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VIVA 28.8 INTERNAL DATA/FAX

COMPUTER PERIPHERALS, INC.

VIVA 28.8 INTERNAL DATA/FAX

Modem Type

Data (asynchronous)/Fax

Maximum Data Rate

28.8Kbps

Maximum Fax Rate

14.4Kbps

Data Bus

8-bit ISA

Fax Class

Class I

Data Modulation Protocol

Bell 103A/212A

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

Rockwell V.FC

Fax Modulation Protocol

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

Error Correction/Compression

MNP5, V.42, V.42bis

CONNECTIONS

Purpose

Location

Purpose

Location

Line out

CN1

Line in

CN2

BASE I/O ADDRESS SELECTION

Port

SW1/1

SW1/2

COM1: (3F8h)

On

On

COM2: (2F8h)

Off

On

COM3: (3E8h)

On

Off

COM4: (2E8h)

Off

Off

INTERRUPT SELECTION

IRQ

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

3

On

Off

Off

Off

Off

Off

4

Off

On

Off

Off

Off

Off

5

Off

Off

On

Off

Off

Off

7

Off

Off

Off

Off

On

Off

Proprietary AT Command Set

ACCEPT AUTO-RELIABLE MODE

Type:

Immediate

Format:

AT [cmds] \U [cmds]

Description:

Accepts remote modem’s request for reliable link

AUTO FALL FORWARD/FALLBACK

Type:

Configuration

Format:

AT [cmds] %Gn [cmds]

Description:

Selects auto fallback

Command

Function

» %G0

Fallback disabled

%G1

Fallback enabled

AUTO-RELIABLE FALLBACK CHARACTER

Type:

Configuration

Format:

AT [cmds] %An [cmds]

Default:

Unidentified

Range:

0-127

Unit:

ASCII

Description:

Sets the character used as the auto-reliable fallback character. %A0 will disable this function.

AUTO-RELIABLE TIME BUFFER CONFIGURATION

Type:

Configuration

Format:

AT [cmds] \Cn [cmds]

Description:

Controls the handling of incoming data during auto-reliable time period

Command

Function

» \CO

Data is discarded

\C1

Data is buffered

\C2

Data is discarded, sets to normal mode and sends auto-reliable character to serial port.

AUTO-RETRAIN

Type:

Configuration

Format:

AT [cmds] %En [cmds]

Description:

Selects auto-retrain mode

Command

Function

» %E0

Auto-retrain disable.

%E1

Auto-retrain enabled

BIT-MAPPED REGISTER S14

Format

AT [cmds] S14? [cmds]

Default:

Read-only

Range:

0-255

Unit:

Bit-mapped

Description:

Displays echo, result codes, result code display, dial mode, and answer/originate mode.

Bit

Value

Function

0

0

Not used

1

0

1

Command echo disabled

Command echo enabled

2

0

1

Result codes enabled

Result codes disabled

3

0

1

Display result codes in numeric format

Display result codes in verbose format

4

0

Not used

5

0

1

Tone dial enabled

Pulse dial enabled

6

0

Not used

7

0

1

Answer mode enabled

Originate mode enabled

BIT-MAPPED REGISTER S21

Format

AT [cmds] S21? [cmds]

Default:

Read-only

Range:

0-255

Unit:

Bit-mapped

Description:

Displays jack type, CTS signal, low DTR action, DCD signal, DSR signal, and the long space disconnect function.

Bit

Value

Function

0

0

1

Selects RJ-11, RJ-41S, or RJ45S jack

Selects RJ-12 or RJ-13 jack

1

0

Not used

2

0

1

CTS follows RTS

CTS forced high

4, 3

00

01

10

11

DTR signal ignored

Modem goes to command mode on low DTR

Modem disconnects on low DTR. Auto-Answer is disabled

Modem is initialized on low DTR

5

0

1

DCD forced high

DCD normal

6

0

1

DSR forced high

DSR normal

7

0

1

Long space disconnect function disabled

Long space disconnect function enabled

BIT-MAPPED REGISTER S22

Format

AT [cmds] S22? [cmds]

Default:

Read-only

Range:

0-255

Unit:

Bit-mapped

Description:

Displays speaker volume and controls, limits results codes, and make/break pulse ratio.

Bit

Value

Function

1, 0

01

10

11

On volume

Medium level volume

High level volume

3, 2

00

01

10

11

Speaker off

Speaker off on carrier

Speaker always on

Speaker on during handshake

6, 5, 4

000

100

101

110

111

Basic result codes only enabled

Basic and connection speed result codes enabled

Basic and connection speed result codes and dialtone detection enabled

All result codes except dialtone detection enabled

All result codes enabled

7

0

1

39/61ms at 10pps (North America)

33/67ms at 10pps (Europe)

BIT-MAPPED REGISTER S23

Format

AT [cmds] S23? [cmds]

Default:

Read-only

Range:

0-255

Unit:

Bit-mapped

Description:

Displays remote digital loopback, DTE rate and parity, and guard tone.

Bit

í Value

Function

0

0

1

Remote digital loopback denied

Remote digital loopback allowed

3, 2, 1

000

001

010

011

100

101

110

111

Sets serial port speed to 0-300bps

Sets serial port speed to 600bps

Sets serial port speed to 1200bps

Sets serial port speed to 2400bps

Sets serial port speed to 4800bps

Sets serial port speed to 9600bps

Sets serial port speed to 19200bps

Sets serial port speed to 38400bps

5,4

01

Space Parity/No Parity

7, 6

00

01

10

Guard tone disabled

Guard tone 550Hz enabled

Guard tone 1800Hz enabled

BIT-MAPPED REGISTER S27

Format

AT [cmds] S27? [cmds]

Default:

Read-only

Range:

0-255

Unit:

Bit-mapped

Description:

Displays synchronous/asynchronous mode, Line type, clock source, and ITU-T/Bell modes.

Bit

í Value

Function

3, 1, 0

000

001

010

011

100

Asynchronous mode, serial port speed follows connect speed

Asynchronous command mode and synchronous connect mode

Asynchronous command mode and synchronous connect mode

Asynchronous command mode on low DTR, synchronous connect mode on high DTR

Hayes AutoSync™ mode

2

0

1

Dial up line

Leased line

5, 4

00

01

10

Internal transmit clock source

External transmit clock source

Remote transmit clock source

6

0

1

CCITT mode

Bell mode

BREAK SEND

Type:

Configuration

Format:

AT [cmds] \Bn [cmds]

Default:

Unidentified

Range:

0-9

Unit:

.1 second

Description:

Sends break to modem

BREAK TYPE

Type:

Configuration

Format:

AT [cmds] \Kn [cmds]

Description:

Configures action of break signal

Command

Break from DTE

Modem receives \B

Break received from remote modem

\K0

Online command mode enabled, send no break to remote modem

Break sent to remote modem and buffered cleared

Buffers cleared, break sent to DTE

\K1

Break sent to remote modem and buffered cleared

Break sent to remote modem and buffered cleared

Buffers cleared, break sent to DTE

\K2

Online command mode enabled, send no break to remote modem

Send break to remote modem immediately

Break sent immediately to DTE

\K3

Send break to remote modem immediately

Send break to remote modem immediately

Break sent immediately to DTE

\K4

Online command mode enabled, send no break to remote modem

Send break with transmitted data

Break sent with received data to the DTE

» \K5

Send break with transmitted data

Send break with transmitted data

Break sent with received data to the DTE

CALLING TONE

Type:

Configuration

Format:

AT [cmds] -Cn [cmds]

Description:

Controls whether the DTE will allow the modem to send a 1300Hz calling tone when originating.

Command

Function

» -C0

Disable calling tone

-C1

Enable calling tone

COMPRESSION

Type:

Configuration

Format:

AT [cmds] %Cn [cmds]

Description:

Selects data compression

Command

Function

%C0

Data compression disabled

» %C1

Data compression enabled

CONNECT MODE

Type:

Configuration

Format:

AT [cmds] \Nn [cmds]

Description:

Sets connect mode

Command

Function

\N0

Normal mode enabled

\N1

Direct mode enabled

\N2

Reliable mode enabled

» \N3

Auto-reliable mode enabled

\N4

LAPM mode enabled

\N5

MNP mode enabled

CONVERT TO RELIABLE MODE

Type:

Immediate

Format:

AT [cmds] \Y [cmds]

Description:

Initiates reliable mode link

EXTENDED RESULT CODES

Type:

Configuration

Format:

AT [cmds] \Vn [cmds]

Description:

Selects extended result codes

Command

Function

\V0

Extended result codes disabled

\V1

MNP extended result codes enabled

\V2

V.42 extended result codes enabled

FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] \Gn [cmds]

Description:

Selects modem port flow control

Command

Function

» \G0

Flow control disabled

\G1

Flow control enabled

FLOW CONTROL TYPE

Type:

Configuration

Format:

AT [cmds] \Qn [cmds]

Description:

Sets type of flow control used by modem

Command

Function

\Q0

Flow control disabled

\Q1

XON/XOFF flow control enabled

\Q2

CTS flow control to DTE enabled

» \Q3

RTS/CTS flow control enabled

INACTIVITY TIMER

Type:

Configuration

Format:

AT [cmds] \Tn [cmds]

Default:

0

Range:

0-90

Unit:

1 minute

Description:

Sets the length of time that the modem does not receive information before it disconnects.

INACTIVITY TIMER

Type:

Register

Format:

AT [cmds] S90=n [cmds]

Default:

0

Range:

0-255

Unit:

1 minute

Description:

Sets the length of time that the modem does not receive information before it disconnects. S90=0 will disable.

LINE SIGNAL QUALITY

Type:

Configuration

Format:

AT [cmds] %Qn [cmds]

Default:

Unidentified

Range:

0-255

Description:

Sets the line quality at which the modem will retrain. If the line quality drops below n, the modem will retrain.

LOCK SERIAL PORT

Type:

Configuration

Format:

AT [cmds] \Jn [cmds]

Description:

Sets operation of serial port speed

Command

Function

» \J0

Serial speed locked

\J1

Serial speed follows connect speed

MODULATION SELECTION

Type:

Configuration

Format:

AT [cmds] +MS=xx,y,zzz,aaa [cmds]

Example:

AT+MS10,0,4800,26400<CR>

Description:

Sets options for active protocol. The transfer rates specified by z and a must be valid for the protocol selected.

Command

Function

x=0

V.21

x=1

V.22

x=2

V.22bis

x=3

V.23 1200/75

x=8

V.32

x=9

V.32bis

» x=10

V.34

x=13

V.23 75/1200

x=64

Bell 103A

x=69

Bell 212A

x=74

V.FC

y=0

Automode disabled

y=1

Auto-detect highest speed enabled without V.8 (except for V.34)

» y=2

Auto-detect highest speed enabled with V.8

z, a=300

Set minimum or maximum transfer rate at 300bps, respectively.

z, a=1200

Set minimum or maximum transfer rate at 1200bps, respectively.

z, a=2400

Set minimum or maximum transfer rate at 2400bps, respectively.

z, a=4800

Set minimum or maximum transfer rate at 4800bps, respectively.

z, a=9600

Set minimum or maximum transfer rate at 9600bps, respectively.

z, a=12000

Set minimum or maximum transfer rate at 12000bps, respectively.

z, a=14400

Set minimum or maximum transfer rate at 14400bps, respectively.

z, a=16800

Set minimum or maximum transfer rate at 16800bps, respectively.

z, a=19200

Set minimum or maximum transfer rate at 19200bps, respectively.

z, a=21600

Set minimum or maximum transfer rate at 21600bps, respectively.

z, a=24000

Set minimum or maximum transfer rate at 24000bps, respectively.

z, a=26400

Set minimum or maximum transfer rate at 26400bps, respectively.

z, a=28800

Set minimum or maximum transfer rate at 28800bps, respectively.

MODULATION SELECTION DISPLAY

Type:

Immediate

Format:

AT [cmds] +MS? [cmds]

Description:

Displays modulation, automode, minimum rate and maximum rate settings

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

\A1

MNP block size is 128 characters

\A2

MNP block size is 192 characters

» \A3

MNP block size is 256 characters

ON-LINE IN RELIABLE MODE

Type:

Immediate

Format:

AT [cmds] \O [cmds]

Description:

Returns to on-line and requests reliable mode connection

SWITCH TO NORMAL MODE

Type:

Immediate

Format:

AT [cmds] \Z [cmds]

Description:

Switches to normal mode from MNP mode

TEST MODES

Format

AT [cmds] S16? [cmds]

Default:

Read-only

Range:

0-255

Unit:

Bit-mapped

Description:

Displays loopback tests, analog, digital, remote digital, and self tests.

Bit

Value

Function

0

0

1

Local analog loopback not in progress

Local analog loopback in progress

1

0

Not used

2

0

1

Local digital loopback not in progress

Local digital loopback in progress

3

0

1

Modem not in remote digital loopback

Remote digital loopback in progress

4

0

1

Remote digital loopback not requested

Remote digital loopback requested

5

0

1

Remote digital loopback w/ self-test not in progress

Remote digital loopback w/ self-test in progress

6

0

1

Local analog loopback w/ self-test not in progress

Local analog loopback w/ self-test in progress

V.42bis COMPRESSION CONTROL

Type:

Configuration

Format:

AT [cmds] "Hn [cmds]

Description:

Controls V.42bis data compression

Command

Function

"H0

V.42bis disabled

"H1

V.42bis when transmitting enabled

"H2

V.42bis when receiving enabled

» "H3

V.42bis when transmitting/receiving enabled

V.42 DETECTION PHASE

Type:

Configuration

Format:

AT [cmds] -Jn [cmds]

Description:

Controls V.42 detection

Command

Function

-J0

V.42 detection disabled

» -J1

V.42 detection enabled

V.42bis MAXIMUM STRING LENGTH

Type:

Configuration

Format:

AT [cmds] "O=n [cmds]

Default:

16

Range:

6-250

Unit:

1 ASCII character

Description:

Selects string size for V.42bis compression

XON/XOFF PASS-THROUGH

Type:

Configuration

Format:

AT [cmds] \Xn [cmds]

Description:

Selects whether XON/XOFF signals are sent to remote modem

Command

Function

\X0

XON/XOFF signals trapped by local modem

\X1

XON/XOFF passed through local modem