Newnes_Data_Communications_Pocket_Book_4E.pdf

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Newnes Data Communications Pocket Book
Newnes
Data Communications
Pocket Book
Fourth edition
Michael Tooley
Steve Winder
OXFORD AMSTERDAM BOSTON LONDON NEW YORK PARIS
SAN DIEGO SAN FRANCISCO SINGAPORE SYDNEY TOKYO
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Newnes
An imprint of Elsevier Science
Linacre House, Jordan Hill, Oxford OX2 8DP
225 Wildwood Avenue, Woburn, MA 01801-2041
First published 1989
Reprinted 1990
Second edition 1992
Reprinted 1993, 1994, 1995
Third edition 1997
Reprinted 1998 (twice), 1999
Fourth edition 2002
Copyright Steve Winder and Mike Tooley, 1989, 1992, 1997, 2002.
All rights reserved
No part of this publication
may be reproduced in any material form (including
photocopying or storing in any medium by electronic
means and whether or not transiently or incidentally
to some other use of this publication) without the
written permission of the copyright holder except
in accordance with the provisions of the Copyright,
Designs and Patents Act 1988 or under the terms of a
licence issued by the Copyright Licensing Agency Ltd,
90 Tottenham Court Road, London, England W1P 4LP.
Applications for the copyright holder’s written permission
to reproduce any part of this publication should be addressed
to the publishers
British Library Cataloguing in Publication Data
A catalogue record for this book is available from the British Library
ISBN 0 7506 52977
For information on all Newnes publications visit our website at
www.newnespress.com
Typeset by Laserwords Private Limited, Chennai, India
Printed and bound in Great Britain
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Contents
Preface
vii
1 Glossary
1
2 Terminals
37
48
4 Serial interfaces
68
5 Data communication equipment
103
6 Parallel interfaces
130
146
8 Local area networks
149
9 Wide area networks
175
10 Transmission protocols
182
11 Reference information
212
Index
241
 
Preface
Data communications continues to expand due to the increased use
of multi-media computers and through the use of the Internet and
company-wide Intranets. The amount of data traffic carried over pub-
lic telecommunication networks now exceeds that of voice traffic.
Data communications links range from a simple low-speed modem
operating over a pair of copper wires, through to complex packet
switched networks operating over an optical fibre.
‘Data’ could be defined as non-real-time digital information such
as data, photographic and video files. However, it could now also
include real-time video streams and voice traffic since these are digi-
tised and can have similar characteristics to data traffic. The conver-
gence of all telecommunications traffic into packet based transmission
such as Internet Protocol (IP) blurs the distinction between real-time
and data traffic even more. The main distinction between them is
the time delay in transporting the information from the source to the
recipient; voice and real-time video must not be unduly delayed.
This fourth edition of the Data Communications Pocket Book
attempts to briefly describe all current forms of data communications,
from computer interfaces and cables through to the protocols used in
packet based networks. New material includes Universal Serial Bus
(USB) and Firewire interfaces, as well as CAT-5 cables and Inter-
net Protocol version 6 (IPv6). Some material from the third edition
has been removed and the remaining topics have been updated. As
with any small book, there is never enough space to publish all the
information that may be needed. However, this book will hopefully
contain enough information to help engineers and technicians whilst
working away from their bulky reference books.
Steve Winder
 

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