Black Box Tote-a-Fax 542 Manual de usuario

CUSTOMER

SUPPORT

INFORMATION

Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX

FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746

Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018

Web site: www.blackbox.com • E-mail: [email protected]

MARCH 1992

FX119A

Tote-a-Fax 542

TOTE-A-FAX

DATA SPEED

FAX SPEED

CARRIER DETECT

LOW BATTERY

CHAPTER 4: OperationTOTE-A-FAX 542

Tote-A-Fax 542

Installation and Operation Manual

FCC REQUIREMENTS

This equipment complies with FCC Rules Part 68. Located on the equipment is the FCC

Registration Number and Ringer Equivalence Number (REN). You must provide this

information to the telephone company if requested.

The Registration Number and REN will be inscribed on the printed circuit board on insert cards

or on a label affixed to the chassis bottom. The FCC requires these numbers be prominently

displayed on an outside surface of the device.

The REN is used to determine the number of devices you may legally connect to your

telephone line. In most areas, the sum of the REN of all devices connected to one line must not

exceed five (5.0). Contact your telephone company to determine the maximum REN for your

calling area.

The telephone company may change technical operations or procedures; these changes may

affect your equipment. You will be notified of changes in advance; this will give you the

necessary time to make arrangements to maintain uninterrupted telephone service.

If you experience trouble with this telephone equipment, contact your dealer for information

regarding service or repairs. The telephone company may ask that you disconnect this

equipment from the network until the problem has been resolved. I f your equipment continues

to disrupt the network, the telephone company may temporarily disconnect service. If this

happens, you will be informed of your right to file a complaint with the FCC.

The equipment may not be used on coin service provided by the telephone company.

Connection to party lines is subject to state tariffs.

WARNING!

This equipment generates and uses radio frequency energy. If not installed and used in

accordance with the manufacturer’s instructions, it could cause interference to radio and

television reception. It has been type tested and complies with the limits for a Class B

computing device in accordance with the specifications in Part 15 of the FCC Rules designed to

provide reasonable protection against interference in a residential installation. there is no

guarantee that interference will not occur. If this equipment causes interference to radio or

television, as determined by turning the equipment off and on, the user is encouraged to correct

the interference with the following measures:

• Reorient the receiving antenna.

• Relocate the computer with respect to the receiver.

• Plug the computer into a different outlet so the computer and receiver are on different

branch circuits.

Changes or modifications to this unit not expressly approved by the party responsible for

compliance could void the user’s authority to operate the equipment.

SHIELDED CABLES

This product has been tested and complies with FCC limits for a Class B computing device.

Using unshielded cables could cause your system to emit excess radio frequency increasing

the change of interference. To comply with FCC regulations, it is necessary to use shielded

DTE cables with your installation.

TOTE-A-FAX 542

TABLE OF CONTENTS

CHAPTER PAGE

1. Specifications ......................................................................... 3

2. Introduction ............................................................................. 4

2.1 Description ......................................................................... 4

2.2 Features/Benefits ............................................................... 4

2.3 System Requirements ....................................................... 6

3. Installation ............................................................................... 7

4. Operation ................................................................................. 8

4.1 The Basics of Modem Operation ....................................... 8

4.2 Giving Commands to the Modem ...................................... 8

4.3 The AT Command Set for the Tote-A-Fax 542 ................. 10

4.4 S-Registers for the Tote-A-Fax 542 .................................. 14

4.5 Fax Command Set for the Tote-A-Fax 542 ....................... 21

4.6 Result Codes Table for the Data Modem ......................... 25

4.7 Data Compression and Error Detection for the Modem .... 26

5. Troubleshooting ................................................................... 29

CHAPTER 1: Specifications

FACSIMILE MODEM

Standards — CCITT V.29/Group III, V.27 ter, V.21 sync

Speed — 9600-, 7200-, 4800-bps

Operation — Half-duplex

Interface — EIA RS-232/CCITT V.24

Certification — FCC Part 68

Transmit Level — 0 to –15 dBm

Receive Level — 0 to –43 dBm

Audio — Provided through built-in speaker

DATA MODEM

Standards — CCITT V.21, V.22, V.22 bis, Bell 103, Bell 211A

Data compression — CCITT V.42, V.42 bis, MNP Level 5

Speed — 2400-, 1200-, 300-bps

Operation — Full-duplex

Interface — EIA RS-232/CCITT V.24

Memory — Built-in non-volatile memory; EEPROM for configuration storage

GENERAL SPECIFICATIONS

System Requirements — DOS 2.1 or higher, 640K RAM

Ringer Equivalency — 0.4 B (Canadian Load Number: 41 B)

Connectors — (1) DB25 female; (2) RJ-11 telephone interface jacks

Power — 115 VAC± 10%; 60 Hz, or 9-volt battery, 200 mA

Size — 0.8"H x 2.2"W x 4"D (2 x 5.6 x 10.2 cm)

Weight — Shipping weight: 3.5 oz. (.001 kg) (not including optional Power

Supply PS 427)

1. SPECIFICATIONS

TOTE-A-FAX 542

2.1 DESCRIPTION

The Tote-A-Fax 542 (FX119A) is a

compact, battery-powered, portable

9600-bps Group III fax and 2400-bps

Hayes®compatible data modem. The

data modem supports today’s most

popular and powerful data

compression and error correction

protocols: CCITT V.42, V.42 bis,

and MNP®Level 5.

The Tote-A-Fax 542 is ideal for

portable, laptop, and notebook PC

users. It is perfect for travelers who

use portable PCs and need a way to

send files from remote locations to

the office mainframe, LAN server,

PC, and/or fax machine.

The Tote-A-Fax 542 is one of our

growing line of ultra-compact

products (modems, line drivers,

muxes) that provide you with full

datacomm support and the conven-

ience of a small enclosure. Like the

Tote-A-Fax (FX112A), it is one of the

smallest fax modems in the world. It

is compatible with all DOS-based

PCs, Windows 3.0, and the Apple

Macintosh®.

With the Tote-A-Fax 542 you can

gather data while “in the field”.

Then connect the Tote-A-Fax 542 to

a telephone (in a hotel room, at

your remote office, an airport, etc.)

and to your portable PC; now you’re

ready to send files anywhere.

2.2 FEATURES/BENEFITS

2.2.1 F

AX MODEM FEATURES

•Compatible with virtually all

portable PCs and with any Group

III fax.

The Tote-A-Fax 542 is compati-

ble with CCITT V.29 recom-

mendations for Group III fax

transmissions. Send and receive

faxes from your

portable/laptop/notebook PC

(DOS, Windows, or Macintosh

systems) to fax machines any-

where at speeds up to 9600 bps.

•Integrated fax and data

communications software.

The integrated fax/data

communications software loads

in just a few minutes to your

portable PC. The software is easy

to use and gives you all of the

functions and options to

compile files, merge many files

into one file, and send any fax or

data file. You can even customize

a cover sheet for transmissions.

2. INTRODUCTION

CHAPTER 2: Introduction

•Background Send and Receive

functions.

The Tote-A-Fax 542 sends and

receives fax files in background

mode. You continue to work

while your fax transmissions go

to their destination; you

continue to work while incoming

faxes arrive at your

laptop/portable PC. The Tote-A-

Fax 542 doesn’t tie you down or

hold you back from your other

tasks. The end result: you send

and receive your faxes without

wasting time or being distracted

from current work in other

applications.

•Print fax files directly to a

printer.

The Tote-A-Fax 542 will print

your received fax files to your

local Epson dot matrix printer

or Hewlett-Packard LaserJet

II/III laser printer (or

compatible printers). HGA,

CGA, EGA, and VGA mono- and

color-modes are supported, too.

You can make those incoming

faxes jump through a few other

hoops, too: they can be flipped,

compressed, or expanded for

better viewing, and they can be

displayed or printed either

automatically or on demand.

•Schedule fax transmission to

save money.

The Tote-A-Fax 542 lets you

schedule your fax transmissions.

This means you can send files at

some time in the future so that

you can take advantage of lower

telephone rates. You save money

in telephone line connect

charges. Plus the Tote-A-Fax 542

provides an activity log to

monitor and manage your

incoming and outgoing fax calls;

print the activity log to add to

your business account ledger.

•Transmit a fax to a single remote

fax or to any number of fax

machines.

The Tote-A-Fax lets you do a

traditional fax transmission

(point A to point B) and it gives

you the ability to broadcast a fax

file to a group of fax machines.

This would be very helpful to

travellers who need to get the

same information out to a

number of people in different

places.

TOTE-A-FAX 542

•Hayes AT Command Set

compatibility.

You can issue any of the Hayes

AT Commands to the Tote-A-Fax

542 for easy control of the

modem’s operations: you don’t

have to learn a new proprietary

communications “language” to

use this fax/data modem.

•Built-in non-volatile memory

supplied by EEPROM for

storing configuration.

•Automatic power down of the

unit for extended life of battery.

Don’t worry if you forget to turn

off the Tote-A-Fax 542—it knows

when to go to sleep to conserve

its battery power.

2.3 System Requirements

• IBM®PC/AT®or compatible

computer with at least 640K

RAM and a hard disk drive with

a minimum of 5MB of available

disk space; or

• Apple Macintosh®

• EGA/CGA/VGA/HGA adapter

and monitor.

• Direct outside telephone line.

• Printer (optional)

2.2.2 D

ATA

ODEM

EATURES

•V.42, V.42 bis, and MNP5 data

compression/error correction

protocol support.

Double or even quadruple your

effective data throughput rate

(from 2400 bps to 4800 bps,

7200 bps, or even 9600 bps). The

Tote-A-Fax 542 will

communicate with other V.42,

V.42bis, and MNP compatible

modems to get your data files to

their destination in less time—

with total accuracy. This saves

you costly telephone connect

time charges and valuable time

while you are on business.

•Compatible with five of the most

popular transmission standards:

CCITT V.21, V.22, V.22 bis,

V.23, Bell 103, and Bell 212A.

The Tote-A-Fax 542 modem can

communicate with most any

modem in the world. This wide

range of standards support is

invaluable to anyone who has to

send files to different modems

on a regular basis. You can send

your files at any of the following

three base speeds: 2400 bps,

1200 bps, 300 bps.

CHAPTER 3: Installation

Follow these steps to connect the

Tote-A-Fax 542 to your computer:

1. Attach the 110V Power Supply

unit (PS427) to the PWR

connector on the Tote-A-Fax

542. DO NOT PLUG THE POWER

ADAPTER INTO A POWER OUTLET AT

THIS TIME. Wait until step #4 to

apply power to the modem.*

2. Connect the RS-232 connector

on the Tote-A-Fax 542 to the RS-

232 port on your personal

computer.

3. Connect one end of the supplied

RJ-11 telephone cable to the

LINE jack on the Tote-A-Fax

542. Connect the other end of

this cable to the telephone line

jack.

4. Plug the Power Supply unit into

a power outlet.*

Here is a listing of the indicators

(LEDs) on the front panel of the on

the Tote-A-Fax 542:

PWR............Power

AA ...............Auto Answer

SD ...............Send Data

RD ...............Receive Data

*You can also operate the Tote-A-

Fax 542 with batteries rather than

using the Power Supply unit.

3. INSTALLATION

TOTE-A-FAX 542

4.1 The Basics of Modem Operation

After you’ve connected your Tote-A-

Fax 542 modem to your personal

computer, you need to establish a

procedure to communicate

(exchange data) with a data modem

in another location.

You now have the hardware

connected: on your end you have

the Tote-A-Fax 542 modem linked to

your PC; on the other (remote) end

there should be a modem attached

to another PC. Each modem is

attached to a telephone line.

A telephone call can be placed

between the two modems over the

telephone line. Once the modems

establish a connection, they need a

common set of parameters (rules

and limits) to exchange data bits.

This is the data communications

protocol.

4.2 Giving Commands to a Modem

Finally, you need a way to “talk” to

your modem through your

computer. You can use the:

• command code for the modem;

learning code is a difficult and

time consuming task.

• Standard AT Command Set to

issue commands to the modem.

The Standard AT Command Set is a

simplified “modem language”

supported by a majority of today’s

modems. It consists of short

groupings of keyboard characters,

followed by a carriage return or

enter key. Each character or

character group represents a

command or series of commands.

Pressing the return key initiates the

command you’ve stated to the

modem. This method of telling your

modem to do certain functions is

quick, simple, and easier to use than

command code.

The Tote-A-Fax 542’s built-in

command set is very compatible with

the Standard AT Command Set. It is

an asynchronous commu-nication

program that you can learn with

little effort. It will let you take

control of your modem through

your PC’s keyboard. The commands

are short, simple, and fast.

4.0 OPERATION

CHAPTER 4: Operation

4.2.1 T

AT C

OMMAND

Each command in the Standard AT

Command Set is preceded by the

two-character sequence AT. AT is

short for “Attention!”. You control

and command the modem by first

demanding its “attention” and then

dictating your command. When you

press the return or enter key you

officially initiate the command.

Each AT Command consists of the

following elements:

1. The two-character attention

sequence AT

2. A command

3. A command parameter

4. Press the return key

NOTE: There are two exceptions to this

convention: the A/ and the +++

commands. Both commands are

discussed later in this manual.

A command is not initiated until you

press the carriage return key <CR>.

The modm ignores entries

represented as spaces (that is, if you

press the space bar on your keyboard

the modem does not acknowledge

these characters as part of the

commad).

4.2.2 AT C

OMMAND

ARAMETERS

Not all commands have command

parameters associated with them. If

a parameter is missing from an AT

command statement, the value of

zero is assigned to it. Sometimes

zero is actually a valid command

parameter.

Summary: The sequence of

characters that follow the AT

sequence constitute the core of the

command. They cause the modem

to enter a command state.

Command parameters give the

modem further details about the

command. Pressing the carriage

return key initiates the command

(that is, the modem goes to work).

If you key in AT without a command,

you are simply sending a “wakeup

call” to the modem, telling it to get

ready to listen to a command.

The modem queues commands in a

40-character command line. The

command line beginning with AT

can have several commands.

NOTE: It is not necessary to have a

separator between the commands.

Here is the command line format:

AT command <parameter>command<parameter>

<CR>

The carriage return <CR> termin-

ates the command line. When the

modem receives the <CR> the

commands are performed in the

order in which they are sent to the

modem. If more than 40 characters

are sent to the modem an error

occurs; all commands must then be

retentered.

4.3 The AT Command Set for the

Data Modem

The following table gives the AT

commands supported by Tote-A-Fax

542 modem, including a description

of each command, its command

“range” and size. Pertinent notes

are included within the table.

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