HB 75-1996 Teleconferencing Handbook

7/31/2019 HB 75-1996 Teleconferencing Handbook

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SAA/SNZ HB75:1996

Handbook

TELECONFERENCING

HANDBOOK


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SAA/SNZ HB75:1996

Handbook

TELECONFERENCING

HANDBOOK

PUBLISHED JOINTLY BY:

STANDARDS AUSTRALIA1 The Crescent,Homebush NSW 2140 Australia

STANDARDS NEW ZEALAND

Level 1 0, Standards House,155 The Terrace,Wellington 6001 New Zealand

ISBN 0 7337 0202 3


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SAA/SNZ HB75:1996 2

PREFACE

This Handbook was prepared by Standards Australia and the Australasian TeleconferencingAssociation to describe the concepts and principles of teleconferencing. It also provides anintroduction to the technology involved in teleconferencing, the equipment used and the

procedures for setting up a teleconference.The objective of this Handbook is to provide users and potential users of teleconferencingwith an understanding of teleconferencing in order to encourage and facilitate its furtheradoption in Australia and New Zealand.

ACKNOWLEDGMENTS

This Handbook is the result of the joint efforts of Standards Australia and the AustralasianTeleconferencing Association (ATA). The ATA provided the draft text and has the

responsibility for the technical content of the Handbook.Standards Australia particularly wishes to acknowledge the work of the members of theATAs Standards and Technical Committee who contributed to the Handbook.

The ATA is the independent, non-partisan industry body for teleconferencing in Australasia.It was incorporated in 1992. The ATA aims to promote the development and application ofall types of teleconferencing in both the Australasian region and around the globe.Membership of the Association encompasses companies and individuals spanning variousindustry sectors including telecommunications, computing, education, mining, f inancial, legaland m anufacturing. The AT As mission is to represent the Australasian teleconferencingindustry and to promote the development and application of all types of teleconferencing inthe interest of its members.

If you would like m ore information on the ATA or are interested in becoming a member,

please contact the Secretary at PO Box 3151, South Brisbane, Queensland 4101.

Copyright STANDARDS AUSTRALIA/ STANDARDS NEW ZEALAND

Users of Standards are reminded that copyright subsists in all Standards Australia and Standards New Zealand publications and software.Except where the Copyright Act allows and except where provided for below no publications or software produced by Standards Australiaor Standards New Zealand may be reproduced, stored in a retrieval system in any form or transmitted by any means without prior permissionin writing from Standards Australia or Standards New Zealand. Permission may be conditional on an appropriate royalty payment. Australianrequests for permission and information on commercial software royalties should be directed to the head office of Standards Australia.New Zealand requests should be directed to Standards New Zealand.

Up to 10 percent of the technical content pages of a Standard may be copied for use exclusively in-house by purchasers of theStandard without payment of a royalty or advice to Standards Australia or Standards New Zealand.

Inclusion of copyright material in computer software programs is also permitted without royalty payment provided such programs areused exclusively in-house by the creators of the programs.

Care should be taken to ensure that material used is from the current edition of the Standard and that it is updated whenever the Standard

is amended or revised. The number and date of the Standard should therefore be clearly identified.The use of material in print form or in computer software programs to be used commercially, with or without payment, or in commercialcontracts is subject to the payment of a royalty. This policy may be varied by Standards Australia or Standards New Zealand at any time.


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3 SAA/SNZ HB75:1996

CONTENTS

Page

CHAPTER 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.1 What is Teleconferencing? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.2 Video Conferencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.3 Audio Conferencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.4 Audiographic Conferencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.5 Multimedia Conferencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

CHAPTER 2 VIDEO CONFERENCING EQUIPMENT . . . . . . . . . . . . . . . . . . . . 7

2.1 Desktop Control Unit and Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.2 Video Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.3 Audio Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.4 Codec . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102.5 Multipoint Control Unit (MCU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.6 Autodialler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.7 Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.8 Multimedia and Desktop Video Conferencing . . . . . . . . . . . . . . . . . . . . . . 11

CHAPTER 3 CONNECTIVITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

CHAPTER 4 NETWORKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.1 Video Conferencing Using Digital Services . . . . . . . . . . . . . . . . . . . . . . . . 14

4.2 Picture Quality Versus Bandwidth Required . . . . . . . . . . . . . . . . . . . . . . . 14

4.3 ISDN Access Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.4 Teleconferencing using LANs/WANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

CHAPTER 5 STANDARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.2 ITU-T Rec.H.320 Family of Standards for Video Conferencing . . . . . . . . . . 16

5.3 ITU-T Rec.T.120 Family of Standards for Data Conferencing . . . . . . . . . . . 16

5.4 The Future . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

CHAPTER 6 ORGANIZING A TELECONFERENCE . . . . . . . . . . . . . . . . . . . . . 18

6.1 The Conference Room . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186.2 Preparing for a Teleconference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.3 During the Teleconference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

CHAPTER 7 INFORMATION AND ASSISTANCE . . . . . . . . . . . . . . . . . . . . . . 21

7.1 Help Desks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

7.2 Interpreters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

First published as SAA/SNZ HB75:1996.


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