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CONNECTA 33.6K INTERNAL FAX MODEM (2420)

CARDINAL TECHNOLOGIES, INC.

CONNECTA 33.6K INTERNAL FAX MODEM (2420)

Card Type

Modem (synchronous/asynchronous)

Chip Set

TI

Maximum Modem Rate

33.6Kbps

Maximum Fax Rate

14.4Kbps

Data Modulation Protocol

Bell 103A/212A, ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34,

Fax Modulation Protocol

ITU-T V.17, V.21CH2, V.27ter, V.29

Error Correction/Compression

MNP5, V.42, V.42bis

Fax Class

Class I

Data Bus

8-bit ISA

Card Size

Half-length, half-height card

CONNECTIONS

Function

Label

Function

Label

Line in

CN1

Line out

CN2

PLUG & PLAY SELECTION

Setting

JP1

JP2

JP3

JP4

JP5

JP6

JP7

JP8

Plug & Play

Open

Open

Open

Open

Open

Open

Open

Open

SERIAL PORT ADDRESS

Setting

JP1

JP2

JP3

COM1 (3F8h)

Closed

Closed

Closed

COM2 (2F8h)

Open

Closed

Closed

COM3 (3E8h)

Closed

Open

Closed

COM4 (2E8h)

Open

Open

Closed

INTERRUPT

Setting

JP4

JP5

JP6

JP7

JP8

2

Closed

Open

Open

Open

Open

3

Open

Closed

Open

Open

Open

4

Open

Open

Closed

Open

Open

5

Open

Open

Open

Closed

Open

7

Open

Open

Open

Open

Closed

MISCELLANEOUS TECHNICAL NOTES

Note: The modem can be upgraded to 56Kbps via Flash ROM from Cardinal Technologies, Inc.

SUPPORTED COMMAND SET

Basic AT Commands

AT, +++, A/

A, B, E, F, H, M, O, P, T, V, X

&G, &T, &W, &Z

S Registers

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

 

Note: See MHI Help File for full command documentation.

PROPRIETARY AT COMMAND SET

ADDITIONAL RESULT CODES

Type:

Configuration

Format:

AT [cmds] &An [cmds]

Description:

Enables or disables additional result code subsets

Command

Function

&A0

ARQ result codes disabled

í &A1

ARQ result codes enabled

&A2

V.32 modulation indicator added

&A3

Protocol indicators added

BREAK HANDLING

Type:

Configuration

Format:

AT [cmds] &Yn [cmds]

Description:

Sets destructive/nondestructive break handling

Command

Function

&Y0

Destructive break not sent

&Y1

Expedited, destructive break sent

&Y2

Expedited, non-destructive break sent

DATA SET READY (DSR)

Type:

Configuration

Format:

AT [cmds] &Sn [cmds]

Description:

Selects DSR options

Command

Function

í &S0

DSR forced high

&S1

DSR high only while modem is handshaking or connected

CONNECTION SPEED LOWER LIMIT

Type:

Configuration

Format:

AT [cmds] &Un [cmds]

Description:

Sets slowest allowed connection speed if &N is set to 1 or higher.

Command

Function

&U0

No minimum connect speed.

&U1

Set minimum connect speed to 300bps.

&U2

Set minimum connect speed to 1200bps.

&U3

Set minimum connect speed to 2400bps.

&U4

Set minimum connect speed to 4800bps.

&U5

Set minimum connect speed to 7200bps.

&U6

Set minimum connect speed to 9600bps.

&U7

Set minimum connect speed to 12Kbps.

&U8

Set minimum connect speed to 14.4Kbps.

&U9

Set minimum connect speed to 16.8Kbps.

&U10

Set minimum connect speed to 19.2Kbps.

&U11

Set minimum connect speed to 21.6Kbps.

&U12

Set minimum connect speed to 24Kbps.

&U13

Set minimum connect speed to 26.4Kbps.

&U14

Set minimum connect speed to 28.8Kbps.

&U15

Set minimum connect speed to 31.2Kbps.

&U16

Set minimum connect speed to 33.6Kbps.

CONNECTION SPEED UPPER LIMIT

Type:

Configuration

Format:

AT [cmds] &Nn [cmds]

Description:

Sets required connection speed if &U is set to 0; otherwise, sets fastest allowed connection speed.

Command

Function

&N0

No maximum connect speed.

&N1

Fixed link rate of 300bps.

&N2

Fixed link rate of 1200bps.

&N3

Fixed link rate of 2400bps.

&N4

Fixed link rate of 4800bps.

&N5

Fixed link rate of 7200bps.

&N6

Fixed link rate of 9600bps.

&N7

Fixed link rate of 12Kbps.

&N8

Fixed link rate of 14.4Kbps.

&N9

Fixed link rate of 16.8Kbps.

&N10

Fixed link rate of 19.2Kbps.

&N11

Fixed link rate of 21.6Kbps.

&N12

Fixed link rate of 24Kbps.

&N13

Fixed link rate of 26.4Kbps.

&N14

Fixed link rate of 28.8Kbps.

&N15

Fixed link rate of 31.2Kbps.

&N16

Fixed link rate of 33.6Kbps.

DATA CARRIER DETECT (DCD)

Type:

Configuration

Format:

AT [cmds] &Cn [cmds]

Description:

Selects whether the DCD option is enabled or disabled

Command

Function

&C0

DCD override enabled

&C1

DCD enabled after carrier signal detected

DATA TERMINAL READY (DTR)

Type:

Configuration

Format:

AT [cmds] &Dn [cmds]

Description:

Selects modem response to DTR

Command

Function

&D0

DTR override

&D1

DTR toggle causes online command mode

í &D2

Normal DTR operations

&D3

Resets on receipt of DTR

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"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!

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/

Delays 125 ms. Before proceeding with dial string

D^

Calling tone enable/disable for current call only

D;

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

D&

Waiting for AT&T "bong" tone

DISCONNECT

Type:

Configuration

Format:

AT [cmds] Yn [cmds]

Description:

Commands disconnection configuration

Command

Function

Y0

Profile 0 in NVRAM

Y1

Profile 1 in NVRAM

ERROR CONTROL

Type:

Configuration

Format:

AT [cmds] &Mn [cmds]

Description:

Sets error control for connections at 1200bps and higher

Command

Mode

&M0

Error control disabled

&M1

Automatic selection of error control and non-error control

&M2

Enable error control link

&M3

Speaker on until modem connects

í &M4

Normal/ARQ mode.

&M5

ARQ mode

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

&F0

Standard factory configuration

&F1

Factory configuration1; hardware flow control template

&F2

Factory configuration 2; software flow control template

FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] &Kn [cmds]

Description:

Enables/disables flow control

Command

Line Type

&K0

Flow control disabled

&K1

Hardware, RTS/CTS flow control enabled

&K2

Software, XON/XOFF flow control enabled

í &K3

Transparent software, XON/XOFF flow control enabled

HELP

Type:

Immediate

Format:

n$

Description:

Displays help for commands.

Command

Function

$

Display help screen for single letter AT commands

&$

Display help screen for extended commands

D$

Display help screen for dial commands

S$

Display help screen for S-registers

PULSE DIALING RATIO

Type:

Configuration

Format:

AT [cmds] &Pn [cmds]

Description:

Selects pulse dial make/break ratio

Command

Function

&P0

39/61ms at 10pps (North America)

&P1

33/67ms at 10pps (Europe)

RECEIVE DATA FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] &In [cmds]

Description:

Enables RD flow control options

Command

Function

í&I0

Software flow control disabled

&I1

XON/XOFF signals passed through local modem

&I2

XON/XOFF signals trapped by local modem

REPEAT PREVIOUS COMMAND

Type:

Immediate

Format:

A>

Description:

Repeats previous command continuously.

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested

Command

Function

I0

Reports four digit product code

I1

Reports firmware checksum

I2

Reports RAM checksum

I3

Reports ID string

I4

Reports current modem settings

I5

Reports NVRAM settings

I6

Reports data connection information

I7

Reports manufacturer and model information

RESULT CODES

Type:

Configuration

Format:

AT [cmds] Qn [cmds]

Description:

Enables modem to send result codes to the DTE

Command

Function

íQ0

Result code sending enabled

Q1

Result code sending disabled

Q2

Result code sending only in originate mode

RTS

Type:

Configuration

Format:

AT [cmds] &Rn [cmds]

Description:

Selects RTS/CTS options

Command

Function

&R0

Reserved

í &R1

RTS ignored

&R2

Received data to computer only on RTS

SERIAL PORT RATE

Type:

Configuration

Format:

AT [cmds] &Bn [cmds]

Description:

Manages the serial port rate

Command

Function

í &B0

Serial speed follows connect speed

&B1

Serial speed locked

&B2

Fixed in ARQ mode, variable in non-ARQ mode

SOFT RESET

Type:

Immediate

Format:

AT [cmds] Zn [cmds]

Description:

Restores modem profiles previously saved in non-volatile RAM using the &W command.

Command

Function

Z0

Restore setting to profile selected by ATY command

Z1

Restore setting NVRAM profile 0

Z2

Restore setting NVRAM profile 1

Z3

Restores setting to factory default profile 0

Z4

Restores setting to factory default profile 1

Z5

Restores setting to factory default profile 2

TRANSMIT DATA FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] &Hn [cmds]

Description:

Enables TD flow control options

Command

Function

í &H0

Flow control disabled

&H1

CTS hardware flow control enabled

&H2

Software flow control enabled

&H3

Hardware and software flow control enabled

S(STATUS) -REGISTERS

BIT-MAPPED REGISTER S13

Format:

AT [cmds] S13=n [cmds]

Range:

0-174

Unit:

Bit-mapped

Description:

Controls reset, dial mode

Bit

Value

Function

0

0

1

Unidentified

Resets when DTR drops

1

0

1

Unidentified

Resets non-MNP transmit buffer from 1.5K to 128bytes

2

0

1

Unidentified

Sets backspace key to delete

3

0

1

Unidentified

On DTR signal, auto dials number stared at NVRAM position 0

4

0

1

Unidentified

At power on/reset, auto dials number stared at NVRAM position 0

5

0

1

Enables V.32bis ASL mode

Disables V.31bis ASL mode

6

0

1

Enables quick retrains

Disables quick retrains

7

0 1

Unidentified

Disconnect on escape code

BIT-MAPPED REGISTER S15

Format:

AT [cmds] S15=n [cmds]

Unit:

Bit-mapped

Description:

Disable/Enable MNP

Bit

Value

Function

0

0

1

Enable ARQ/MNP for V.22

Disable ARQ/MNP for V.22

1

0

1

Enable ARQ/MNP for V.22bis

Disable ARQ/MNP for V.22bis

2

0

1

Enable ARQ/MNP for V.32/V.32bis/V.32terbo

Enable ARQ/MNP for V.32/V.32bis/V.32terbo

3

0

1

Enable MNP handshake

Disable MNP handshake

4

0

1

Enable MNP level 4

Disable MNP level 4

5

0

1

Enable MNP level 3

Disable MNP level 3

6

0

1

MNP compatibility

MNP incompatibility

7

0 1

Enable V.42 operation

Disable V.42 operation

TEST MODES

Type:

Register

Format:

AT [cmds] S16=n [cmds]

Unit:

Bit-mapped

Description:

Controls touch tone dialing test.

Bit

Value

Function

0

0

Reserved

1

0

1

Touch tone dialing test not in progress

Touch tone dialing test in progress

2

0

1

Test pattern generation not in progress

Test pattern generation in progress

3-7

0

Reserved

INACTIVITY TIMER

Type:

Register

Format

AT [cmds] S19=n [cmds]

Unit:

10 seconds

Description:

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

Note: S19=0 disables the timer and allows indefinite inactivity.

BREAK LENGTH

Type:

Register

Format

AT [cmds] S21=n [cmds]

Unit:

10ms

Description:

Sets duration of breaks sent from the modem to the computer

Note: Applies to MNP or V.42 mode only.

FLOW CONTROL CHARACTER - XON

Type:

Register

Format:

AT [cmds] S22=n [cmds]

Range:

0-255

Unit:

ASCII

Description:

Sets the character used to represent XON

FLOW CONTROL CHARACTER - XOFF

Type:

Register

Format:

AT [cmds] S23=n [cmds]

Range:

0-255

Unit:

ASCII

Description:

Sets the character used to represent XOFF

BIT-MAPPED REGISTER S27

Format

AT [cmds] S27=n [cmds]

Range:

0-255

Unit:

Bit-mapped

Description:

Enables/disables modulation protocols

Bit

Value

Function

0

0

1

Disable ITU-T modulation at 300bps for overseas calls: in V.21 mode, the modem answers both overseas and domestic calls, but only originates V.21 calls

Enable ITU-T modulation at 300bps for overseas calls: in V.21 mode, the modem answers both overseas and domestic calls, but only originates V.21 calls

1

0

1

Disable unencoded modulation in V.32 mode

Enable unencoded modulation in V.32 mode

2

0

1

Enable V.32 modulation

Disable V.32 modulation

3

0

1

Enable 2100Hz answer tone

Disable 2100Hz answer tone

4

0

1

Disable V.23 fallback mode

Enable V.23 fallback mode

5

0

1

Enable V.32bis mode

Disable V.32bis mode

6

0

Reserved

7

0 1

Enable codes

Disable codes and enters software compatibility mode

CONNECTION TIME

Type:

Register

Format

AT [cmds] S28=n [cmds]

Unit:

.1 second

Description:

Sets V.32 duration

Command

Function

S28=0

Eliminates the V.32 answer tone for a faster connection

S28=8

Times are in .1 second

S28=255

Disable connections except V.32 at 9600bps

FALLBACK TIMER

Type:

Register

Format

AT [cmds] S29=n [cmds]

Range:

0-255

Unit:

.01 second

Description:

Sets the duration of the V.21 answer mode fallback timer

BIT-MAPPED REGISTER S32

Format:

AT [cmds] S32=n [cmds]

Range:

0-255

Description:

Select setup for 28.8 and higher speed modems

Bit

Value

Function

0

0

1

Disable V.8 call indicate

Enable V.8 call indicate

1

0

1

Disable V.8 mode

Enable V.8 mode

2

0

1

Enable V.FC modulation

Disable V.FC modulation

3

0

1

Enable V.34 modulation

Disable V.34 modulation

4

0

1

Enable V.34+ modulation

Disable V.34+ modulation

5-7

0

Reserved

BIT-MAPPED REGISTER S33

Format:

AT [cmds] S33=n [cmds]

Range:

0-255

Description:

Disable/enable data rates

Bit

Value

Function

0

0

1

Enable 2400 symbol rate

Disable 2400 symbol rate

1

0

1

Enable 2743 symbol rate

Disable 2743 symbol rate

2

0

1

Enable 2800 symbol rate

Disable 2800 symbol rate

3

0

1

Enable 3000 symbol rate

Disable 3000 symbol rate

4

0

1

Enable 3200 symbol rate

Disable 3200 symbol rate

5

0

1

Enable 3429 symbol rate

Disable 3429 symbol rate

6

0

Reserved

7

0

1

Enable shaping

Disable shaping

BIT-MAPPED REGISTER S34

Format:

AT [cmds] S34=n [cmds]

Range:

0-255

Description:

Disable/enable trellis encoding

Bit

Value

Function

0

0

1

Enable 8S-2D trellis encoding

Disable 8S-2D trellis encoding

1

0

1

Enable 16S-4D trellis encoding

Disable 16S-4D trellis encoding

2

0

1

Enable 32S-2D trellis encoding

Disable 32S-2D trellis encoding

3

0

1

Enable 64S-4D trellis encoding

Disable 64S-4D trellis encoding

4

0

Reserved

5

0

1

Enable TX level deviation

Disable TX level deviation

6

0

1

Enable pre-emphasis

Disable pre-emphasis

7

0

1

Enable pre-coding

Disable pre-coding

BIT-MAPPED REGISTER S41

Format:

AT [cmds] S41=n [cmds]

Range:

0-255

Description:

Enable/disable distinctive ring

Bit

Value

Function

0

0

1

Disable distinctive ring

Enable distinctive ring

1-7

0

Reserved