VoIP Performance Management and Optimization, Rough Cuts

• Copyright 2010
• Dimensions: 7-3/8" x 9-1/8"
• Pages: 448
• Edition: 1st

• Rough Cuts
• ISBN-10: 1-58705-919-3
• ISBN-13: 978-1-58705-919-3

This is the Rough Cut version of the printed book.

VoIP Performance Management and Optimization

A KPI-based approach to managing and optimizing VoIP networks

IP Communications

Adeel Ahmed, CCIE® No. 4574

Habib Madani

Talal Siddiqui, CCIE No. 4280

VoIP Performance Management and Optimization is the first comprehensive, expert guide to managing, monitoring, troubleshooting, and optimizing large VoIP networks. Three leading Cisco VoIP experts bring together state-of-the-art techniques for ensuring that customer service level agreements (SLA) are consistently met or exceeded.

The authors begin by reviewing how VoIP is deployed in enterprise and service provider networks and the performance tradeoffs and challenges associated with each leading VoIP deployment model. Next, they present a comprehensive approach to diagnosing problems in VoIP networks using key performance indicators (KPI) and proactively addressing issues before they impact service.

In this book, you will find a proven tools-based strategy for gauging VoIP network health and maximizing performance and voice quality. You also will learn how to perform trend analysis and use the results for capacity planning and traffic engineering—thereby optimizing your networks for both the short- and long-term.

The authors all work in the Cisco Advanced Services Group.

• Deploy, manage, monitor, and scale multivendor VoIP networks more effectively
• Integrate performance data from multiple VoIP network segments and service flows to effectively manage SLAs
• Use performance counters, call detail records, and call agent trace logs to gauge network health in real time
• Utilize dashboards to analyze and correlate VoIP metrics, analyze trends, and plan capacity
• Implement a layered approach to quickly isolate and troubleshoot both localized and systemic problems in VoIP networks
• Optimize performance in networks where the service provider owns the “last mile” connection
• Improve performance when VoIP is deployed over publicly shared infrastructure
• Manage performance in enterprise networks using both centralized and distributed call processing
• Plan media deployment for the best possible network performance
• Monitor trends, establish baselines, optimize existing resources, and identify emerging problems
• Understand and address common voice quality issues

This IP communications book is part of the Cisco Press® Networking Technology Series. IP communications titles from Cisco Press help networking professionals understand voice and IP telephony technologies, plan and design converged networks, and implement network solutions for increased productivity.

Category: Networking: Unified Communications

Covers: Voice over IP Network Management

Table of Contents

Foreword

Introduction

Part I VoIP Networks Today

Chapter 1 Voice over IP (VoIP) and Network Management 1

VoIP Technology 2

VoIP Overview 3

    Media Transport Protocol for VoIP—RTP 5

    VoIP Signaling Protocols 8

Common Network Problems in VoIP Networks 9

    Delay/Latency 9

        Propagation Delay 10

        Processing Delay 10

        Serialization/Queuing Delay 11

    Jitter 11

    Packet Loss 12

    Voice Activity Detection (VAD) 13

    Other Issues 13

Common Voice Quality Problems in IP Networks 14

Strategic Importance of VoIP and Management 18

Network Management Methodologies 20

    Telecommunications Management Network 20

    FCAPS Model 21

        Fault Management 21

        Configuration Management 21

        Accounting Management 22

        Performance Management 22

        Security Management 22

    Information Technology Infrastructure Library (ITIL) 23

        Service Strategy 23

        Service Design 24

        Service Transition 25

        Service Operation 26

        Continual Service Improvement 27

    Enhanced Telecom Operations Map (eTOM) 27

Comprehensive Network Management Methodology 28

    Focusing on Performance Metrics 30

Summary 32

Reference 32

Chapter 2 A Metrics-Based Approach for Managing the VoIP Network 33

VoIP Networks Require a Layered Management Approach 34

    Tracking Systemic Performance Issues 37

    Localized Performance Issues 39

    Subjective Performance Issues 39

    Downtime and Impact 40

Proactive Monitoring Concept 41

KPIs 43

    VoIP-Signaling KPIs 44

    VoIP Media KPIs 45

VoIP Network Segments and VoIP Service Flows 46

    Voicemail Segment 46

    Announcement Segment 47

    Voice Termination Point Segment 47

      

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