UNIDENTIFIED

INTERNAL 1/2 CARD MODEM

Modem Type

Data (synchronous/asynchronous)/Fax

Maximum Data Rate

9600bps

Maximum Fax Rate

14.4Kbps

Data Bus

8-bit ISA

Fax Class

Class 1

Data Modulation Protocol

Bell 103 & 212A

ITU-T V.21, V.22, V.22bis, V.32, V.32bis

Fax Modulation Protocol

ITU-T V.17, V27ter, V29

Error Correction/Compression

MNP 1 - 5, ITU-T V.42, V.42bis

CONNECTIONS

Purpose

Location

Purpose

Location

Line-in

CN1

Line-out

CN2

ADDRESS SELECT

COM/Address

SW1/1

SW1/2

í COM2/2F8h

Off

On

COM1/3F8h

Off

Off

COM3/3E8h

On

Off

COM4/2E8h

On

On

INTERRUPT SELECT

IRQ

SW1/3

SW1/4

í IRQ3

Off

On

IRQ2

On

On

IRQ4

Off

Off

IRQ5

On

Off

%A - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] %An [cmds]

Example:

AT M3 %A3 <CR>

Description

Sets the auto-reliable fall-back ASCII character. The default is 13.

%C - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] %Cn [cmds]

Example:

AT &Z1 %C0 D5555555<CR>

Description

Enables/disables MNP 5 data compression.

Command

Function

í %C1

MNP 5 data compression enabled.

%C0

MNP 5 data compression disabled.

%E - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] %En [cmds]

Example:

AT M3 %E0 D5555555<CR>

Description

Enables/disables the auto-retrain function for V,22bis and V.32 protocols.

Command

Function

í %E1

Auto-retrain function enabled.

%E0

Auto-retrain function disabled.

%G - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] %Gn [cmds]

Example:

AT M3 %G0 D5555555<CR>

Description

Enables/disables the auto-fall-back/fall-forward function for V,22bis and V.32 protocols.

Command

Function

í %E0

Auto-fall-back/fall-forward function disabled.

%E1

Auto-fall-back/fall-forward function enabled.

\A - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] \An [cmds]

Example:

AT M3 \An D5555555<CR>

Description

Sets the limits for the character block size.

\A - PROPRIETARY COMMAND

Command

Function

í \A3

256 characters.

\A0

64 characters.

\A1

128 characters.

\A2

192 characters.

\B - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] \Bn [cmds]

Example:

AT M3 \Bn D5555555<CR>

Description

Sets the transmit break length from 0 to 900 in 100ms increments. The default is 0ms (n = 0).

\C - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] \Cn [cmds]

Example:

AT M3 \Cn D5555555<CR>

Description

Sets the limits for the auto-reliable buffer.

Command

Function

í \C0

Auto-reliable buffer disabled.

\C1

Buffers characters for 4 seconds or until 200 characters are in the buffer.

\C2

Auto-reliable buffer disabled. Modem goes to normal mode if an auto-reliable character is received.

\G - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] \Gn [cmds]

Example:

AT M3 \Gn D5555555<CR>

Description

Enables/disables modem port flow control

Command

Function

í \G0

Port flow control disabled.

\G1

XON/XOFF port flow control enabled.

\J - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] \Jn [cmds]

Example:

AT M3 \Jn D5555555<CR>

Description

Enables/disables the serial port data transfer rate adjustment feature.

Command

Function

í \J0

Data transfer rate adjustment disabled (serial port allowable data transfer rate is constant).

\J1

Data transfer rate adjustment enabled (serial port data transfer rate depends on the data transfer rate established in the connection).

 

\K - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] \Kn [cmds]

Example:

AT M3 \Kn D5555555<CR>

Description

Sets the remote modem’s response to a break issued by the local modem.

Command

Function

í \K5

\K0, \K2, \K4

\K1

\K3

Local modem in connect state, reliable or normal mode:

Nondestructive/non-expedited handling of buffered data.

Remote modem goes into the command mode and does not return the break signal.

Destructive, expedited handling of buffered data

Non-destructive/expedited handling of buffered data.

í \K5, \K4

\K0, \K1

\K2, \K3

Local modem in command state, reliable or normal mode:

Non-destructive/non-expedited handling of buffered data.

Destructive/expedited handling of buffered data.

Non-destructive/expedited handling of buffered data.

í \K5, \K1, \K3

\K0, \K2, \K4

Local modem in connect state, direct mode:

Remote modem immediately returns break.

Remote modem immediately returns break, then goes into the command state.

 

í \K5, \K4

\K0, \K1

\K2, \K3

Local modem in connect state, normal mode, break received at modem port, break sent to serial port:

Non-destructive/non-expedited handling of buffered data.

Destructive/expedited handling of buffered data.

Non-destructive/expedited handling of buffered data.

\N - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] \Nn [cmds]

Example:

AT M3 \Nn D5555555<CR>

Description

Selects the error-correction mode.

Command

Function

í \N3

V.42 auto-reliable mode enabled.

\N0

Normal mode enabled.

\N1

Direct mode enabled.

\N2

MNP reliable mode enabled.

\N4

V.42 reliable mode enabled.

\N5

LAPM to normal mode enabled.

\O - PROPRIETARY COMMAND

Type:

Immediate

Format:

AT [cmds] \O

Example:

AT \O <CR>

Description

Commands the modem to originate a RELIABLE link.

 

\Q - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] \Qn [cmds]

Example:

AT M3 \Qn D5555555<CR>

Description

Selects options for serial port flow control.

Command

Function

í \Q3

Bi-directional hardware flow control enabled.

\Q0

Flow control disabled.

\Q1

Bi-directional XON/XOFF flow control enabled.

\Q2

One-way hardware flow control enabled.

\T - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] \Tn [cmds]

Example:

AT M3 \Tn D5555555<CR>

Description

Sets the limit for the inactivity time-out function in minutes,

Command

Function

í \T0

Inactivity time-out function disabled.

\T(1 to 90)

Sets the time limit (in minutes) at which the inactivity time-out function is enabled.

\U - PROPRIETARY COMMAND

Type:

Immediate

Format:

AT [cmds] \U

Example:

AT \U <CR>

Description

Commands the modem to grant an auto-reliable link request.

\V - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] \Vn [cmds]

Example:

AT M3 \Vn D5555555<CR>

Description

Enables/disables modified result codes.

Command

Function

í \V0

Normal result code format.

\V1

Append "/ARQ" to verbose CONNECT result codes during an error-control connection.

\X - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] \Xn [cmds]

Example:

AT M3 \Xn D5555555<CR>

Description

Selects the XON/XOFF pass-through mode.

\X - PROPRIETARY COMMAND

Command

Function

í \X0

Process flow control characters only.

\X1

Process flow control characters, then pass-through to the local or remote modem.

\Y - PROPRIETARY COMMAND

Type:

Immediate

Format:

AT [cmds] \Y

Example:

AT \Y <CR>

Description

Commands the modem to go into the RELIABLE mode.

\Z - PROPRIETARY COMMAND

Type:

Immediate

Format:

AT [cmds] \Z

Example:

AT \Z <CR>

Description

Commands the modem to go into the NORMAL mode.

-C - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] -Cn [cmds]

Example:

AT M3 -Cn D5555555<CR>

Description

Enables/disables calling tone in data mode.

Command

Function

í -C0

Calling tone disabled.

-C1

Calling tone enabled.

-J - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] -Jn [cmds]

Example:

AT M3 -Jn D5555555<CR>

Description

Enables/disables the V.42 detect phase.

Command

Function

í -J1

V.42 detect phase enabled.

-J0

V.42 detect phase disabled.

-V - PROPRIETARY COMMAND

Type:

Immediate

Format:

AT [cmds] -V

Example:

AT -V <CR>

Description

Commands the modem to display the firmware version.

 

"H - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] "Hn [cmds]

Example:

AT M3 "Hn D5555555<CR>

Description

Selects options for V.42bis data compression.

Command

Function

í "H3

V.42bis enabled for both transmission and reception of data.

"H0

V.42bis disabled.

"H1

V.42bis enabled for transmission of data only.

"H2

V.42bis enabled for reception of data only.

"O - PROPRIETARY COMMAND

Type:

Configuration

Format:

AT [cmds] "On [cmds]

Example:

AT M3 "On D5555555<CR>

Description

Sets the limit to the number of characters in the V.42bis character string. The limit can include any number from 6 to 250 characters. The default is 32.

S14 - PROPRIETARY BIT-MAPPED REGISTER

Value Range:

Bit-mapped

Default:

170

Type:

Read/Write

In Stored Profile?:

Yes

Description:

Bit-mapped configuration register.

Bit

Value

Function

0

í 0

Not used

1

í 1

0

Off-line echo enabled (E1).

Off-line echo disabled (E0).

2

í 0

1

Result codes enabled (Q0).

Result codes disabled (Q1).

3

í 1

0

Verbose result codes enabled (V1).

Numeric result codes enabled (V0).

4

í 0

1

Dumb mode disabled.

Dumb mode enabled.

5

í 1

0

Pulse dialing enabled (P).

Tone dialing enabled (T).

6

í 0

Not used.

7

í 1

0

Originate mode enabled.

Answer enabled.

 

S21 - PROPRIETARY BIT-MAPPED REGISTER

Value Range:

Bit-mapped

Default:

48

Type:

Read/Write

In Stored Profile?:

Yes

Description:

Bit-mapped configuration register.

Bit

Value

Function

0

í 0

Not used.

1

í 0

Not used.

2

í 0

1

CTS signal follows RTS signal (&R0).

CTS signal follows DCD signal (&R1).

4,3

í 10

00

01

11

Modem hangs up when a DTR signal is detected (&D2).

Modem ignores DTR signal (&D0).

Modem switches to command mode when a DTR signal is detected (&D1).

Modem resets to defaults when a DTR signal is detected (&D3).

5

í 1

0

DCD enabled when a carrier signal is detected, disabled when carrier signal is lost (&C1).

DCD enabled (&C0).

6

í 0

1

DSR enabled (&S0).

DSR enabled at handshake initiation and disabled at hang-up initiation (&S1).

7

í 0

1

Long-space disconnect function disabled (Y0).

Long-space disconnect function enabled (Y1).

S22 - PROPRIETARY BIT-MAPPED REGISTER

Value Range:

Bit-mapped

Default:

118

Type:

Read/Write

In Stored Profile?:

Yes

Description:

Bit-mapped configuration register.

Bit

Value

Function

1,0

í 10

00

01

11

Speaker set to medium volume (L2).

Not used.

Speaker set to low volume (L1 or L0).

Speaker set to high volume (L3).

S22 - PROPRIETARY BIT-MAPPED REGISTER

Bit

Value

Function

3,2

í 01

00

10

11

Speaker enabled while dialing, enabled until carrier signal is detected, then disabled (M1).

Speaker disabled (M0).

Speaker enabled (M2).

Speaker disabled while dialing, enabled until carrier signal is detected, then disabled (M3).

6,5,4

í 111

000

001

010

011

100

101

110

Full result codes, dial tone wait, and busy tone detect enabled (X4).

Basic result codes enabled, blind dialing only (X0).

Not used.

Not used.

Not used.

Full result codes enabled, blind dialing only (X1).

Full result codes and dial tone wait enabled (X2).

Full result codes enabled, blind dialing only, busy tone detect enabled (X3).

7

í 0

1

39/61 make/break ratio enabled (&P0).

33/67 make/break ratio enabled (&P1).

S23 - PROPRIETARY BIT-MAPPED REGISTER

Value Range:

Bit-mapped

Default:

15

Type:

Read/Write

In Stored Profile?:

Yes

Description:

Bit-mapped configuration register.

Bit

Value

Function

0

í 1

0

Grant remote loopback request (&T4).

Ignore remote loopback request (&T5).

3,2,1

í 111

000

010

011

100

101

110

38.4Kbps or 57.6Kbps data rate enabled.

0 - 600bps data rate enabled.

2400bps data rate enabled.

4800bps data rate enabled.

7200bps data rate enabled.

9600bps or 14.4Kbps data rate enabled.

19.2Kbps data rate enabled.

5,4

í 00

01

10

11

Even parity enabled.

Space parity enabled.

Odd parity enabled.

Parity disabled.

7,6

í 00

01

10

11

Guard tone disabled (&G0).

550Hz guard tone enabled (&G1).

1800Hz guard tone enabled (&G2).

Not used.

 

S27 - PROPRIETARY BIT-MAPPED REGISTER

Value Range:

Bit-mapped

Default:

0

Type:

Read/Write

In Stored Profile?:

Yes

Description:

Bit-mapped configuration register.

Bit

Value

Function

1,0

í 00

01

10

11

Asynchronous mode enabled (&Q0).

Synchronous connect mode and asynchronous off-line command mode enabled (&Q1).

Synchronous connect mode and asynchronous off-line command mode enabled (&Q1).

Synchronous mode enabled.

2

í 0

1

Switched network line mode enabled (&L0).

Leased-line mode enabled (&L1).

3

í 0

Not used.

5,4

í 00

01

10

11

Transmit clock generated by the modem (&X0).

DTE generates clock (&X1).

Modem generates clock from the receive carrier signal (&X2).

Not used.

6

í 0

1

CCITT V.22 protocol enabled (B0).

Bell 212A protocol enabled (B1).

7

í 0

Not used.