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SIP
Understanding the Session Initiation Protocol
Fourth Edition
For a complete listing of titles in the Artech House Telecommunications Library, turn to the back of this book.
SIP
Understanding the Session Initiation Protocol
Fourth Edition
Alan B. Johnston
Library of Congress Cataloging-in-Publication Data
A catalog record for this book is available from the U.S. Library of Congress.
British Library Cataloguing in Publication Data
A catalogue record for this book is available from the British Library.
Cover design by John Gomes
ISBN 13: 978-1-60807-863-9
© 2016 ARTECH HOUSE
685 Canton Street
Norwood, MA 02062
All rights reserved. Printed and bound in the United States of America. No part of this book may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without permission in writing from the publisher.
All terms mentioned in this book that are known to be trademarks or service marks have been appropriately capitalized. Artech House cannot attest to the accuracy of this information. Use of a term in this book should not be regarded as affecting the validity of any trademark or service mark.
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Contents
Preface to the Fourth Edition
Acknowledgment
1
SIP and the Internet
1.1
Signaling Protocols
1.2
Internet Multimedia Protocol Stack
1.2.1
Physical Layer
1.2.2
Data/Link Layer
1.2.3
Network Layer
1.2.4
Transport Layer
1.2.5
Application Layer
1.2.6
Utility Applications
1.2.7
Multicast
1.3
Internet Names
1.4
URLs, URIs, and URNs
1.5
Domain Name Service
1.5.1
DNS Resource Records
1.5.2
Address Resource Records (A or AAAA)
1.5.3
Service Resource Records (SRV)
1.5.4
Naming Authority Pointer Resource Records (NAPTR)
1.5.5
DNS Resolvers
1.6
Global Open Standards
1.7
Internet Standards Process
1.8
A Brief History of SIP
1.9
Conclusion
References
2
Introduction to SIP
2.1
A Simple Session Establishment Example
2.2
SIP Call with a Proxy Server
2.3
SIP Registration Example
2.4
SIP Presence and Instant Message Example
2.5
Message Transport
2.5.1
UDP Transport
2.5.2
TCP Transport
2.5.3
TLS Transport
2.5.4
SCTP Transport
2.6
Transport Protocol Selection
2.7
Conclusion
2.8
Questions
References
3
SIP Clients and Servers
3.1
SIP User Agents
3.2
Presence Agents
3.3
Back-to-Back User Agents
3.4
SIP Gateways
3.5
SIP Servers
3.5.1
Proxy Servers
3.5.2
Redirect Servers
3.5.3
Registrar Servers
3.6
Uniform Resource Indicators
3.7
Acknowledgment of Me ............

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