Packet Guide to Voice over IP
A System Administrator's Guide to VoIP Technologies
Samenvatting
Go under the hood of an operating Voice over IP network, and build your knowledge of the protocols and architectures used by this Internet telephony technology. With this concise guide, you'll learn about services involved in VoIP and get a first-hand view of network data packets from the time the phones boot through calls and subsequent connection teardown.
With packet captures available on the companion website, this book is ideal whether you're an instructor, student, or professional looking to boost your skill set. Each chapter includes a set of review questions, as well as practical, hands-on lab exercises.
- Learn the requirements for deploying packetized voice and video
- Understand traditional telephony concepts, including local loop, tip and ring, and T carriers
- Explore the Session Initiation Protocol (SIP), VoIP's primary signaling protocol
- Learn the operations and fields for VoIP's standardized RTP and RTCP transport protocols
- Delve into voice and video codecs for converting analog data to digital format for transmission
- Get familiar with Communications Systems H.323, SIP's widely used predecessor
- Examine the Skinny Client Control Protocol used in Cisco VoIP phones in networks around the world
Specificaties
Inhoudsopgave
1. Introduction to Voice over the Internet Protocol
-What Is VoIP?
-Real-time Versus Nonreal-time Data
-Why Change to VoIP?
-VoIP and FCC Regulation
-General VoIP Topologies
-Power over Ethernet
-VoIP Protocols
-VoIP Basic Operation
-Unified Communications
-Summary
-Standards and Reading
-Review Questions
-Review Question Answers
-Lab Activities
2. Traditional Telephony
-Introduction
-Overview
-Organizations
-Connecting to the Traditional World
-Telecommunication Companies
-Telephone Wiring
-Integrated Services Digital Network
-Basic Telephone-Call Operation
-Summary
-Standards and Reading
-Review Questions
-Review Question Answers
-Lab Activities
3. Session Initiation Protocol
-Introduction
-Protocol Description
-Basic Operation
-SIP Messages and Message Structure
-Basic Operation Continued
-Trunks
-Security
-Summary
-Standards and Reading
-Review Questions
-Review Question Answers
-Lab Activities
4. The Real-Time Transport Protocol and the Real-Time Control Protocol
-Protocol Description
-Profiles
-Basic Operation
-RTP Control Protocol
-Security
-Summary
-Standards and Reading
-Review Questions
-Review Answers
-Lab Activities
5. Codecs
-Audio Frequencies
-Voice Signals
-Audio Coders and Decoders
-Transcoding
-Packet Loss and Packet Loss Concealment (PLC)
-What Codec Are You Using?
-Video Signals
-Standards Groups for Video
-Summary
-Standards and Reading
-Review Questions
-Review Question Answers
-Lab Activities
6. H.323 ITU-T Recommendation for Packet-Based Multimedia Communications Systems
-Recommendation Description
-Subprotocols
-Basic Operation and Message Structure
-H.225 Messaging
-H.245
-Voice Data
-Termination
-Summary
-Standards and Reading
-Review Questions
-Review Question Answers
-Lab Activities
7. Skinny Client Control Protocol
-Protocol Description
-Topology Construction
-Operational Stages
-Performance Measuring
-Off-Site Calling
-Summary
-Reading
-Review Questions
-Review Answers
-Lab Activities
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Job van den Berg€ 34,95
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