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A Practical Guide to Advanced Networking, Third Edition by Jeffrey S. Beasley

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Chapter 11. Voice Over IP

Chapter Outline

Introduction

11-1 The Basics of Voice over IP

11-2 Voice over IP Networks

11-3 Quality of Service

11-4 Analyzing VoIP Data Packets

11-5 VoIP Security

Summary

Questions and Problems

Objectives

• Examine the technologies used in the generation, management, and transport of Voice over IP calls

• Investigate the ways Voice over IP telephony can be incorporated into a network

• Develop an understanding of the key quality of service issues associated with Voice over IP telephony

• Examine the data packets generated in a Voice over IP call

Key Terms

VoIP

PBX

PSTN

signaling

SS7

H.323

SIP

SSIP

CODEC

RTP

RTCP

packet sequence number

timestamp

tie line

TDM

VoIP gateway

VoIP relay

QoS

jitter

buffer

network latency ...

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