Voice over IP Fundamentals

Voice over IP Fundamentals

by Jonathan Davidson, James Peters, Brian Gracely
     
 

ISBN-10: 1578701686

ISBN-13: 9781578701681

Pub. Date: 03/27/2000

Publisher: Pearson Education

Voice over IP (VoIP) has become an important factor in network communications, promising lower operational costs, greater flexibility, and a variety of enhanced applications. To help you understand VoIP networks, Voice over IP Fundamentals provides a thorough introduction to the basics of VoIP.

Voice over IP Fundamentals explains how a basic IP telephony

Overview

Voice over IP (VoIP) has become an important factor in network communications, promising lower operational costs, greater flexibility, and a variety of enhanced applications. To help you understand VoIP networks, Voice over IP Fundamentals provides a thorough introduction to the basics of VoIP.

Voice over IP Fundamentals explains how a basic IP telephony infrastructure is built and works today, major concepts concerning voice and data networking, and transmission of voice over data networks. You'll learn how voice is signaled through legacy telephone networks, how IP signaling protocols are used to interoperate with current telephony systems, and how to ensure good voice quality using quality of service (QoS).

Even though Voice over IP Fundamentals is written for anyone seeking to understand how to use IP to transport voice, its target audience comprises both voice and data networking professionals. In the past, professionals working in voice and data networking did not have to understand each other's roles. However, in this world of time-division multiplexing (TDM) and IP convergence, it is important to understand how these technologies work together. Voice over IP Fundamentals explains all the details so that voice experts can understand data networking and data experts can understand voice networking.

The second edition of this best-selling book includes new chapters on the importance of billing and mediation in a VoIP network, security, and the common types of threats inherent when packet voice environments, public switched telephone networks (PSTN), and VoIP interoperate. It also explains enterprise and service-provider applications and services.

Product Details

ISBN-13:
9781578701681
Publisher:
Pearson Education
Publication date:
03/27/2000
Series:
Networking Technology Series
Edition description:
Older Edition
Pages:
373
Product dimensions:
7.52(w) x 9.36(h) x 1.09(d)

Related Subjects

Table of Contents

Introductionxx
Part IPSTN3
Chapter 1Overview of the PSTN and Comparisons to Voice over IP5
The Beginning of the PSTN5
Understanding PSTN Basics7
PSTN Services and Applications16
Drivers Behind the Convergence Between Voice and Data Networking20
Packet Telephony Network Drivers21
New PSTN Network Infrastructure Model30
Summary32
Chapter 2Enterprise Telephony Today35
Similarities Between PSTN and ET35
Differences Between PSTN and ET36
Common ET and PSTN Interworking37
Summary45
Chapter 3Basic Telephony Signaling47
Signaling Overview47
E&M Signaling50
CAS54
ISDN64
QSIG73
DPNSS77
Summary77
Chapter 4Signaling System 779
SS7 Network Architecture80
SS7 Protocol Overview89
SS7 Examples112
List of SS7 Specifications115
Summary115
Chapter 5PSTN Services117
Plain Old Telephone Service117
Business Services119
Service Provider Services122
Summary124
Part IIVoice over IP Technology127
Chapter 6IP Tutorial129
OSI Reference Model129
Internet Protocol133
Data Link Layer Addresses134
IP Addressing135
Routing Protocols137
EIGRP139
IP Transport Mechanisms140
Summary143
References143
Chapter 7VoIP: An In-Depth Analysis145
Delay/Latency146
Jitter148
Pulse Code Modulation149
Voice Compression151
Echo154
Packet Loss155
Voice Activity Detection157
Digital-to-Analog Conversion158
Tandem Encoding158
Transport Protocols160
Dial-Plan Design162
End Office Switch Call-Flow Versus IP Phone Call164
Summary167
References167
Chapter 8Quality of Service169
QoS Network Toolkit170
Edge Functions172
Traffic Policing187
Backbone Networks197
Rules of Thumb for QoS200
Cisco Labs' QoS Testing201
Summary203
Chapter 9Billing and Mediation Services207
Billing Basics207
Case Study: Cisco SIP Proxy Server and Billing213
Challenges for VoIP Networks218
Mediation Services218
Summary219
Chapter 10Voice Security221
Security Requirements221
Security Technologies221
Protecting Voice Devices227
Protecting IP Network Infrastructure228
Security Planning and Policies235
Summary236
Part IIIIP Signaling Protocols239
Chapter 11H.323241
H.323 Elements245
H.323 Protocol Suite249
H.323 Call-Flows260
Summary264
Chapter 12SIP267
SIP Overview268
SIP Message Building Blocks271
Basic Operation of SIP280
SIP Procedures for Registration and Routing284
SIP Extensions291
Summary299
Chapter 13Gateway Control Protocols301
MGCP Overview301
MGCP Model302
MGCP Commands and Messages303
MGCP Call Flows311
Advanced MGCP Features315
H.248/MEGACO317
Summary318
Part IVVoIP Applications and Services321
Chapter 14PSTN and VoIP Interworking323
Cisco Packet Telephony323
Packet Voice Network Overview325
PGW2200 Architecture and Operations332
PGW2200 Implementation337
PSTN Signaling Over IP342
Changing Landscape of PSTN-IP Interworking344
Session Border Controller (SBC)346
Summary348
Chapter 15Service Provider VoIP Applications and Services351
The Service Provider Dilemma351
Service Provider Applications and Benefits353
Service Provider VoIP Deployment: Vonage354
Service Provider Case Study: Prepaid Calling Card356
Session Border Control: Value Addition358
VoIP Peering: Top Priority for the Service Providers359
Service Provider VoIP and Consumer Fixed Mobile Convergence359
Summary361
Chapter 16Enterprise Voice over IP Applications and Services363
Migrating to VoIP Architecture363
Enterprise Voice Applications and Benefits364
Advanced Enterprise Applications365
Wi-Fi-Enabled Phones369
Better Voice Quality Using Wideband Codecs370
Summary370
Index372

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