Roland Saville Alan Glowacki
Indianapolis, IN 46240
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
The Cisco TelePresence Solution 17
Cisco TelePresence Codec 18
Video Resolution and Compression Formats 21
Audio Resolution and Compression Formats 23
Collaboration Tools 24
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
Second Row Seating 30
Cisco TelePresence System 1000 32
One Native 1080p High-Definition Camera 33
One 65-Inch High-Definition Plasma Display 33
Integrated Lighting Shroud 33
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One Native 1080p High-Definition Camera 34
One 37-Inch High-Definition LCD Display 34
Integrated Lighting Shroud 36
Multiple Configuration Options 36
Cisco TelePresence Manager 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 Inter-Company 43
Related TelePresence Services 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
Codec Operating System Software 59
Encoding and Packetization 61
Video Encoding 63
Audio Encoding 68
Managing Latency, Jitter, and Loss 77
Summary of Latency, Jitter, Loss Targets and Thresholds, and Actions 82
Demultiplexing and Decoding 83
Interoperability with Out-of-Band Collaboration Applications 92
Interoperability with Video Conferencing 92
Interoperability RTP Channels 93
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
Intracampus Deployment Model 112
Intra-Enterprise Deployment Model 112
Intercompany Deployment Model 114
Chapter 5 Network Availability Technologies 121
Network Availability 121
Network Availability Protocols 132
Operational Availabilities Technologies 155
Generic Online Diagnostics 156
Modular QoS Command-Line Interface 161
Classification Tools 162
Class Maps 162
Marking Tools 165
Policing Tools 172
Single-Rate Policers 173
Dual-Rate Policers 174
Shaping Tools 178
Queuing Tools 181
Network Control Protocols 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
XML/SOAP 213
AXL/SOAP 216
WebDAV 217
LDAP 217
Simple Network Management Protocol 223
TelePresence Security Protocols 226
Secure Real-Time Transport Protocol (sRTP) 228
Bandwidth Impact of Enabling TelePresence Encryption 232
Secure Shell (SSH) 232
Width Requirements 240
Depth Requirements 245
Height Requirements 249
Doors and Windows 258
Wall Surfaces 259
Flooring Surfaces 262
Ceiling Surfaces 263
Considering Light Color Temperature 266
Measuring Light Intensity 269
Light Fixture Ballast Considerations 275
Acoustics 276
Controlling Ambient Noise and Reverberation Levels 281
Scenarios for Mitigating Ambient Noise and Reverberation 283
HVAC 283
XV
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
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 DiffServ Strategy 349
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
Equal Versus Unequal Interface Security Levels 410
Network Address Translation 411
TLS Proxy Functionality 413
TelePresence Protocol Requirements 413
Device Provisioning Flows 414
XVI Cisco TelePresence Fundamentals
Call Signaling Flows 421
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
CTS Endpoint Registration 443
CTMS Overview 455
CTMS Meeting Features 459
Audio and Video Flows in a Multipoint TelePresence Design 466
Audio in a Multipoint TelePresence Meeting 466
Video in a Multipoint TelePresence Meeting 467
xvii
Deployment Models 472
Additional Latency 473
Bandwidth Considerations 475
Burst Considerations 477
Placement Within the Campus 481
Placement within the Branch 482
LAN Switch Platform Considerations 482
WAN Circuit Support 483
CUCM Configuration Requirements 484
CTMS Configuration Requirements 484
End-to-End Application Requirements 488
Experience Quality Requirements 488
Reliability Requirements 489
Security Requirements 489
Nonproprietary Requirements 490
Scalability Requirements 490
Solution Components 490
Public E.164 Dialing 494
Centralized Inter-Company Access Circuit 518
Multiple, Decentralized Inter-Company Access Circuits 523
Inter-Company Dialing Models 528
Scheduling Inter-Company Meetings 531
Appendix Protocols Used in Cisco TelePresence Solutions 539
Index 552