Converged Networks and Services:... | Buy

A much-needed guide through the thicket of conflicting IP telephony technologies.-Scott Bradner Convergence of the Internet and the Public Switched Telephone Network (PSTN) makes possible a wide range of new telecommunications services. Written by the industry leaders at Bell Laboratories, this book puts the future of convergence in perspective and helps you make decisions that leverage its power. The authors describe the network infrastructure, then explain how the PSTN and Internet are being modified to work with each other. They also define and explore three aspects of the convergence: 1) interworking with VoIP, 2) IP-based service control, and 3) remote access to IP networks. With this book, you'll get an insider's perspective of key technologies, an in-depth review of the relevant standards, and a detailed survey of emerging applications and products.You'll also learn how to determine which products and services are right for your organization. Wiley Networking Council Books put technology into perspective for decision-makers who need an implementation strategy, a vendor and outsourcing strategy, and a product and design strategy. The Council of series advisors is composed of three of the the most influential leaders of the networking community:Visit our Web site at www.wiley.com/compbooks/ Visit the Networking Council Web site at www.wiley.com/networking council

Networking Council Foreword

xiii

Acknowledgments

xv

Introduction

xvii

Part One Background and Emerging Technologies

1

(86)

A Context for Convergence

3

(16)

Innovations and Infrastructures

4

(4)

Living in Interesting Times

8

(6)

Precedents for Network Infrastructure Transition

9

(3)

The Infrastructure Bazaar

12

(1)

Applications: The Driving Factor

13

(1)

Convergence, Integration, and Interworking

14

(5)

Adjusting the PSTN to the Internet

19

(38)

The Public Switched Telephone Network (PSTN)

21

(36)

The PSTN: Switching, Signaling, Services, and Operations

22

(19)

The PSTN Access to IP Networks

41

(12)

Internet-Supported PSTN Services

53

(4)

Adjusting the Internet to the PSTN

57

(30)

Quality of Service (QoS)

59

(8)

Fair Queuing and Weighted Fair Queuing

61

(2)

Label or Tag Switching

63

(2)

Active Networks

65

(2)

IP Telephony Gateway

67

(8)

Gateway Decomposition

69

(1)

Distributed Gateways

70

(2)

Media Gateway Control

72

(3)

Gateway Location

75

(3)

Address Translation

78

(1)

Codecs

79

(8)

Motivations for Speech Coding in Internet-Telephony Integration

79

(2)

Voice Coding Basics

81

(3)

Trade-Offs

84

(3)

Part Two Standards

87

(90)

The Relevant Standards Bodies

88

(5)

ISDN, SS No. 7, IN, and CTI

93

(22)

Integrated Services Digital Network (ISDN)

94

(3)

Signalling System No. 7 (SS No. 7)

97

(7)

Message Transfer Part (MTP)

99

(1)

Signalling Connection Control Part (SCCP)

99

(1)

Transaction Capabilities (TC) Application Part

100

(2)

ISDN User Part (ISUP)

102

(2)

Intelligent Network

104

(7)

Computer-Supported Telephony Applications (CSTA)

111

(4)

IP Telephony-Related Standards

115

(30)

Real-Time Transport

115

(2)

H.323

117

(7)

Call and Channel

118

(1)

System Components

119

(4)

Signaling Procedures

123

(1)

T.120 and Related Standards

124

(4)

Session Initiation Protocol and Session Description Protocol

128

(3)

Quality of Service (QoS)

131

(14)

Integrated Services (intserv)

132

(3)

Differentiated Services (diffserv)

135

(6)

Multiprotocol Label Switching (MPLS)

141

(4)

Messaging, Directory, and Network Management Standards

145

(14)

Simple Mail Transfer Protocol (SMTP) and Its Extensions

145

(3)

Multipurpose Internet Mail Extensions (MIME)

148

(3)

Voice Profile for Internet Mail (VPIM)

151

(1)

Lightweight Directory Access Protocol (LDAP)

152

(2)

Network Management

154

(5)

Remote-Access-Related Standards

159

(18)

Point-to-Point Interactions over the PSTN

159

(5)

Authentication, Authorization, and Accounting (AAA)

164

(3)

Internet Protocol Security (IPsec)

167

(4)

Multihoming

171

(6)

Part Three Choosing Products and Services

177

(106)

Identifying Your Environments

179

(12)

Enterprise Networks

180

(4)

Small Office/Home Office (SOHO)

181

(1)

Medium to Large Business---Single Building or Campus

182

(1)

Medium to Large Business---Multiple Campuses

182

(1)

Medium to Large Business---Single or Multiple Campuses with Small Remote Locations

183

(1)

Interenterprise Networks and Extranets

183

(1)

Providers of Public Networks

184

(7)

Internet Service Provider (ISP)

185

(1)

Long Distance and International Carrier

186

(1)

New Carrier

186

(1)

Incumbent National Carrier

187

(1)

Incumbent Local Exchange Carrier (United States)

187

(1)

Competitive LEC

188

(1)

Cellular/Wireless

188

(1)

Cable Network

189

(2)

Identifying Your Applications

191

(32)

Unified Messaging

192

(4)

IP Telephony Calls

196

(9)

Phone-to-Phone

198

(3)

PC-to-Phone

201

(1)

Phone-to-PC

202

(1)

PC-to-PC

203

(2)

IP Fax

205

(1)

Multimedia Conferencing and Data Collaboration

206

(4)

Web-Based Conference Control

210

(1)

Internet Call Center

210

(1)

Internet Call-Waiting

211

(1)

PINT Services

212

(1)

Click-to-Dial-Back

212

(1)

Click-to-Fax

213

(1)

Click-to-Fax-Back

213

(1)

Voice-Access-to-Content

213

(1)

Web-Based Service Customization

213

(1)

Remote Dial-in Access Applications and Virtual Private Networks

214

(9)

Security

217

(1)

Telecommuting

218

(1)

VPNs

219

(4)

PSTN-Internet Interworking Products

223

(46)

PSTN-Internet Interworking Product Types

223

(46)

VoIP Gateways

224

(5)

Multipoint Conferencing Units (MCUs)

229

(4)

H.323 Gatekeepers

233

(4)

Private Branch Exchange Systems (PBXs)

237

(13)

Service Nodes and Intelligent Peripherals

250

(8)

Messaging Platforms

258

(3)

Remote Access Servers

261

(3)

SS7 Gateways

264

(2)

Class 5 Switches with IP Trunks

266

(3)

Choosing the Right Products for Your Applications

269

(14)

Features

269

(1)

Ease of Use

270

(1)

Billing/Accounting

271

(1)

Legacy Support

271

(1)

Standards Compliance

272

(2)

Regulatory/Mandatory Standards

274

(1)

Capacity

275

(1)

Scalability

276

(1)

Extensibility

276

(1)

Quality of Service (QoS)

276

(2)

Reliability

278

(1)

Maintainability

278

(1)

Security

279

(1)

Disaster Recovery

280

(1)

Vendor Services

280

(1)

Life Cycle Cost

281

(1)

Price/Performance

281

(1)

Future Proofing

282

(1)

Summary

282

(1)

Part Four Conclusion and Reference Material

283

(26)

The Technology is Relevant

285

(24)

Economics of the Integration of the Internet and Telecommunications

286

(14)

Carrier Viewpoint

287

(11)

Enterprise Viewpoint

298

(1)

Private Networks and Carrier Services

299

(1)

Regulation and Its Impact

300

(3)

Multimedia: Voice as One Application among Many

303

(2)

Specialized Applications and Their Requirements

305

(1)

Summary and Conclusions

306

(3)

Bibliography

309

(18)

Acronym List

327

(8)

Index

335

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