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PC CARD MODEM WITH GSM

IBM CORPORATION

PC CARD MODEM WITH GSM

Card Type

Modem, Fax

Chip Set

Unidentified

Maximum Modem Rate

56Kbps

Maximum Fax Rate

14.4Kbps

Data Modulation Protocol

Unidentified

Fax Modulation Protocol

Unidentified

Error Correction/Compression

Unidentified

Fax Class

Unidentified

Data Bus

PCMCIA

55021

SUPPORTED COMMAND SET

Basic AT Commands

AT, +++, A/

A, B, E, F, H, M, O, Q, S, V, W, X, Y, Z

&C, &D, &R, &T, &V, &W, &Y, &Z

Extended AT Commands

\A, \B, \K

%C, %E, %L, %Q

S Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S14, S16, S18, S21, S22, S25, S26, S29,

S30, S31, S32, S33, S38, S40, S41, S95

Special Commands

+MS

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

COMMUNICATIONS MODE

Type:

Configuration

Format:

AT [cmds] &Qn [cmds]

Description:

Selects communications mode options

Command

Mode

í &Q0

Direct asynchronous mode

&Q4

Auto-synchronous mode

&Q5

Error correction mode

&Q6

Buffered asynchronous mode

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

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"WXY"

Optional method of denoting telephone numbers. Letters enclosed in quotes are interpreted as numbers according to the system found on a telephone keypad.

D^

Changes the state of call tone

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 credit card (bong) tone before continuing with the dial string

D;

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

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

Load factory configuration 0

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

&K6

Both RTS/CTS & XON/XOFF flow control enabled

 

 

 

 

 

 

 

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested

Command

Function

I0

Reports the product code

I1

Reports firmware checksum

I2

Tests and reports ROM checksum

I3

Report software release code

I4

Report product identifier

SPEAKER VOLUME

Type:

Configuration

Format:

AT [cmds] Ln [cmds]

Description:

Controls speaker volume

Command

Function

L0

Lowest volume setting

L1

Low volume setting

í L2

Medium volume setting

L3

Highest volume setting

Extended AT Commands

ERROR CORECTION PROTOCOL

Type:

Configuration

Format:

AT [cmds] /Nn [cmds]

Description:

Controls the error correction protocol

Command

Function

/N0

MNP and LAPM disabled

í /N1

MNP and LAPM disabled

/N2

V.42 reliable enabled

/N3

V.42 auto-reliable mode enabled

/N4

LAPM reliable mode enabled

/N5

MNP reliable mode enabled

INITIATE MNP RELIABLE MODE

Type:

Immediate

Format:

AT [cmds] \O [cmds]

Description:

Initiates MNP reliable mode from normal or direct mode

 

 

 

 

 

 

 

S(status) -REGISTERS

BIT-MAPPED REGISTER

Type:

Register

Format:

AT [cmds] S23=n [cmds]

Unit:

Bit-mapped

Description:

Digital loop-back control

Bit

Value

Function

0

0

1

Remote request for remote digital loop-back disabled

Remote request for remote digital loop-back enabled

3,2,1

000

010

011

100

101

111

DTE baud rate = 300

DTE baud rate = 1200

DTE baud rate = 2400

DTE baud rate = 4800

DTE baud rate = 9600

DTE baud rate = 19200

5,4

00

01

10

11

Parity even

Not used

Odd parity

No parity

BIT-MAPPED REGISTER S27

Format

AT [cmds] S27=n [cmds]

Default:

Unidentified

Range:

0-111

Unit:

Bit-mapped

Description:

Selects synchronous/asynchronous mode, line type, clock source, and ITU-T/Bell modes.

Bit

Value

Function

3, 1, 0

000

001

010

011

100

101

111

Asynchronous mode, serial port speed follows connect speed

Asynchronous off-line command mode and synchronous connect mode

Asynchronous off-line command mode; modem autodials first number in directory, then synchronous connect mode

Asynchronous off-line command mode on low DTR, synchronous connect mode on high DTR

Auto-synchronous mode

Error correction mode

Buffered asynchronous mode

6

0

1

ITU/T mode

Bell mode

7

0

Reserved

 

 

 

 

 

 

 

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

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.

Bit

Value

Function

2, 1, 0

0

1

10

11

100

101

110

111

Modem disconnects

Modem stays on-line and a direct mode connection is established

Reserved

Modem stays on-line and a normal mode connection is established

An MNP connection is attempted and if it fails, the modem disconnects

An MNP connection is attempted and if it fails, a direct mode connection is established

Reserved

An MNP mode connection is attempted and if it fails, a normal mode connection is established

7 - 3

0

Reserved

ERROR CORRECTION/COMPRESSION

Type:

Register

Format:

AT [cmds] S46=n [cmds]

Description:

Selects active error correction and compression protocols

Command

Function

S46=136

LAP-M only, no compression

S46=138

LAP-M with V.42bis data compression

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

FLOW CONTROL

Type:

Register

Format

AT [cmds] S39=n [cmds]

Description:

Displays the current flow control

Bit

Value

Function

2, 1, 0

0

11

100

101

110

No flow control

RTS/CTS

XON/XOFF

Transparent XON

Both RTS/CTS and XON/XOFF

7 - 3

0

Reserved

LINE SPEED

Type:

Register

Format

AT [cmds] S37=n [cmds]

Description:

Sets the line connection speed

Bit

Value

Function

4, 3,2,1,0

00000

00010

00100

00110

00100

00101

0110

11000

11100

11110

Attempt auto mode connection

Attempt 300bps connection

Attempt 300bps connection

Attempt 300bps connection

Reserved

Attempt V.32bis/V.32 4800bps connection

Attempt 2400bps connection

Attempt V.23 connection

Attempt V.32bis/V.32 9600bps connection

Attempt V.32bis/V.32 12000bps connection