Book description
A systematic approach to understanding the basics of voice over IP
Understand the basics of enterprise and public telephony networking, IP networking, and how voice is transported over IP networks
Learn the various caveats of converging voice and data networks
Examine the basic VoIP signaling protocols (H.323, MGCP/H.248, SIP) and primary legacy voice signaling protocols (ISDN, C7/SS7)
Explore how VoIP can run the same applications as the existing telephony system but in a more cost-efficient and scalable manner
Delve into such VoIP topics as jitter, latency, packet loss, codecs, QoS tools, and security
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.
Table of contents
- Copyright
- About the Authors
- About the Technical Reviewers
- Acknowledgments
- Icons Used in This Book
- Introduction
-
I. PSTN
- 1. Overview of the PSTN and Comparisons to Voice over IP
- 2. Enterprise Telephony Today
- 3. Basic Telephony Signaling
- 4. Signaling System 7
- 5. PSTN Services
-
II. Voice over IP Technology
- 6. IP Tutorial
- 7. VoIP: An In-Depth Analysis
- 8. Quality of Service
- 9. Billing and Mediation Services
- 10. Voice Security
-
III. IP Signaling Protocols
- 11. H.323
-
12. SIP
- SIP Overview
- SIP Message Building Blocks
- Basic Operation of SIP
- SIP Procedures for Registration and Routing
-
SIP Extensions
- SIP Extension Negotiation Mechanism: Require, Supported, Allow Headers
- Caller and Callee Preferences
- SIP Event Notification Framework: Subscription and Notifications
- SUBSCRIBE and NOTIFY Methods
- Monitoring Registration State Using the Subscription-Notification Framework
- SIP REFER Request
- Presence and Instant Messaging Overview
- SIP Extensions for IM and Presence
- Summary
- 13. Gateway Control Protocols
-
IV. VoIP Applications and Services
- 14. PSTN and VoIP Interworking
-
15. Service Provider VoIP Applications and Services
- The Service Provider Dilemma
- Service Provider Applications and Benefits
- Service Provider VoIP Deployment: Vonage
- Service Provider Case Study: Prepaid Calling Card
- Session Border Control: Value Addition
- VoIP Peering: Top Priority for the Service Providers
- Service Provider VoIP and Consumer Fixed Mobile Convergence
- Summary
- 16. Enterprise Voice over IP Applications and Services
Product information
- Title: Voice over IP Fundamentals, Second Edition
- Author(s):
- Release date: July 2006
- Publisher(s): Cisco Press
- ISBN: 1587052571
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