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VIVA 28.8 EXTERNAL DATA/FAX

COMPUTER PERIPHERALS, INC.

VIVA 28.8 EXTERNAL DATA/FAX

Modem Type

Data (synchronous/asynchronous)/Fax

Maximum Data Rate

28.8Kbps

Maximum Fax Rate

14.4Kbps

Data Bus

External

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, MNP10, V.42, V.42bis

CONNECTIONS

Purpose

Location

Purpose

Location

Line out

CN1

DC power

CN4

Line in

CN2

Power switch

SW1

RS-232/422

CN3

   

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

HS

Red

On

Modem is operating at 2400bps

HS

Red

Off

Modem is operating at slower than 2400bps

AA

Red

On

Auto-answer enabled

AA

Red

Off

Auto-answer disabled

AA

Red

Blinking

Phone is ringing

CD

Red

On

Carrier signal detected

CD

Red

Off

Carrier signal not detected

OH

Red

On

Modem is off-hook

OH

Red

Off

Modem is on-hook

RD

Red

On

Modem is receiving data

RD

Red

Off

Modem is not receiving data

SD

Red

On

Modem is transmitting data

SD

Red

Off

Modem is not transmitting data

TR

Red

On

DTR signal is high

TR

Red

Off

DTR signal is low

MR

Red

On

Power is on

MR

Red

Off

Power is off

Note: The LEDs are Icons

Proprietary AT Command Set

AUTO FALL FORWARD/FALLBACK

Type:

Configuration

Format:

AT [cmds] %Gn [cmds]

Description:

Selects auto fallback

Command

Function

%G0

Fallback disabled

%G1

Fallback enabled

AUTO-RETRAIN - FALLBACK/FALLFORWARD

Type:

Configuration

Format:

AT [cmds] %En [cmds]

Description:

Controls auto-retrain mode and fallback/fall forward

Command

Function

%E0

Auto-retrain disabled

%E1

Auto-retrain enabled

%E2

Fallback/fall forward enabled

%E3

Auto-retrain enabled, modem hangs up when line quality deteriorates.

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

00

01

10

11

On volume

Low level 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

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

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

0

Not used

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

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

BIT-MAPPED REGISTER S28

Format

AT [cmds] S28=n [cmds]

Default:

Read-only

Range:

0-255

Unit:

Bit-mapped

Description:

Displays V.23 split baud mode, V.23 speed/direction, pulse dialing, and MNP10 link negoiation.

Bit

Value

Function

0

0

1

V.23 split baud mode disabled

V.23 split baud mode enabled

1

0

1

Select 75bps transmit, 1200bps receive

Select 1200bps transmit, 75bps receive

2

0

Not used

4, 3

00

01

10

11

39ms make/61ms break at 10pps

33ms make/67ms break at 10pps

39ms make/61ms break at 20pps

33ms make/67ms break at 20pps

5

0

Not used

7, 6

00

01

10

Link will be negotiated at highest possible speed

Link will be negotiated at 1200bps

Link will be negotiated at 4800bps

BIT-MAPPED REGISTER S31

Format

AT [cmds] S31=n [cmds]

Default:

Read-only

Range:

0-255

Unit:

Bit-mapped

Description:

Displays auto-baud function and result codes.

Bit

Value

Function

0

0

Not used

1

0

1

Auto-baud disabled

Auto-baud enabled

3, 2

00

01

10

DTE speed displayed in result codes

Extended result codes enabled; DCE speed displayed in result codes.

DCE speed displayed in result codes

BIT-MAPPED REGISTER S40

Format

AT [cmds] S40=n [cmds]

Default:

Read-only

Range:

0-255

Unit:

Bit-mapped

Description:

Displays MNP10 services, break control, and MNP block size.

Bit

Value

Function

1, 0

00

01

10

MNP10 disabled

MNP10 enabled

MNP10 enabled on originate mode only

0

0

1

MNP10 disabled

MNP10 enabled

1

0

1

MNP10 at 2400 and 1200bps disabled

MNP10 at 2400 and 1200bps enabled

2

0

1

Power level adjustment disabled

Power level adjustment enabled

5 - 3

000

001

010

100

101

110

\K0

\K1

\K2

\K3

\K4

\K5

7, 6

00

01

10

11

MNP block size is 64 characters

MNP block size is 128 characters

MNP block size is 192 characters

MNP block size is 256 characters

BIT-MAPPED REGISTER S41

Format

AT [cmds] S41=n [cmds]

Default:

Read-only

Range:

0-255

Unit:

Bit-mapped

Description:

Displays compression, auto-retrain, flow control, stream/block mode and MNP10 fallback.

Bit

Value

Function

1, 0

00

01

10

11

Data compression disabled

MNP5 enabled

V.42bis enabled

MNP5 and V.42bis enabled

6, 2

00

01

10

Auto-retrain disabled

Auto-retrain enabled

%E2

3

0

1

Flow control disabled

Flow control enabled

4

0

1

Stream mode for MNP

Block mode for MNP

7

0

1

MNP10 at 2400 and 1200bps disabled

MNP10 at 2400 and 1200bps enabled

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

CELLULAR TRANSMISSION LEVEL

Type:

Register

Format:

AT [cmds] S201=n [cmds]

Default:

10

Range:

0-15

Unit:

-1 dBm

Description:

Controls cellular transmission level

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

%C3

Both MNP5 AND V.42bis enabled

COMPROMISE EQUALIZER

Type:

Configuration

Format:

AT [cmds] :En [cmds]

Description:

Controls V.32 compromise equalizer

Command

Function

:E0

Equalizer disabled

:E1

Equalizer 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

FAX TRANSMISSION LEVEL

Type:

Register

Format:

AT [cmds] S92=n [cmds]

Default:

10

Range:

0-15

Unit:

-1 dBm

Description:

Controls fax transmission level

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 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

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

LEASED LINE TRANSMISSION LEVEL

Type:

Register

Format:

AT [cmds] S99=n [cmds]

Default:

10

Range:

0-15

Unit:

-1 dBm

Description:

Controls leased-line transmission level

LINE SIGNAL LEVEL

Type:

Immediate

Format:

AT [cmds] %L [cmds]

Range:

9-43

Unit:

-1dBm

Description:

Returns received line signal level

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

MNP10 COMPRESSION

Type:

Configuration

Format:

AT [cmds] -Kn [cmds]

Description:

Selects MNP10 data compression

Command

Function

-K0

MNP10 disabled

-K1

MNP10 enabled

-K2

MNP10 enabled on originate mode only

MNP10 FALL-BACK

Type:

Configuration

Format:

AT [cmds] -Qn [cmds]

Description:

Allows MNP10 to fall back to speeds slower than 4800bps

Command

Function

-Q0

MNP10 at 2400 and 1200bps disabled

-Q1

MNP10 at 2400 and 1200bps enabled

MNP10 LINK NEGOTIATION

Type:

Configuration

Format:

AT [cmds] *Hn [cmds]

Description:

Sets the speed at which MNP10 link negotiation will occur

Command

Function

*H0

Link will be negotiated at highest possible speed

*H1

Link will be negotiated at 1200bps

MNP10 POWER LEVEL ADJUST

Type:

Configuration

Format:

AT [cmds] )Mn [cmds]

Description:

Controls automatic transmit power level adjustment during MNP 10 link negotiation

Command

Function

)M0

Power level adjustment disabled

)M1

Power level adjustment enabled

REMOTE ACCESS ESCAPE CHARACTER

Type:

Register

Format:

AT [cmds] S202=n [cmds]

Default:

Unidentified

Range:

0-255

Unit:

ASCII

Description:

Sets the remote access escape character

REPORT LINE SIGNAL QUALITY

Type:

Immediate

Format:

AT [cmds] %Q [cmds]

Description:

Returns line signal quality

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

SWITCHED TRANSMISSION LEVEL

Type:

Register

Format:

AT [cmds] S91=n [cmds]

Default:

10

Range:

0-15

Unit:

-1 dBm

Description:

Controls switched transmission level

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

TRANSMISSION LEVEL

Type:

Configuration

Format:

AT [cmds] @Mn [cmds]

Default:

Unidentified

Range:

11-31

Unit:

-1 dBm

Description:

Sets initial transmit power level for transmission

í Command

Function

@M0

-26dBm

@M1

-30dBm

@M2-@M10

-10dBm