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14400BPS FAXMODEM (INTERNAL)

ZOOM TELEPHONICS, INC.

14400BPS FAXMODEM (INTERNAL)

Card Type

Fax, Modem (asynchronous)

Chip Set

Unidentified

Maximum Data Rate

14.4Kbps

Maximum Fax Rate

14.4Kbps

Data Bus

8-bit ISA

Fax Class

Class I & II

Data Modulation Protocol

Bell 103/212A

ITU-T V.21, V.22A/B, V.22bis, V.23, V.32, V.32bis

Fax Modulation Protocol

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

Error Correction/Compression

MNP5, V.42, V.42bis

CONNECTIONS

Function

Label

Function

Label

Line in

CN1

Line out

CN2

SERIAL PORT ADDRESS/INTERRUPT SELECTION

Setting

IRQ

JP1

JP2

COM1 (3F8h)

4

Pins 3 & 5, 4 & 6 closed

Pins 1 & 3 closed

COM2 (2F8h)

3

Pins 2 & 4, 3 & 5 closed

Pins 2 & 4 closed

COM3 (3E8h)

4

Pins 1 & 3, 4 & 6 closed

Pins 1 & 3 closed

í COM4 (2E8h)

3

Pins 1 & 3, 2 & 4 closed

Pins 2 & 4 closed

COM5 (3E8h)

2

Pins 1 & 3, 4 & 6 closed

Pins 4 & 6 closed

COM6 (2E8h)

2

Pins 1 & 3, 2 & 4 closed

Pins 4 & 6 closed

COM7 (3E8h)

5

Pins 1 & 3, 4 & 6 closed

Pins 3 & 5 closed

COM8 (2E8h)

5

Pins 1 & 3, 2 & 4 closed

Pins 3 & 5 closed

Proprietary AT Command Set

AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD

Type:

Configuration

Format:

AT [cmds] %En [cmds]

Description:

Controls auto-retrain mode and fallback/fall-forward

Command

Function

í %E0

Auto-retrain disabled

%E1

Auto-retrain enabled

%E2

Auto-fallback/fall-forward enabled

%E3

Auto-fallback/fall-forward with fast hang-up enabled

BIT MAPPED REGISTERS

Register

Default

S14

Unidentified

S16

Unidentified

S21

Unidentified

S22

Unidentified

S23

Unidentified

S27

Unidentified

S28

Unidentified

S31

Unidentified

S40

Unidentified

S41

Unidentified

BREAK SEND

Type:

Configuration

Format:

AT [cmds] \Bn [cmds]

Default:

3

Range:

1-9

Unit:

.1 second

Description:

Sends break to modem

BREAK TYPE

Type:

Configuration

Format:

AT [cmds] \Kn [cmds]

Default:

Unidentified

Range:

Unidentified

Description:

Configures action of break signal

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.

Modifier

Function

L

Re-dial last number

P

Pulse dialing enabled

R

Command accepted, not acted upon.

S=n

Dial stored telephone number n (n=0-3)

T

Tone dialing enabled

W

Dialing resumed following dial tone detection

,

Dialing paused for amount of time specified in S8 register

@

Wait for 5 seconds of silence

;

Modem returned to command state after dialing

!

Modem commanded to go off-hook for specified time before returning on-hook.

^

Calling tone enabled

COMPRESSION

Type:

Configuration

Format:

AT [cmds] %Cn [cmds]

Description:

Selects data compression

Command

Function

%C0

Data compression disabled

%C1

MNP5 enabled

%C2

V.42bis enabled

í %C3

MNP5 and V.42bis enabled

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

í \N3

Auto-reliable mode enabled

\N4

V.42 reliable mode enabled

\N5

MNP reliable mode enabled

FLASH DIAL MODIFIER TIME

Type:

Register

Format

AT [cmds] S29=n [cmds]

Default:

0

Range:

0-255

Unit:

.01 second

Description:

Time the modem will go on-hook upon receiving the ! dial modifier in dial string. S29=0 will disable.

FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] \Gn [cmds]

Description:

Selects modem port flow control

Command

Function

í \G0

Flow control disabled

\G1

Flow control enabled

FLOW CONTROL

Type:

Read-only Register

Format

AT [cmds] S39? [cmds]

Description:

Displays the current flow control

Value

Meaning

0

Flow control disabled

í 3

RTS/CTS flow control enabled

4

XON/XOFF flow control enabled

5

Transparent XON flow control enabled

6

Transparent XON/XOFF flow control enabled

FLOW CONTROL CHARACTER - XOFF

Type:

Register

Format:

AT [cmds] S33=n [cmds]

Default:

19

Range:

0-255

Unit:

ASCII

Description:

Sets the character used to represent XOFF

FLOW CONTROL CHARACTER - XON

Type:

Register

Format:

AT [cmds] S32=n [cmds]

Default:

17

Range:

0-255

Unit:

ASCII

Description:

Sets the character used to represent XON

INACTIVITY TIMER

Type:

Register

Format:

AT [cmds] S30=n [cmds]

Default:

0

Range:

0-255

Unit:

10 seconds

Description:

Sets the length of time that the modem does not receive information before it disconnects. S30=0 will disable timer.

LINE SIGNAL LEVEL

Type:

Immediate

Format:

AT [cmds] %L [cmds]

Description:

Returns a value which indicates the received line signal level (-dBm)

LINE SIGNAL QUALITY

Type:

Immediate

Format:

AT [cmds] %Q [cmds]

Description:

Returns a value which indicates line signal quality

MAXIMUM BLOCK SIZE FOR TRANSMISSION

Type:

Configuration

Format:

AT [cmds] \An [cmds]

Description:

Sets the maximum transmittable block size

Command

Function

\A0

MNP block size is 64 characters

í \A1

MNP block size is 128 characters

\A2

MNP block size is 192 characters

\A3

MNP block size is 256 characters

MNP - STREAM/BLOCK MODE

Type:

Configuration

Format:

AT [cmds] \Ln [cmds]

Description:

Selects the transfer mode for MNP link

Command

Function

í \L0

Stream mode for MNP enabled

\L1

Block mode for MNP enabled

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested

Command

Function

I0

Reports 3-digit product code

I1

Reports ROM checksum

I2

Tests and reports ROM checksum

I3

Reports firmware revision code

I4

Reports faxmodem identifier string

I5

Reports country code

I6

Reports data pump model and revision code

SLEEP TIMER

Type:

Register

Format

AT [cmds] S24=n [cmds]

Default:

0

Range:

0-255

Unit:

1 second

Description:

Maximum duration of DTE and DCE inactivity allowed prior to initiating low-power sleep mode.