SIP (Session Initiation Protocol) is the open standard that will make IP telephony an irresistible force in communications, doing for converged services what http does for the Web. "SIP Demystified" - authored by Gonzalo Camarillo, one of the contributors to SIP development in the IETF--gives you the tools to keep your company and career competitive. This guide tells you why the standard is needed, what architectures it supports, and how it interacts with other protocols. As a bonus, you even get a context-setting background in data networking. Perfect if you're moving from switched voice into a data networking environment, here's everything you need to understand:

* Where, why, and how SIP is used
* What SIP can do and deliver
* SIP's fit with other standards and systems
* How to plan implementations of SIP-enabled services
* How to size up and choose from available SIP products

Preface	p. xiii
Foreword	p. xvii
Signalling in the Circuit-Switched Network	p. 1
The Origins of Circuit-Switching	p. 3
Characteristics of Circuit-Switching	p. 6
Strengths of Circuit-Switching	p. 6
Weaknesses of Circuit-Switching	p. 7
Introduction to Signalling	p. 8
FDM and In-band Signalling	p. 11
Analog Transmission	p. 12
Digital Transmission	p. 13
Time Division Multiplexing	p. 15
Digital Signalling Systems	p. 16
Access Signalling	p. 18
Trunk Signalling	p. 19
SS7	p. 23
The Paradigm Behind SS7	p. 25
Conclusions	p. 28
Packet Switching, IP, and the IETF	p. 29
Packet Switching	p. 30
Strengths of Packet Switching	p. 35
Weaknesses of Packet Switching	p. 36
X.25	p. 36
IP and the Internet Paradigm	p. 37
IP Connectivity	p. 37
Intelligence Pushed to the End Systems	p. 38
End-to-End Protocols	p. 41
General Design Issues	p. 42
History of the Internet Protocol Development Process	p. 45
Origins of the Request For Comments (RFCs)	p. 45
Coordination Bodies	p. 46
The IETF	p. 48
The IESG	p. 49
The Technical Work	p. 49
IETF Specifications: RFCs and I-Ds	p. 50
The Internet Multimedia Conferencing Architecture	p. 55
The Internet Layered Architecture	p. 56
Transport Layer Protocols	p. 57
Real-Time Services in the Internet	p. 59
Multicast	p. 62
Routing Towards Many Receivers	p. 62
Advantages of Multicast	p. 64
Multicast Routing Protocols	p. 65
IGMP	p. 68
The Mbone	p. 70
Transport of Real-Time Data: RTP	p. 70
Jitter and Sequencing of Datagrams	p. 71
Real-Time Transport Control Protocol	p. 73
QoS Provisioning: Integrated Services and Differentiated Services	p. 74
Integrated Services	p. 74
Differentiated Services (DiffServ)	p. 79
Session Announcement Protocol (SAP)	p. 81
Session Descriptions	p. 82
Session Description Protocol (SDP)	p. 82
SDP Syntax	p. 83
SDP Next Generation (SDPng)	p. 86
Real-Time Streaming Protocol (RTSP)	p. 87
Usage Example of the Internet Multimedia Conferencing Toolkit	p. 87
The Session Initiation Protocol: SIP	p. 89
SIP History	p. 90
Session Invitation Protocol: SIPv1	p. 91
Simple Conference Invitation Protocol: SCIP	p. 92
Session Initiation Protocol: SIPv2	p. 92
Functionality Provided by SIP	p. 94
Session Establishment, Modification, and Termination	p. 94
User Mobility	p. 96
SIP Entities	p. 98
User Agents	p. 98
Redirect Servers	p. 102
Proxy Servers	p. 103
Registrars	p. 105
Location Servers	p. 105
Good Features of SIP	p. 106
SIP Is Part of the IETF Toolkit	p. 106
Separation Between Establishing and Describing a Session	p. 108
Intelligence in the End System: End-to-End Protocol	p. 109
Interoperability	p. 109
Scalability	p. 110
SIP as a Platform for Service Creation	p. 110
SIP: Protocol Operation	p. 115
Client/Server Transactions	p. 116
SIP Responses	p. 116
SIP Requests	p. 117
Types of Proxy Servers	p. 126
Call Stateful Proxy	p. 127
Stateful Proxy	p. 127
Stateless Proxy	p. 129
Distribution of Proxies	p. 129
Format of SIP Messages	p. 130
SIP Request Format	p. 132
SIP Response Format	p. 132
SIP Headers	p. 134
SIP Bodies	p. 142
Transport Layer	p. 144
INVITE Transactions	p. 144
CANCEL Transactions	p. 148
Other Transactions	p. 150
Detailed Example	p. 151
SIP Call Through a Proxy	p. 151
Extending SIP: The SIP Toolkit	p. 159
Extension Negotiation	p. 160
How It's Done	p. 161
Design Principles for SIP Extensions	p. 162
Do Not Break the Toolkit Approach	p. 163
Peer-to-Peer Relationship	p. 163
Independence from Session Type	p. 164
Do Not Change Method Semantics	p. 164
Extensions to SIP	p. 165
The SIP Toolkit	p. 165
Reliable Delivery of Provisional Responses	p. 165
Mid-session Transactions That Do Not Change the State of the Session	p. 169
Multiple Message Bodies	p. 170
Instant Messages	p. 171
Automatic Configuration of UAs	p. 172
Preconditions to Be Fulfilled Before Alerting	p. 174
Caller Preferences	p. 176
Asynchronous Notification of Events	p. 179
Third-party Call Control	p. 181
Session Transfer	p. 184
Sending Commands	p. 186
SIP Security	p. 187
Building Applications with the SIP Toolkit	p. 191
Third-generation Mobile Systems	p. 192
Network Domains	p. 193
Call Flow Examples	p. 195
Instant Messages and Presence	p. 199
SIMPLE Working Group	p. 199
Presence Architecture	p. 200
Instant Messaging	p. 201
PacketCable	p. 202
Architecture	p. 203
Call Flow Example	p. 203
PSTN to SIP Interworking	p. 204
Low-Capacity Gateways	p. 207
High-Capacity Gateways	p. 209
SIP Extensions for PSTN Interworking	p. 210
The PINT Service Protocol	p. 213
SIP for Conferencing	p. 214
Multicast Conferences	p. 215
End User Mixing Model	p. 215
Multipoint Control Unit (MCU)	p. 216
Decentralized Multipoint Conference	p. 217
Control of Networked Appliances	p. 219
Finding Futher Information on SIP	p. 221
IETF Web site	p. 221
Henning Schulzrinne's SIP Web page	p. 223
Dean Willis' Web Pages	p. 225
The SIP forum	p. 226
RFC example	p. 227
RFC	p. 229
Acronyms	p. 239
References	p. 245
Index	p. 251
Table of Contents provided by Syndetics. All Rights Reserved.

ISBN: 9780071373401
ISBN-10: 0071373403
Series: Demystified
Audience: Professional
Format: Paperback
Language: English
Number Of Pages: 320
Published: 18th September 2001
Country of Publication: US
Dimensions (cm): 22.91 x 18.75 x 1.83
Weight (kg): 0.59
Edition Number: 1