reports CONNECT 9600.

S122=6

Modem reports CONNECT 12000.

S122=7

Modem reports CONNECT 14400.

S122=8

Modem reports CONNECT 16800.

S122=9

Modem reports CONNECT 19200.

S122=10

Modem reports CONNECT 21600.

S122=11

Modem reports CONNECT 24000.

S122=12

Modem reports CONNECT 26400.

S122=13

Modem reports CONNECT 28800.

S122=14

Modem reports CONNECT 38400.

S122=15

Modem reports CONNECT 57600.

S122=16

Modem reports CONNECT 115200.

S122=17

Modem reports CONNECT 230400.

HELP

Type:

Immediate

Format:

AT [cmds] $

Description:

Displays help screens on the modem's commands.

HELP SCREEN BORDER

Type:

Register

Format:

AT [cmds] S120=n [cmds]

Description:

Selects whether help screens will be displayed with an IBM Extended ASCII border around them.

Command

Function

S120=0

Help screens are displayed with border.

í S120=1

Help screens are displayed without border.

LINE SPEED - CURRENT

Type:

Register (read-only)

Format:

AT [cmds] S43? [cmds]

Description:

Returns a value indicating the speed of the current connection.

Value

Meaning

1

Speed of current connection is 1200/75bps.

2

Speed of current connection is 75/1200bps.

5

Speed of current connection is 1200bps.

6

Speed of current connection is 2400bps.

7

Speed of current connection is 4800bps.

8

Speed of current connection is 7200bps.

9

Speed of current connection is 9600bps.

10

Speed of current connection is 12Kbps.

11

Speed of current connection is 14.4Kbps.

15

Speed of current connection is 28.8Kbps.

16

Speed of current connection is 16.8Kbps.

17

Speed of current connection is 19.2Kbps.

19

Speed of current connection is 31.2Kbps.

20

Speed of current connection is 33.6Kbps.

29

Speed of current connection is 24Kbps.

33

Speed of current connection is 21.6Kbps.

LINE SPEED - DESIRED

Type:

Register

Format:

AT [cmds] S37=n [cmds]

Description:

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

Command

Function

S37=5

Set speed to 1200bps.

S37=6

Set speed to 2400bps.

S37=7

Set speed to 4800bps.

S37=8

Set speed to 7200bps.

S37=9

Set speed to 9600bps.

S37=10

Set speed to 12Kbps.

S37=11

Set speed to 14.4Kbps.

S37=15

Set speed to 28.8Kbps.

S37=16

Set speed to 16.8Kbps.

S37=17

Set speed to 19.2Kbps.

LINE SPEED - DESIRED (CON'T)

Command

Function

S37=19

Set speed to 31.2Kbps.

S37=20

Set speed to 33.6Kbps.

S37=29

Set speed to 24Kbps.

S37=33

Set speed to 21.6Kbps.

ON-LINE

Type:

Immediate

Format:

AT [cmds] On

Description:

Instructs the modem to return to the on-line state.

Command

Function

O0

Return to on-line state.

O1

Return to on-line state and initiate retrain sequence.

O3

Return to on-line state and initiate rate renegotiation sequence.

PROTOCOL SELECTION

Type:

Register

Format:

AT [cmds] S110=n [cmds]

Description:

Selects which protocols the modem will use when attempting to negotiate a connection.

Command

Function

S110=0

Modem will attempt to connect with V.23, V.22bis, V.22, or Bell 212A.

S110=1

Modem will attempt to connect with V.32, V.23, V.22bis, V.22, or Bell 212A.

S110=2

Modem will attempt to connect with V.32bis only.

S110=3

Modem will attempt to connect with V.32bis, V.32, V.23, V.22bis, V.22, or Bell 212A.

S110=4

Modem will attempt to connect with V.32terbo only.

S110=5

Modem will attempt to connect with V.32terbo, V.32bis, V.32, V.23, V.22bis, V.22, or Bell 212A.

S110=6

Modem will attempt to connect with 33.6Kbps V.34 only.

S110=7

Modem will attempt to connect with 33.6Kbps V.34, V.32terbo, V.32bis, V.32, V.23, V.22bis, V.22, or Bell 212A.

S110=8

Modem will attempt to connect with V.34 only.

í S110=9

Modem will attempt to connect with V.34, V.32terbo, V.32bis, V.32, V.23, V.22bis, V.22, or Bell 212A.

PROTOCOL - 1200BPS

Type:

Configuration

Format:

AT [cmds] Bn [cmds]

Description:

Selects the protocol the modem will use at 1200bps.

Command

Function

B0

Modem will use ITU-T V.22 at 1200bps.

í B1

Modem will use Bell 212A at 1200bps.

B2

Modem will use ITU-T V.23 at 75/1200bps.

B3

Modem will use ITU-T V.23 at 1200/75bps.

PROTOCOL - 2400BPS

Type:

Configuration

Format:

AT [cmds] Bn [cmds]

Description:

Selects the protocol the modem will use at 2400bps.

Command

Function

B30

Modem will use V.22bis at 2400bps.

í B33

Modem will use V.34 at 2400bps.

PROTOCOL - 4800BPS

Type:

Configuration

Format:

AT [cmds] Bn [cmds]

Description:

Selects the protocol the modem will use at 4800bps.

Command

Function

B41

Modem will use V.32 at 4800bps.

í B44

Modem will use V.34 at 4800bps.

PROTOCOL - 9600BPS

Type:

Configuration

Format:

AT [cmds] Bn [cmds]

Description:

Selects the protocol the modem will use at 9600bps.

Command

Function

B52

Modem will use V.32bis at 9600bps.

í B53

Modem will use V.34 at 9600bps.

PROTOCOL - 12KBPS

Type:

Configuration

Format:

AT [cmds] Bn [cmds]

Description:

Selects the protocol the modem will use at 12Kbps.

Command

Function

B70

Modem will use V.32 at 12Kbps.

í B72

Modem will use V.34 at 12Kbps.

PROTOCOL - 14.4KBPS

Type:

Configuration

Format:

AT [cmds] Bn [cmds]

Description:

Selects the protocol the modem will use at 14.4Kbps.

Command

Function

B75

Modem will use V.32bis at 14.4Kbps.

í B77

Modem will use V.34 at 14.4Kbps.

S133 COMMAND

Type:

Configuration

Format:

AT [cmds] %TE=n [cmds]

Description:

Selects whether the S133 command has any function.

Command

Function

%TE=0

S133 command has no function.

%TE=1

S133 command sets country code.

TRELLIS CODING

Type:

Configuration

Format:

AT [cmds] &Un [cmds]

Description:

Selects whether the modem will use trellis coding.

Command

Function

í &U0

Trellis coding enabled.

&U1

Trellis coding disabled.

V.32 - AUTO-RETRAIN

Type:

Configuration

Format:

AT [cmds] &Bn [cmds]

Description:

Controls auto-retrain function if poor line quality is detected.

Command

Function

&B0

Auto-retrain disabled, modem hangs up.

í &B1

Auto-retrain enabled, modem hangs up if retrain fails.

&B2

Auto-retrain disabled, modem does not hang up.

V.42bis DICTIONARY SIZE

Type:

Configuration

Format:

AT [cmds] "Nn [cmds]

Default:

2048

Range:

512 - 2048

Unit:

1 byte

Description:

Selects the size of the V.42bis dictionary.