Cisco TelePresence Fundamentals

Description

Cisco TelePresence Systems (CTS) create live, face-to-face meeting experiences, providing a breakthrough virtual conferencing and collaboration experience that transcends anything previously achievable by videoconferencing. Although the business case for deploying CTS is compelling, implementing it requires advanced knowledge of the latest networking technologies, an attention to detail, and thorough planning. In this book, four leading CTS technical experts cover everything you need to know to successfully design and deploy CTS in your environment.

The authors cover every element of a working CTS solution: video, audio, signaling protocols and call processing, LAN and WAN design, multipoint, security, inter-company connectivity, and much more. They deliver start-to-finish coverage of CTS design for superior availability, QoS support, and security in converged networks. They also present the first chapter-length design guide of it's kind detailing the room requirements and recommendations for lighting, acoustics, and ambience within various types of TelePresence rooms.

Cisco Telepresence Fundamentals is an indispensable resource for all technical professionals tasked with deploying CTS, including netadmins, sysadmins, audio/video specialists, VoIP specialists, and operations staff. This is the only book that:

* Introduces every component of a complete CTS solution and shows how they work together
* Walks through connecting CTS in real-world environments
* Demonstrates how to secure virtual meetings using Cisco firewalls and security protocols
* Includes a full chapter on effective TelePresence room design
* Walks through every aspect of SIP call signaling design, including both single-cluster and intercluster examples for use in a TelePresence environment
* Provides prequalification, room, and network path assessment considerations to help you anticipate and avoid problems

Tim Szigeti, CCIE No. 9794, technical leader within the Cisco Enterprise Systems Engineering team, is responsible for defining Cisco TelePresence network deployment best practices. He also coauthored the Cisco Press book End-to-End QoS Network Design. Kevin McMenamy, senior manager of technical marketing in the Cisco TelePresence Systems Business Unit, has spent the past nine years at Cisco supporting IP videoconferencing, video telephony, and unified communications. Roland Saville, technical leader for the Cisco Enterprise Systems Engineering team, tests and develops best-practice design guides for Cisco TelePresence enterprise deployments. Alan Glowacki is a Cisco technical marketing engineer responsible for supporting Cisco TelePresence customers and sales teams.

* Use Cisco TelePresence Systems (CTS) to enhance global teamwork and collaboration, both within your own enterprise and with your customers, partners, and vendors
* Understand how the various components of the Cisco TelePresence Solution connect and work together
* Integrate CTS into existing LAN, enterprise, and service provider networks
* Successfully design and deploy a global TelePresence network
* Understand the importance of room dimensions, acoustics, lighting, and ambience and how to properly design the physical room environment
* Provide the high levels of network availability CTS requires
* Leverage the Cisco quality of service (QoS) tools most relevant to CTS network provisioning and deployment
* Systematically secure CTS using TLS, dTLS, sRTP, SSH, and Cisco firewalls

This book is part of the Cisco Press Fundamentals Series. Books in this series introduce networking professionals to new networking technologies, covering network topologies, sample deployment concepts, protocols, and management techniques.

Category: IP Communications

Covers: Cisco TelePresence Systems

CONTENTS:

Contents

    Introduction xix

Part I: Introducing Cisco Telepresence 3

Chapter 1 What Is Telepresence? 5

    Evolution of Video Communications 5

    It's All About the Experience! 9

    How Is TelePresence Different Than Video Conferencing? 11

        Quality 12

        Simplicity 13

        Reliability 13

        Bandwidth Requirements 14

Chapter 2 Cisco TelePresence Solution Overview 17

    The Cisco TelePresence Solution 17

    Cisco TelePresence Codec 18

        Industry-Leading Audio and Video 20

        Video Resolution and Compression Formats 21

        Audio Resolution and Compression Formats 23

        Collaboration Tools 24

        Audio and Video Multiplexing 25

    Cisco 7975 Series IP Phone 25

    Cisco TelePresence System 3000 26

        Three Native 1080p High-Definition Cameras 27

        Three 65-Inch High-Definition Plasma Displays 27

        Purpose-Built Meeting Table, Integrated Projector, and
Lighting Shroud 28

        Multichannel Wide-Band Audio 29

    Cisco TelePresence System 3200 29

        Extended Camera Focal View 30

        Second Row Seating 30

        Extension of Each Table Segment 31

        Optional Displays for Shared Content 31

    Cisco TelePresence System 1000 32

        One Native 1080p High-Definition Camera 33

        One 65-Inch High-Definition Plasma Display 33

        Integrated Lighting Shroud 33

        One Wide-band Microphone and Speaker 34

    Cisco TelePresence System 500 34

        One Native 1080p High-Definition Camera 34

        One 37-Inch High-Definition LCD Display 34

        Integrated Lighting Shroud 36

        Integrated Wideband Microphone and Speaker 36

        Multiple Configuration Options 36

    Cisco Unified Communications Manager 36

    Cisco TelePresence Manager 38

        Calendaring Integration and Management 38

        One-Button-to-Push Meeting Access 38

        Resource and Location Management for Cisco TelePresence Multipoint Switch 39

        CTS System Management and Reporting 41

        Concierge Services 41

    Cisco TelePresence Multipoint Switch 42

    Cisco TelePresence Inter-Company 43

    Operation, Administration, and Monitoring 45

    Related TelePresence Services 47

        Cisco TelePresence Planning, Design, and Implementation 47

        Cisco TelePresence Essential Operate Service 49

        Cisco TelePresence Select Operate and TelePresence Remote Assistance Service 49

Part II: Telepresence Technologies 53

Chapter 3 TelePresence Audio and Video Technologies 55

    Codec Design Requirements 55

    Codec System Architecture 56

        Codec Physical Design 56

        Master and Slave Codec Architecture 56

        Codec Operating System Software 59

    Encoding and Packetization 61

        Camera and Auxiliary Video Inputs 62

        Video Encoding 63

        Audio Encoding 68

        Real-Time Transport Protocol 70

        TelePresence Packet Rates 73

    Depacketization and Decoding 77

        Managing Latency, Jitter, and Loss 77

        Summary of Latency, Jitter, Loss Targets and Thresholds,
and Actions 82

        Demultiplexing and Decoding 83

    Audio-Only Participants 87

    Dual-Tone Multi-Frequency 89

        RFC 2833 90

        Key-Pad Markup Language 90

        Other Protocols 90

        How DTMF Tones Are Processed in Cisco TelePresence 91

    Interoperability with Out-of-Band Collaboration Applications 92

    Interoperability with Video Conferencing 92

        Interoperability RTP Channels 93

Chapter 4 Connecting TelePresence Systems 99

    Internal TelePresence System Connections 99

        Connecting a CTS-500 System 99

        Connecting a CTS-1000 System 100

        Connecting a CTS-3000 System 101

        Connecting a CTS-3200 System 104

    TelePresence Network Interaction 106

    TelePresence Network Deployment Models 111

        Intracampus Deployment Model 112

        Intra-Enterprise Deployment Model 112

        Intercompany Deployment Model 114

    TelePresence Phases of Deployment 116

Chapter 5 Network Availability Technologies 121

    Network Availability 121

    Device Availability Technologies 125

        Stackwise/Stackwise Plus 126

        Nonstop Forwarding with Stateful Switchover 128

    Network Availability Protocols 132

        L2 Network Availability Protocols 132

        L3 Network Availability Protocols 147

    Operational Availabilities Technologies 155

        Generic Online Diagnostics 156

Chapter 6 Network Quality of Service Technologies 161

    Modular QoS Command-Line Interface 161

    Classification Tools 162

        Class Maps 162

        Network Based Application Recognition 163

    Marking Tools 165

        Ethernet 802.1Q/p CoS 165

        MPLS EXP 166

        Differentiated Services Code Points 167

    Policing Tools 172

        Single-Rate Policers 173

        Dual-Rate Policers 174

    Shaping Tools 178

    Queuing Tools 181

        CBWFQ 181

        LLQ 183

        Hardware Queuing: 1PxQyT 187

    Dropping Tools 190

        WRED 192

        DSCP-Based WRED 193

        Explicit Congestion Notification 194

    HQoS 196

Chapter 7 TelePresence Control and Security Protocols 203

    Network Control Protocols 203

        IEEE 802.1p/Q: VLAN Tagging and CoS 203

        IEEE 802.1p/Q Utilization Within Cisco TelePresence Networks 205

        IEEE 802.3af: Power over Ethernet 205

        Network Time Protocol (NTP) 206

        Dynamic Host Configuration Protocol (DHCP) 207

    Signaling Protocols 208

        Session Initiation Protocol (SIP) 208

        XML/SOAP 213

        AXL/SOAP 216

        JTAPI, TAPI, and CTIQBE 216

        WebDAV 217

        LDAP 217

    Network Management Protocols 217

        Cisco Discovery Protocol 218

        Trivial File Transfer Protocol (TFTP) 222

        Simple Network Management Protocol 223

    TelePresence Security Protocols 226

        Transport Layer Security (TLS) 226

        Secure Real-Time Transport Protocol (sRTP) 228

        Bandwidth Impact of Enabling TelePresence Encryption 232

        Secure Shell (SSH) 232

        Secure Hypertext Transfer Protocol (HTTPS) 233

Part III: Telepresence System Design 237

Chapter 8 TelePresence Room Design 239

    Room Dimensions, Shape, and Orientation 239

        Width Requirements 240

        Depth Requirements 245

        Height Requirements 249

        Angles, Shape, and Orientation 253

        Doors and Windows 258

    Wall, Floor, and Ceiling Surfaces 259

        Wall Surfaces 259

        Flooring Surfaces 262

        Ceiling Surfaces 263

    Lighting and Illumination 265

        Considering Light Angles and Direction 266

        Considering Light Color Temperature 266

        Measuring Light Intensity 269

        Light Fixture and Bulb Considerations 271

        Light Fixture Ballast Considerations 275

    Acoustics 276

        Measuring Ambient Noise 277

        Measuring Reverberation 279

        Targeted and Maximum Ambient Noise and Reverberation Levels 281

        Controlling Ambient Noise and Reverberation Levels 281

        Scenarios for Mitigating Ambient Noise and Reverberation 283

    HVAC 283

        HVAC Air Noise Diffusion Considerations 289

    Power Requirements 290

    Network Connectivity 294

Chapter 9 TelePresence Network Design Part 1: Availability Design 297

    TelePresence Availability Considerations and Targets 297

    Highly Available Campus Design for TelePresence 299

        Redundancy 300

        Hierarchy 301

        Modularity 303

        Multitier Campus Distribution Block Design 304

        Virtual Switch Campus Distribution Block Design 307

        Routed Access Campus Distribution Block Design 311

    Highly Available Branch Designs for TelePresence 330

        Dual-Tier Branch Profiles 331

        Multitier Branch Profiles 333

Chapter 10 TelePresence Network Design Part 2: Quality of Service Design 339

    TelePresence QoS Considerations 339

        TelePresence Service Level Requirements 339

        TelePresence DiffServ Strategy 349

    Campus QoS Design for TelePresence 356

        Catalyst 3560/3750 QoS Design for TelePresence 359

        Catalyst 4500/4900 QoS Design for TelePresence 366

        Catalyst 6500 QoS Design for TelePresence 374

    Branch QoS Designs for TelePresence 381

        LLQ Versus CBWFQ over the WAN/VPN? 383

        Branch MPLS VPN QoS Considerations and Design 392

Chapter 11 TelePresence Firewall Design 407

    Cisco Firewall Platforms 407

    Firewall Deployment Options 409

        Transparent Versus Routed Mode 409

        Equal Versus Unequal Interface Security Levels 410

        Network Address Translation 411

        Application Layer Protocol Inspection 413

        TLS Proxy Functionality 413

    TelePresence Protocol Requirements 413

        Device Provisioning Flows 414

        Configuration Download and Device Registration Protocols 416

        Call Scheduling and Services Flows 419

        Call Signaling Flows 421

        Media Flows 421

        Management Flows 424

    Example Firewall Configuration 428

Chapter 12 TelePresence Call-Signaling Design 435

    Overview of TelePresence Call-Signaling Components 435

        CUCM: SIP Registrar and Back-to-Back User Agent 435

        CTS Endpoints: SIP User Agents 437

        CTMS: SIP Trunk 437

        Cisco TelePresence SBC and CUBE: B2BUA and Media Proxy 437

    Session Description Protocol 438

        Bandwidth Negotiation 440

        Media Negotiation 440

        Other Negotiated Parameters 441

    CTS Boot Process 441

    Single-Cluster Call Signaling Examples 443

        CTS Endpoint Registration 443

        Call Setup 445

        Call Termination 448

        Call Hold 449

    Intercluster Call Signaling 450

        Single Enterprise Signaling 450

        Business-to-Business Signaling 450

Chapter 13 Multipoint TelePresence Design 455

    CTMS Overview 455

        CTMS Meeting Types 457

        CTMS Meeting Features 459

        Multipoint Resources 462

        Geographical Resource Management 463

        Quality of Service 463

        Meeting Security 464

        Meeting Management 465

    Audio and Video Flows in a Multipoint TelePresence Design 466

        Audio in a Multipoint TelePresence Meeting 466

        Video in a Multipoint TelePresence Meeting 467

    TelePresence Interoperability 469

    Network Design Considerations for Multipoint TelePresence 472

        Deployment Models 472

        Additional Latency 473

        Bandwidth Considerations 475

        Burst Considerations 477

    Positioning of the CTMS Within the Network 481

        Placement Within the Campus 481

        Placement within the Branch 482

        LAN Switch Platform Considerations 482

        WAN Circuit Support 483

    Basic Configuration Requirements for Multipoint TelePresence 484

        CUCM Configuration Requirements 484

        CTMS Configuration Requirements 484

Chapter 14 Inter-Company TelePresence Design 487

    End-to-End Application Requirements 488

        Experience Quality Requirements 488

        Ease of Use Requirements 489

        Reliability Requirements 489

        Security Requirements 489

        Nonproprietary Requirements 490

        Scalability Requirements 490

    Solution Components 490

    Network Architecture and Security 492

        Public E.164 Dialing 494

        Inter-VPN Connectivity 495

        End-to-End Application-Layer Security 510

    Inter-Company Deployment Models 517

        Converged Versus Overlay Access Circuits 518

        Centralized Inter-Company Access Circuit 518

        Multiple, Decentralized Inter-Company Access Circuits 523

        Inter-Company Dialing Models 528

        Scheduling Inter-Company Meetings 531

        Multiple Service Provider Peering 533

Appendix Protocols Used in Cisco TelePresence Solutions 539

TOC, 9781587055935, 5-4-09