VoIP and Unified Communications: Internet Telephony and the Future

August 22nd, 2012 | by kutenk |

by William A. Flanagan
2012
ISBN: 9781118019214
With clear, jargon-free explanations, this concise, direct book helps readers understand and assess the growing number of voice over Internet protocol (VoIP) and unified communications (UC) products and services that are available for businesses.

Understanding VoIP: Internet Telephony and the Future Voice Network

Product Description

Translates technical jargon into practical business communications solutions

This book takes readers from traditional voice, fax, video, and data services delivered via separate platforms to a single, unified platform delivering all of these services seamlessly via the Internet. With its clear, jargon-free explanations, the author enables all readers to better understand and assess the growing number of voice over Internet protocol (VoIP) and unified communications (UC) products and services that are available for businesses.

VoIP and Unified Communications is based on the author's careful review and synthesis of more than 7,000 pages of published standards as well as a broad range of datasheets, websites, white papers, and webinars. It begins with an introduction to IP technology and then covers such topics as:

• Packet transmission and switching

• VoIP signaling and call processing

• How VoIP and UC are defining the future

• Interconnections with global services

• Network management for VoIP and UC

This book features a complete chapter dedicated to cost analyses and payback calculations, enabling readers to accurately determine the short- and long-term financial impact of migrating to various VoIP and UC products and services. There's also a chapter detailing major IP systems hardware and software. Throughout the book, diagrams illustrate how various VoIP and UC components and systems work. In addition, the author highlights potential problems and threats to UC services, steering readers away from common pitfalls.

Concise and to the point, this text enables readers?from novices to experienced engineers and technical managers?to understand how VoIP and UC really work so that everyone can confidently deal with network engineers, data center gurus, and top management.

item_dimensions: 9.13 x 0.79 x 6.18 inches; 1.17 pounds
shipping_weight: 1.15 pounds
ASIN: 1118019210

$45.54

Table of Contents
VoIP and Unified Communications?Internet Telephony and the Future Voice Network
Preface
Chapter 1 ? IP Technology Disrupts Voice Telephony
1.1: Introduction to the Public Switched Telephone Network
1.2: The Digital PSTN
1.3: The Packet Revolution in Telephony

Chapter 2 ? Traditional Telephones Still Set Expectations
Overview
2.1: Availability: How the Bell System Ensured Service
2.2: Call Completion
2.3: Sound Quality: Encoding for Recognizable Voices
2.4: Low Latency
2.5: Call Setup Delays
2.6: Impairments Controlled: Echo, Singing, Distortion, Noise

Chapter 3 ? From Circuits to Packets
3.1: Data and Signaling Preceded Voice
3.2: Putting Voice into Packets

Chapter 4 ? Packet Transmission and Switching
Overview
4.1: The Physical Layer: Transmission
4.2: Data Link Protocols
4.3: IP, the Network Protocol
4.4: Layer 4 Transport Protocols
4.5: Higher Layer Processes
4.6: Saving Bandwidth
4.7: Differences: Circuit versus Packet Switched

Chapter 5 ? VoIP Signaling and Call Processing
Overview
5.1: What Packet Voice and UC Systems Share
5.2: Session Initiation Protocol (SIP)
5.3: Session Description Protocol
5.4: Media Gateway Control Protocol
5.5: H.323
5.6: Directory Services

Chapter 6 ? VoIP and Unified Communications Define the Future
6.1: Voice as Before, with Additions
6.2: Legacy Services to Keep and Improve with VoIP
6.3: Facsimile Transmission
6.4: Phone Features Added with VoIP/UC

Chapter 7 ? How VoIP and UC Impact the Network
Overview
7.1: Space, Power, and Cooling
7.2: Priority for Voice, Video, Fax Packets
7.3: Packets Per Second
7.4: Bandwidth
7.5: Security Issues
7.6: First Migration Steps while Keeping Legacy Equipment

Chapter 8 ? Interconnections to Global Services
Overview
8.1: Media Gateways
8.2: SIP Trunking
8.3: Operating VoIP across Network Address Translation
8.4: Session Border Controller
8.5: Supporting Multiple-Carrier Connections
8.6: Mobility and Wireless Access

Chapter 9 ? Network Management for VoIP and UC
Overview
9.1: Starting Right
9.2: Continuous Monitoring and Management
9.3: Troubleshooting and Repair

Chapter 10 ? Cost Analysis and Payback Calculation
Chapter 11 ? Examples of Hardware and Software
11.1: IP Phones
11.2: Gateways
11.3: Session Border Controllers
11.4: Call-switching Servers
11.5: Hosted VoIP/UC Service
11.6: Management Systems/Workstations

Chapter 12 ? Appendixes
12.1: Acronyms and Definitions
12.2: Reference Documents
12.3: Message and Error Codes

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