Exam (elaborations) TEST BANK FOR CISCO TECHNICAL SOLUTION SERIES IP Telephony Solution Guide Version 2.1

Introduction to IP Telephony 1-1 Overview 1-1 Organization 1-1 Audience 1-2 Scope 1-2 Revision History 1-2 Related Information 1-3 CHAPTER 2 IP Telephony Architecture Overview 2-1 CHAPTER 3 Planning the IP Telephony Network 3-1 In this Chapter 3-1 Related Information 3-1 Evaluating and Documenting the Existing Data Infrastructure 3-1 LAN/Campus Environment 3-2 WAN Environment 3-7 Evaluating and Documenting the Existing Telecom Infrastructure 3-10 Examining the Existing Telecom Topology 3-11 Examining PBX and Key Systems 3-12 Examining Voice Mail Systems 3-12 Examining Voice Trunking 3-12 Phones per Site and Phone Features 3-17 Examining the Existing Dial Plan 3-17 Fax Requirements 3-21 Evaluating and Documenting the Existing Power/Cabling Infrastructure 3-21 Data Center Power Requirements 3-22 Wiring Closet Power 3-23 IP Telephony Availability Requirements 3-24 Hardware Reliability 3-25 Software Reliability 3-26 Link/Carrier Availability 3-27 Power/Environment 3-29 Network Design 3-31 User Error and Process 3-33 Planning for WAN Deployments 3-34 Collecting Information on the Current WAN Environment 3-34 Determining Voice Bandwidth Requirements 3-38 Analyzing Upgrade Requirements 3-41 Contents iv Cisco Technical Solution Series: IP Telephony Solution Guide Version 2.1 Performing Upgrades and Implementing Tuning 3-43 Assessing Results 3-43 Operational Turnover and Production 3-44 Operations and Implementation Planning 3-44 IP Telephony Capacity Planning 3-44 Solution Manageability Requirements 3-48 Staffing and Expertise Requirements 3-51 Operations Support Plan 3-56 CHAPTER 4 Designing the IP Telephony Network 4-1 In this Chapter 4-1 Related Information 4-1 Overview 4-2 Introduction to IP Telephony Design 4-2 Designing the Campus Infrastructure 4-2 Designing for LAN/WAN QoS 4-2 The Importance of QoS 4-2 Connecting the IP Phone 4-8 Enabling the High Speed Campus 4-17 Building a Branch Office 4-42 Enabling the Wide Area Network 4-47 Summary 4-72 Designing Cisco CallManager Clusters 4-73 Selecting Gateways 4-73 Dial Plan Architecture and Configuration 4-73 Designing a Multi-site WAN with Distributed Call Processing 4-73 Designing a Multi-site WAN with Centralized Call Processing 4-73 Catalyst DSP Provisioning 4-73 Cisco Packet Fax and Modem Support Guidelines 4-73 Cisco IOS VoIP Router Gateways 4-74 Cisco VG200 4-75 Catalyst 6000 VoIP Gateways 4-76 DT-24+/DT-30+ Gateways 4-77 Future T.38 Fax-relay Support 4-77 E911 and 911 Emergency Services 4-78 Today’s E9-1-1 Service 4-78 IP Telephony Emergency Call Support 4-81 Security Considerations for IP Telephony Networks 4-86 Contents v Cisco Technical Solution Series: IP Telephony Solution Guide Version 2.1 Infrastructure Security Best Practices 4-87 Securing CallManager Servers 4-95 Integrating Voice Mail 4-107 Voice Messaging with Cisco uOne 4.1E 4-107 Integrating SMDI Voice Mail 4-108 Integrating SMDI Voice Mail Over IP WAN 4-139 Migrating to an IP Telephony Network 4-142 CHAPTER 5 Implementing the IP Telephony Network 5-1 In this Chapter 5-1 Related Information 5-1 Preparing for Implementation 5-2 General Site Information 5-2 Conducting the Site Survey 5-7 Site Survey Tables 5-7 Determining Site Requirements 5-9 LAN Requirements 5-9 WAN Requirements 5-10 Validating Implementation Readiness 5-18 Solution Design Review 5-19 Network Topology Analysis 5-19 Voice Network Analysis 5-19 Data Network Analysis 5-20 Solution Implementation Templates 5-24 Customer Ordered Equipment 5-30 Customer Premises Equipment (CPE) Interface 5-31 Customer Site Readiness 5-31 Implementing the Solution 5-31 Unpacking the Equipment 5-32 Verifying Cabinet Power Feeds, Rails, and Earthing 5-32 Physically Installing Equipment in Cabinet 5-32 Recording Equipment Serial Numbers 5-33 Verifying Equipment Slot Allocations 5-33 Installing Intra-Cabinet Power Cables 5-33 Installing Intra- and Inter-Cabinet Communications Cables 5-33 Verifying Circuit Termination in Customer Patch Panel 5-33 Powering Up Cisco Equipment 5-34 Verifying and Loading System Software and Firmware 5-34 Configuring the Equipment 5-34 Contents vi Cisco Technical Solution Series: IP Telephony Solution Guide Version 2.1 Implementing the Dial Plan 5-34 Configuring E-911 5-36 Conducting Installation Tests 5-47 Fallback Procedures 5-47 Implementing a Migration Strategy 5-47 Migrating from a TDM Network to Cisco IP Telephony Solution 5-48 Upgrading Cisco CallManager 5-48 Migration Phases 5-48 Solution Implementation Acceptance Testing 5-49 Verification Process 5-49 Acceptance Criteria 5-50 Post-implementation Documentation 5-51 Asset Tag and Cable Labeling 5-51 Customer Acceptance Certification 5-51 Completing the Implementation Reports 5-52 Case Studies 5-52 CHAPTER 6 Operating the IP Telephony Network 6-1 Related Information 6-1 Operations Support and Planning 6-1 Defining Technical Goals and Constraints 6-2 Service Level Goals 6-5 Determining the Relevant Parties 6-6 Defining Service Elements 6-6 Staffing and Support Model 6-23 Documenting and Approving the Operations Support Plan 6-25 Network Management 6-25 Functional Areas of Network Management 6-25 Network Management Solutions 6-26 Network Management Architecture 6-29 Managing Voice Over IP Network and Element Layers 6-32 NMS Reference Architecture 6-62 Managing Cisco CallManager with CISCO-CCM-MIB 6-65 Summary of IP Telephony Network Management Products 6-67 Securing IP Telephony Networks 6-68 Security Policy Best Practices 6-69 Establishing Physical Security 6-69 Protecting the Network Elements 6-70 Designing the IP Network 6-80 Contents vii Cisco Technical Solution Series: IP Telephony Solution Guide Version 2.1 Securing the CallManager Server 6-93 Troubleshooting IP Telephony Networks 6-103 Troubleshooting Tools 6-103 Troubleshooting Cisco CallManager Devices 6-115 Call Detail Records 6-167 APPENDIX A Cisco ICS 7750 and Cisco CallManager 3.1 A-1 IP Telephony Requirement Analysis A-1 Recommended Implementation Configurations A-2 Contents viii Cisco Technical Solution Series: IP Telephony Solution Guide Version 2.1 C H A P T E R 1-1 Cisco Technical Solution Series: IP Telephony Solution Guide Version 2.1 1 Introduction to IP Telephony Overview The Cisco IP Telephony Solution Guide is intended to help organizations implement and manage IP Telephony network solutions, which includes Planning, Design, Implementation, and Operations network phases. This method is called the PDIO model. Cisco experts in IP Telephony design, network design, customer support, high availability, network management, network implementation, and traditional telecom systems collaborated to create this document so that you can reduce guesswork, technical resources, and the time needed to ensure successful implementation of a Cisco IP Telephony network. Organization This solution guide consists of the following sections: • Introduction to IP Telephony - provides a brief introduction to this manual. • Chapter 2, “IP Telephony Architecture Overview” provides a general description of the IP Telephony architecture. • Chapter 3, “Planning the IP Telephony Network” provides information necessary for planning IP Telephony solutions. • Chapter 4, “Designing the IP Telephony Network” provides detailed design specifications for building IP Telephony networks. • Chapter 5, “Implementing the IP Telephony Network” provides important information for successfully implementing IP Telephony. • Chapter 6, “Operating the IP Telephony Network” provides information for successfully operating, networking, securing, and troubleshooting IP Telephony networks. • Appendix A, “Cisco ICS 7750 and Cisco CallManager 3.1” provides IP Telephony information that is specific to Cisco Integrated Communications System 7750 (ICS 7750) and Cisco CallManager