CVOICE Cisco Voice Over IP Version 4.2 Student Guide Copyright © 2004, Cisco Systems, Inc Student Guide i Copyright 2004, Cisco Systems, Inc All rights reserved Cisco Systems has more than 200 offices in the following countries and regions Addresses, phone numbers, and fax numbers are listed on the Cisco Web site at www.cisco.com/go/offices Argentina Australia Austria Belgium Brazil Bulgaria Canada Chile China PRC Colombia Costa Rica Croatia Czech Republic Denmark Dubai, UAE Finland France Germany Greece Hong Kong SAR Hungary India Indonesia Ireland Israel Italy Japan Korea Luxembourg Malaysia Mexico The Netherlands New Zealand Norway Peru Philippines Poland Portugal Puerto Rico Romania Russia Saudi Arabia Scotland Singapore Slovakia Slovenia South Africa Spain Sweden Switzerland Taiwan Thailand Turkey Ukraine United Kingdom United States Venezuela Vietnam Zimbabwe Copyright 2004, Cisco Systems, Inc All rights reserved CCIP, the Cisco Powered Network mark, the Cisco Systems Verified 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trademarks of Cisco Systems, Inc and/or its affiliates in the U.S and certain other countries All other trademarks mentioned in this document or Web site are the property of their respective owners The use of the word partner does not imply a partnership relationship between Cisco and any other company (0203R) ii Enterprise Voice Over Data Design (EVODD) v3.3 Copyright © 2004, Cisco Systems, Inc Table of Contents Course Introduction Overview Course Goal and Objectives Course Outline Cisco Certifications Learner Skills and Knowledge Learner Responsibilities General Administration Course Flow Diagram Icons and Symbols Learner Introductions Introduction to Packet Voice Technologies Overview Module Objectives Module Outline Understanding Traditional Telephony Overview Relevance Objectives Learner Skills and KnowledgeNet Outline 1 1-1 1-1 1-2 1-2 1-3 1-3 1-3 1-3 1-3 1-4 Basic Components of a Telephony Network CO Switches Private Switching Systems Call Signaling Multiplexing Techniques Summary 1-5 1-7 1-9 1-13 1-18 1-20 Quiz 1-21 References Quiz Answer Key Understanding Packetized Telephony Networks Overview Relevance Objectives Learner Skills and KnowledgeNet Outline 1-20 1-27 1-25 1-25 1-25 1-25 1-26 1-26 Benefits of Packet Telephony Networks Call Control Distributed vs Centralized Call Control Packet Telephony Components Best Effort Delivery of Real-Time Traffic Summary 1-27 1-29 1-30 1-32 1-33 1-34 Quiz 1-36 References Quiz Answer Key Understanding IP Telephony Applications Overview 1-35 1-39 1-41 1-41 Relevance Objectives Learner Skills and KnowledgeNet Outline 1-41 1-41 1-42 1-42 Analog Interfaces Digital Interfaces IP Phones Campus LAN Environment Enterprise Environment Service Provider Environment Summary 1-43 1-46 1-49 1-53 1-55 1-59 1-60 Quiz 1-62 References Quiz Answer Key 1-61 1-65 Analog and Digital Voice Connections 2-1 Overview 2-1 Module Objectives Module Outline 2-1 2-2 Understanding Analog Voice Basics Overview Relevance Objectives Learner Skills and KnowledgeNet Outline 2-3 2-3 2-4 2-4 Local Loop Connections Types of Local Loop Signaling Supervisory Signaling Address Signaling Informational Signaling Trunk Connections Types of Trunk Signaling E & M Signaling Types Trunk Signal Types and Used by E & M Line Quality Management of Echo Summary 2-5 2-6 2-7 2-11 2-13 2-14 2-17 2-21 2-26 2-29 2-31 2-33 Quiz 2-35 References Quiz Answer Key Undetstanding Analog-to-Digital Voice Encoding Overview Relevance Objectives Learner Skills and KnowledgeNet Outline Basic Voice Encoding: Converting Analog to Digital Basic Voice Encoding: Converting Digital to Analog The Nyquist Theorem Quantization Voice Compression and Codec Standards G.729 and G.729A Compared ii 2-3 2-3 Cisco Voice Over IP 2-34 2-40 2-43 2-43 2-43 2-43 2-44 2-44 2-45 2-47 2-48 2-49 2-52 2-56 Copyright © 2004, Cisco Systems, Inc Compresson Bandwidth Requiremens Voice Quality Measurement Summary 2-58 2-59 2-61 Quiz 2-63 References Quiz Answer Key Understanding Signaling Systems Overview Relevance Objectives Learner Skills and KnowledgeNet Outline 2-62 2-66 2-67 2-67 2-67 2-67 2-68 2-68 CAS Systems T1 CAS Systems E1 CCS Systems ISDN QSIG DPNSS SIGTRN SS7 Signaling Systems Interworking Summary 2-69 2-73 2-75 2-76 2-79 2-80 2-81 2-82 2-84 2-85 Quiz 2-86 References Quiz Answer Key Understanding Fax and Modem over VoIP Overview Relevance Objectives Learner Skills and KnowledgeNet Outline 2-85 2-90 2-93 2-93 2-93 2-93 2-94 2-94 Cisco Fax Relay T.38 Fax Relay T.37 Fax Store and Forward Fax Pass-Through Modem Pass-Through Modem Relay Summary 2-95 2-97 2-98 2-100 2-102 2-104 2-105 Quiz 2-106 References Quiz Answer Key 2-105 2-109 Configuring Voice Interfaces 3-1 Overview 3-1 Module Objectives Module Outline 3-1 3-2 Configuring Voice Ports Overview 3-3 3-3 Relevance Objectives Learner Skills and Knowledge Outline iii Cisco Voice Over IP 3-3 3-3 3-4 3-4 Copyright © 2004, Cisco Systems, Inc Voice Port Applications FXS Ports FXO Ports E&M Ports Digital Voice Ports ISDN CCS Options Monitoring and Troubleshooting Summary 3-5 3-13 3-16 3-18 3-22 3-25 3-27 3-29 3-33 Quiz 3-35 References 3-34 Quiz Answer Key Adjusting Voice Quality Overview Relevance Objectives Learner Skills and Knowledge Outline 3-39 3-41 3-41 3-41 3-41 3-41 3-42 Electrical Characteristics Voice Quality Tuning Echo Cancellation Commands Summary 3-43 3-46 3-49 3-52 Quiz 3-53 Voice Dial Plans 4-1 References Quiz Answer Key 3-52 3-55 Overview 4-1 Module Objectives Module Outline 4-1 4-2 Understanding Call Establishment Principles Overview 4-3 4-3 Relevance Objectives Learner Skills and Knowledge Outline 4-3 4-3 4-3 4-4 What Are Call Legs? End-to-End Calls Summary 4-5 4-6 4-8 Quiz 4-9 References Quiz Answer Key Configuring Dial Peers Overview Relevance Objectives Learner Skills and Knowledge Outline Understanding Dial Peers Configuring POTS Dial Peers Configuring VoIP Dial Peers iv Cisco Voice Over IP 4-8 4-11 4-13 4-13 4-13 4-13 4-14 4-14 4-16 4-19 4-22 Copyright © 2004, Cisco Systems, Inc Configuring Destination-Pattern Options Default Dial Peer Matching Inbound Dial Peers Matching Outbound Dial Peers Hunt-Group Commands Configuring Hunt Groups Understanding Digit Manipulation Summary 4-25 4-28 4-30 4-33 4-35 4-36 4-43 4-48 Quiz 4-50 References 4-49 Quiz Answer Key 4-56 Understanding Special-Purpose Connections Overview 4-61 4-61 Relevance Objectives Learner Skills and Knowledge Outline 4-61 4-61 4-61 4-62 Connection Commands PLAR and PLAR-OPX Configuring Trunk Connections Tie-Line Connections Summary 4-63 4-65 4-67 4-69 4-70 Quiz 4-72 References 4-71 Quiz Answer Key 4-74 Building a Scalable Numbering Plan Overview 4-75 4-75 Relevance Objectives Learner Skills and Knowledge Outline 4-75 4-75 4-75 4-76 Scalable Numbering Plan Scalable Numbering Plan Attributes Hierarchical Numbering Plans Internal Numbering and Public Numbering Plan Integration Enhancing and Extending an Existing Plan to Accommodate VoIP Summary 4-77 4-79 4-81 4-82 4-85 4-87 Quiz 4-89 References Quiz Answer Key 4-92 Introduction to VoIP 5-1 Overview 5-1 Module Objectives Module Outline 5-1 5-2 Understanding the Requirements of Voice in an IP Internetwork Overview Relevance Objectives Learner Skills and Knowledge Outline Real-Time Voice in a Best-Effort IP Internetwork v Cisco Voice Over IP 4-88 5-3 5-3 5-3 5-3 5-4 5-4 5-5 Copyright © 2004, Cisco Systems, Inc Packet Loss, Delay, and Jitter Consistent Throughput Reordering of Voice Packets Reliability and Availability Summary 5-7 5-9 5-11 5-13 5-15 Quiz 5-16 Next Steps 5-15 Quiz Answer Key 5-19 Understanding Gateways and Their Roles Overview Relevance Objectives Learner Skills and Knowledge Outline 5-21 5-21 5-21 5-22 Understanding Gateways Guidelines for Selecting the Correct Gateway Determining Gateway Interconnection Requirements in an Enterprise Environment, Central and Remote Site Determining Gateway Interconnection Requirements in a Service Provider Environment Summary 5-23 5-24 Quiz 5-32 References Quiz Answer Key Encapsulating Voice in IP Packets Overview Relevance Objectives Learner Skills and Knowledge Outline 5-26 5-29 5-31 5-31 5-34 5-35 5-35 5-35 5-35 5-35 5-36 Major VoIP Protocols RTP and RTCP Reducing Header Overhead with CRTP When to Use RTP Header Compression Summary 5-37 5-40 5-43 5-45 5-47 Quiz 5-48 References Quiz Answer Key Calculating Bandwidth Requirements Overview Relevance Objectives Learner Skills and Knowledge Outline Codec Bandwidths Impact of Voice Samples and Packet Size on Bandwidth Data Link Overhead Security and Tunneling Overhead Specialized Encapsulations Calculating the Total Bandwidth for a VoIP Call Effects of VAD on Bandwidth Summary vi 5-21 5-21 Cisco Voice Over IP 5-47 5-50 5-51 5-51 5-51 5-51 5-52 5-52 5-53 5-55 5-56 5-57 5-58 5-59 5-60 5-62 Copyright © 2004, Cisco Systems, Inc References Quiz Quiz Answer Key Understanding Security Implications Overview Relevance Objectives Learner Skills and Knowledge Outline 5-62 5-63 5-66 5-67 5-67 5-67 5-67 5-68 5-68 Security Policies for VoIP Networks Cisco SAFE Blueprint for VoIP Communicating Through a Firewall Delivery of VoIP Through a VPN Bandwidth Overhead Associated with VPN Summary 5-69 5-71 5-73 5-75 5-77 5-79 Quiz 5-80 References Quiz Answer Key 5-79 5-83 VoIP Signaling and Call Control 6-1 Overview 6-1 Module Objectives Module Outline Understanding the Need for Signaling and Call Control Overview 6-3 6-3 VoIP Signaling Call Control Models Translation Between Signaling and Call Control Models Call Setup Call Administration and Accounting Call Status and Call Detail Records Address Management Admission Control Centralized Call Control Distributed Call Control Centralized Call Control vs Distributed Call Control Summary 6-5 6-7 6-8 6-10 6-12 6-13 6-14 6-16 6-17 6-18 6-19 6-21 Quiz 6-23 Relevance Objectives Learner Skills and Knowledge Outline References Quiz Answer Key Configuring H.323 Overview Relevance Objectives Learner Skills and Knowledge Outline H.323 and Associated Recommendations vii 6-2 6-2 Cisco Voice Over IP 6-3 6-3 6-4 6-4 6-22 6-28 6-31 6-31 6-31 6-31 6-32 6-33 6-34 Copyright © 2004, Cisco Systems, Inc H.323 Call Establishment and Maintenance Call Flows Without a Gatekeeper Call Flows with a Gatekeeper Multipoint Conferences Call Flows with Multiple Gatekeepers Survivability Strategies H.323 Proxy Server Cisco Implementation of H.323 Configuring H.323 Gateways Configuring H.323 Gatekeepers Monitoring and Troubleshooting Summary 6-42 6-45 6-48 6-50 6-52 6-54 6-56 6-58 6-59 6-62 6-64 6-66 Quiz 6-68 References Quiz Answer Key Configuring SIP Overview Relevance Objectives Learner Skills and Knowledge Outline SIP and Its Associated Standards Components of SIP SIP Messages SIP Addressing Call Setup Models Survivability Strategies Cisco Implementation of SIP Configuring SIP on a Cisco Router Monitoring and Troubleshooting Summary References Quiz Quiz Answer Key Configuring MGCP Overview Relevance Objectives Learner Skills and Knowledge Outline MGCP and Its Associated Standards Basic MGCP Components MGCP Endpoints MGCP Gateways MGCP Call Agents MGCP Calls and Connections MGCP Events and Signals MGCP Packages MGCP Digit Maps MGCP Control Commands Call Flows viii Cisco Voice Over IP 6-67 6-74 6-77 6-77 6-77 6-77 6-78 6-78 6-79 6-82 6-84 6-87 6-90 6-93 6-94 6-95 6-97 6-99 6-100 6-101 6-105 6-107 6-107 6-107 6-107 6-108 6-109 6-110 6-111 6-112 6-115 6-117 6-119 6-121 6-123 6-125 6-126 6-127 Copyright © 2004, Cisco Systems, Inc ạạãạ -Đẵáđôạã ãằ ôă ãằ êơĐ ỡ âđẳ ộ ùùùịùờùớùộùỗ ạã ãằ êơĐ ùở âđẳ ộ ợùỡịỡùớùĩ ạã end Lab Exercise 6-3: VoIP with MGCP When you complete this lab exercise, your router configuration will be similar to the following, with differences that are specific to your pod êằđ-ã ùợũợ -ằđêãẵằ ơãằ-ơ- ẳằắôạ ẳơằơãằ -ằẵ -ằđêãẵằ ơãằ-ơ- ẳơằơãằ -ằẵ -ằđêãẵằ âđẳúằẵđĐơã á-ơằ éẳùẻù ằắằ âđẳ ộ ốớợỡĩỡỡỡùùộùờùí êãẵằúẵđẳ ù ã -ôắằơúƯằđ êãẵằ ẵ ẵđđãằđ ẵẵãơĐ ẵơãêằ ÿ ÿ ÿ ÿ 78 Cisco Voice over IP (CVOICE) v4.2 Copyright © 2004, Cisco Systems, Inc ÿ ÿ đằẵằãêằ ăãôúđằẵããằơ- ẵơđằđ èù ùủ đãạ ằ- ẵẵà -ôđẵằ ãơằđ ãằẵẳằ ắốƯẳ-úạđô ù ơãằ-ơ- ùúợỡ ơĐằ ă-úú-ơđơ ẵơđằđ èù ùủù đãạ - ãằẵẳằ ã ãơằđẵằ ễắẵàù ã ẳẳđằ- ãơằđẵằ ơáằđằơủ ã ẳẳđằ ùũùũùũù ợởởũợởởũợởởũ áúẳôằă áớợớúạơằâĐ êã ãơằđẵằ áớợớúạơằâĐ êã ãẳ ạàùđù ãẳẳđ ùũùũùũù ùộùỗ áớợớúạơằâĐ êã áớợớúãẳ ạâéùẻù ãơằđẵằ ằđãủ ã ẳẳđằ ùỗợũùờốũùũùù ợởởũợởởũợởởũ ằẵ-ôơã đằúđằĐ đằúđằĐ ã áằẳằđúẵđằ ã ãơằđẵằ ơáằđằơủù ã ẳẳđằ áôơẳâ áúẳôằă ãơằđẵằ ằđãủù Copyright â 2004, Cisco Systems, Inc Lab Guide 79 ã ẳẳđằ ùũùũùũù ợởởũợởởũợởởũ ằẵ-ôơã ã ơẵ áằẳằđúẵđằ ã ãáẵúđơ ã áằẳằđúẵđằ ã ãáẵúđơ ãơằđẵằ -ơơáằđằơớủ ã ẳẳđằ áôơẳâ ẳôằă ôơ -ằằẳ ôơ đôơằđ ằãạđ ù ằơâđà ùũũũ ằơâđà ùỗợũùờốũùũ ôơú-ôđĐ ằãạđ ạúằãạáắđúẵáạằ ã ẵ ằ-ã áơơ -ằđêằđ đôơằú ằãđạ ằđãơ ù ẵ đ-êú-Đẵ êãẵằúđơ ùủổù ôơôơ ơơằôơã ẵằẵơã èãằúãằ ộ êãẵằúđơ ợủủ êãẵằúđơ ợủủù êãẵằúđơ ợủùủ êãẵằúđơ ợủùủù 80 Cisco Voice over IP (CVOICE) v4.2 Copyright © 2004, Cisco Systems, Inc ạẵ ạẵ ẵúạằơ ùỗợũùờốũùũù -ằđêãẵằúơĐằ ạẵ êằđ-ã ũù ạẵ đãằ ẳằôơ ẳãúằằđ ẵđ ẵô-ơ ẳãúằằđ êãẵằ ùùù ơẳằ-ơãơãúơơằđ ùùù ãẵơã ạẵ ẳãúằằđ êãẵằ ùùợ ơẳằ-ơãơãúơơằđ ùùợ ãẵơã ạẵ ẳãúằằđ êãẵằ ơẳằ-ơãơãúơơằđ ởởởũũũũ ợủủ đâđẳúẳãạãơ- ẳãúằằđ êãẵằ ơẳằ-ơãơãúơơằđ ùùởù ùủổù đâđẳúẳãạãơ- ẳãúằằđ êãẵằ ộ êã ẳằ-ơãơãúơơằđ ộũũũũ -ằ ã ơđạằơ ãêỡổùũùũùũợ ẳãúằằđ êãẵằ ố ơẳằ-ơãơãúơơằđ ốũũũũ ùủổù ẳãúằằđ êãẵằ ỗ êã ẳằ-ơãơãúơơằđ ùợù -ằ ã đơẵ -ãêợ -ằ ã ơđạằơ ãêỡổùũùũùũợ Copyright â 2004, Cisco Systems, Inc Lab Guide 81 ẳãúằằđ êãẵằ ù êã ẳằ-ơãơãúơơằđ ùợợ -ằ ã đơẵ -ãêợ -ằ ã ơđạằơ ãêỡổùũùũùũợ ẳãúằằđ êãẵằ ùù êã ẳằ-ơãơãúơơằđ ũũũũ -ằ ã ơđạằơ đ ẳãúằằđ áôơ ộ ạơằâĐ -ãúô ã ạơằàằằằđ Ưằ ẵ ạàùđù ẵã-ẵũẵ ùũùũùũù Ưằ đằơằ ạàợđù ẵã-ẵũẵ ùũợũùũù ùộùỗ Ưằ đằơằ ạàợđợ ẵã-ẵũẵ ùũợũợũù ùộùỗ Ưằ đằơằ ạàớđù ẵã-ẵũẵ ùũớũùũù ùộùỗ Ưằ đằơằ ạàớđợ ẵã-ẵũẵ ùũớũợũù ùộùỗ Ưằ đằãă ạàợđù ợùũũ Ưằ đằãă ạàợđợ ợợũũ Ưằ đằãă ạàớđù ớùũũ Ưằ đằãă ạàớđợ ớợũũ -áôơẳâ ãằ ẵ ằăằẵúơãằôơ âđẳ ộ ùớùộùốộùỗùờ ạạãạ -Đẵáđôạã ãằ ôă ãằ êơĐ ỡ âđẳ ộ ùùùịùờùớùộùỗ ạã ãằ êơĐ ë ïë 82 Cisco Voice over IP (CVOICE) v4.2 Copyright â 2004, Cisco Systems, Inc âđẳ ộ ợùỡịỡùớùĩ ´±¹·² ÿ ÿ end Lab Exercise 7-1: QoS When you complete this lab exercise, your router configuration will be similar to the following, with differences that are specific to your pod êằđ-ã ùợũớ -ằđêãẵằ ơãằ-ơ- ẳằắôạ ẳơằơãằ -ằẵ -ằđêãẵằ ơãằ-ơ- ẳơằơãằ -ằẵ -ằđêãẵằ âđẳúằẵđĐơã á-ơằ éẳùẻù ắơú-ơđơúđàằđ ắơúằẳúđàằđ ằắằ âđẳ ộ ốớợỡĩỡỡỡùùộùờùí êãẵằúẵđẳ ù ằâúẳằ ã -ôắằơúƯằđ ã ẵằ êãẵằ ẵ ẵđđãằđ ẵẵãơĐ ẵơãêằ Copyright â 2004, Cisco Systems, Inc Lab Guide 83 ÿ ÿ ÿ ẵơđằđ èù ùủ đãạ ằ- ẵđẵúơáđằ-áẳ ớợ ẵẵà -ôđẵằ ãơằđ ãằẵẳằ ắốƯẳ-úạđô ù ơãằ-ơ- ùúùợ ơĐằ ă-úú-ơđơ ẵ ú ơẵáúĐ òôơẽúấìéúẻằđà ơẵá ã ẳ-ẵ ằ ơẵá ã ẳ-ẵ ẵ-ớ ơẵá ã ẳ-ẵ ớù ẵ ú ơẵáúĐ òôơẽúấìéúíơđúậèđô-ơ ơẵá ẵẵằ úạđô ằ òôơẽúấìéúíơđ ẵ ú ơẵáúĐ òôơẽúấìéúẻèéúậèđô-ơ ơẵá đơẵ ôẳã ơẵá ẵẵằ úạđô ằ òôơẽúấìéúẻèíé ãẵĐú òôơẽúéãẵĐúậèđô-ơ ẵ òôơẽúấìéúẻèéúậèđô-ơ đãđãơĐ ằđẵằơ ộ -ằơ ẳ-ẵ ằ ẵ òôơẽúấìéúíơđúậèđô-ơ ắẳâãẳơá ằđẵằơ -ằơ ẳ-ẵ ớù ẵ òôơẽúấìéúẻằđà -ằơ ẳ-ẵ ẳằôơ ẵ ẵ úẳằôơ ãđúôằôằ ãơằđẵằ ễắẵàù 84 Cisco Voice over IP (CVOICE) v4.2 Copyright © 2004, Cisco Systems, Inc ã ẳẳđằ- ãơằđẵằ ơáằđằơủ ã ẳẳđằ ùũùũùũù ợởởũợởởũợởởũ áúẳôằă áớợớúạơằâĐ êã ãơằđẵằ áớợớúạơằâĐ êã ãẳ ạàùđù ãẳẳđ ùũùũùũù ùộùỗ áớợớúạơằâĐ êã áớợớúãẳ ạâéùẻù ãơằđẵằ ằđãủ ã ẳẳđằ-ằẵ-ôơã đằúđằĐ đằúđằĐ ơđãẵú-áãạ đằúđằĐ ã áằẳằđúẵđằ ã ãơằđẵằ ằđãủũù ãơúơúãơ ắẳâãẳơá ộợ ã ẳẳđằ ùỗợũùờốũùũùù ợởởũợởởũợởởũ đằúđằĐ ãơằđẵằúẳẵã ùợ ẵ òôơẽúấìéúẻúằđãủúùợ ôơ - êã đằúđằĐ ã áằẳằđúẵđằ ã ãơằđẵằ ằđãủù ã ẳẳđằ-ằẵ-ôơã ã ơẵ áằẳằđúẵđằ ã ãáẵúđơ -áôơẳâ ẵẵàđơằ ộợ ã áằẳằđúẵđằ ã ãáẵúđơ đôơằđ ằãạđ ù ằơâđà ùũũũ ằơâđà ùỗợũùờốũùũ ôơú-ôđĐ ằãạđ ạúằãạáắđúẵáạằ ã áơơ -ằđêằđ ã ẵ ằ- Copyright â 2004, Cisco Systems, Inc Lab Guide 85 ã ẵẵằ úã-ơ ằăơằẳằẳ òôơẽúấìéúíơđ ằđãơ ơẵ Đ Đ ằ ùộợ ằđãơ ơẵ Đ Đ đạằ ùù ùùỗỗỗ ằđãơ ôẳ Đ Đ ằ ợỡợộ ằđãơ ơẵ Đ Đ ằ ợỡợố ằđãơ ơẵ Đ Đ đạằ ợ ợợ ằđãơ ôẳ Đ Đ ằ ùộùỗ ằđãơ ôẳ Đ Đ ằ ởờ ã ẵẵằ úã-ơ ằăơằẳằẳ òôơẽúấìéúẻèíé ằđãơ ôẳ Đ Đ đạằ ùờớốỡ ớợộờộ úẵ đằúđằĐ òôơẽúấìéúẻúằđãủúùợ đằúđằĐ ẵãđ ộợ đằúđằĐ ắẵ ộợ đằúđằĐ ắằ đằúđằĐ ãẵãđ ộợ -ằđêãẵằúãẵĐ ôơôơ òôơẽúéãẵĐúậèđô-ơ đằúđằĐ đạằơ ỗ đôơằú ằãđạ ằđãơ ù ẵơđúằ đ ằêằơ ớớớớớ ơđ òôơẽ ẳằ-ẵđãơã ỵòôơẽ ềểé ơđ- đ ấãẵằ ĩđ -ỵ âằđ òôơẽ đ đ ớớớớớ ẵắẽ-íểĩđịãơẻơằũùốùũùốớ ắ-ôơằ đã-ãạúơáđằ-áẳ ù ớớớ ớớ ãạúơáđằ-áẳ âằđ òôơẽ êãẵằúđơ ùủổù ôơôơ ơơằôơã êãẵằúđơ ợủủ êãẵằúđơ ợủủù 86 Cisco Voice over IP (CVOICE) v4.2 Copyright â 2004, Cisco Systems, Inc êãẵằúđơ ợủùủ êãẵằúđơ ợủùủù ẳãúằằđ ẵđ ẵô-ơ ẳãúằằđ êãẵằ ùùù ơẳằ-ơãơãúơơằđ ùùù ợủùủ ẳãúằằđ êãẵằ ùùợ ơẳằ-ơãơãúơơằđ ùùợ ợủùủù ẳãúằằđ êãẵằ ơẳằ-ơãơãúơơằđ ởởởũũũũ ợủủ đâđẳúẳãạãơ- ẳãúằằđ êãẵằ ơẳằ-ơãơãúơơằđ ùùởù ùủổù đâđẳúẳãạãơ- ẳãúằằđ êãẵằ ộ êã ẳằ-ơãơãúơơằđ ộũũũũ -ằ ã ơđạằơ ãêỡổùũùũùũợ ẳãúằằđ êãẵằ ố ơẳằ-ơãơãúơơằđ ốũũũũ ùủổù ẳãúằằđ êãẵằ ỗ êã ẳằ-ơãơãúơơằđ ùợù Copyright â 2004, Cisco Systems, Inc Lab Guide 87 -ằ ã ơđạằơ ãêỡổùỗợũùờốũùũùợ ẳãúằằđ êãẵằ ù êã ẳằ-ơãơãúơơằđ ùợợ -ằ ã ơđạằơ ãêỡổùỗợũùờốũùũùợ ẳãúằằđ êãẵằ ùù êã ẳằ-ơãơãúơơằđ ũũũũ -ằ ã ơđạằơ đ ẳãúằằđ áôơ ộ ạơằâĐ ạơằàằằằđ Ưằ ẵ ạàùđù ẵã-ẵũẵ ùũùũùũù Ưằ đằơằ ạàợđù ẵã-ẵũẵ ùũợũùũù ùộùỗ Ưằ đằơằ ạàợđợ ẵã-ẵũẵ ùũợũợũù ùộùỗ Ưằ đằơằ ạàớđù ẵã-ẵũẵ ùũớũùũù ùộùỗ Ưằ đằơằ ạàớđợ ẵã-ẵũẵ ùũớũợũù ùộùỗ Ưằ đằãă ạàợđù ợùũũ Ưằ đằãă ạàợđợ ợợũũ Ưằ đằãă ạàớđù ớùũũ Ưằ đằãă ạàớđợ ớợũũ -áôơẳâ ãằ ẵ ằăằẵúơãằôơ âđẳ ẵã-ẵ ạạãạ -Đẵáđôạã ãằ ôă ãằ êơĐ ỡ âđẳ ộ ùùùịùờùớùộùỗ ạã ằạơá ãằ êơĐ ùở âđẳ ộ ợùỡịỡùớùĩ ạã 88 Cisco Voice over IP (CVOICE) v4.2 Copyright © 2004, Cisco Systems, Inc ằẳ Copyright â 2004, Cisco Systems, Inc Lab Guide 89 Lab Pull-Out Resource CVOICE Lab Diagram CVOICE v4.211 © 2004 Cisco Systems, Inc All rights reserved IP Address Assignment Pod Number Device Client Ethernet PPP Frame Relay R1 10.1.10.100 10.1.10 10.1.1.1 192.168.1.11 R2 10.1.20.100 10.1.20.1 10.1.1.2 192.168.1.12 R1 10.2.10.100 10.2.10.1 10.2.2.1 192.168.1.21 R2 10.2.20.100 10.2.20.1 10.2.2.2 192.168.1.22 R1 10.3.10.100 10.3.10.1 10.3.3.1 192.168.1.31 R2 10.3.20.100 10.3.20.1 10.3.3.2 192.168.1.32 R1 10.4.10.100 10.4.10.1 10.4.4.1 192.168.1.41 R2 10.4.20.100 10.4.20.1 10.4.4.2 192.168.1.42 90 Cisco Voice over IP (CVOICE) v4.2 Copyright © 2004, Cisco Systems, Inc Host Name Pod Number Router Host Name R1 Pod1R1 R2 Pod1R2 R1 Pod2R1 R2 Pod2R2 R1 Pod3R1 R2 Pod3R2 R1 Pod4R1 R2 Pod4R2 R1 Pod5R1 R2 Pod5R2 R1 Pod6R1 R2 Pod6R2 Dial Plan Conventions As with IP addresses, the dial plan convention allows a student to anticipate the number of any telephone in the classroom The highlights of the strategy include the following points: The classroom uses a four-digit dial plan The first digit identifies the pod number (1 to 6) The second and third digits identify the device (PSTN=00, R1=10, PBX1=15, R2=20, PBX2=25) The fourth digit identifies the telephone Classroom Dial Plan Pod Number 1101 2101 3101 4101 5101 6101 1102 2102 3102 4102 5102 6102 1151 2151 3151 4151 5151 6151 1201 2201 3201 4201 5201 6201 1202 2202 3202 4202 5202 6202 1251 2251 3251 4251 5251 6251 Port 555-1001 555-2001 555-3001 555-4001 555-5001 555-6001 Port 555-1002 555-2002 555-3002 555-4002 555-5002 555-6002 Port 555-1003 555-2003 555-3003 555-4003 555-5003 555-6003 R1 PBX1 R2 PBX2 PSTN Copyright © 2004, Cisco Systems, Inc Lab Guide 91 92 Cisco Voice over IP (CVOICE) v4.2 Copyright © 2004, Cisco Systems, Inc ... 7-199 7 -20 0 7 -20 2 7 -20 4 7 -20 5 7 -20 6 7 -20 8 7 -21 0 7 -21 1 7 -21 4 7 -21 5 7 -21 6 7 -21 7 7 -21 8 7 -22 2 Course Glossary Cisco VoIP Applications Overview Relevance xii Cisco Voice Over IP Copyright © 20 04, Cisco. .. Compared ii 2- 3 2- 3 Cisco Voice Over IP 2- 34 2- 40 2- 43 2- 43 2- 43 2- 43 2- 44 2- 44 2- 45 2- 47 2- 48 2- 49 2- 52 2-56 Copyright © 20 04, Cisco Systems, Inc Compresson Bandwidth Requiremens Voice Quality... Messaging Summary 10 11 12 14 16 17 19 21 22 References xiii Cisco Voice Over IP 23 Copyright © 20 04, Cisco Systems, Inc CVOICE Course Introduction Overview The Cisco Voice over IP (CVOICE) course provides