cisco collaboration 9.x solution reference network designs

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Cisco Collaboration 9.x Solution Reference Network Designs (SRND)

August 23, 2013

Text Part Number: OL-29367-04

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Cisco Collaboration 9.x SRND 2012-2013 Cisco Systems, Inc. All rights reserved.

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LAN Infrastructure 3-4LAN Design for High

Campus AccessRouted Access Campus Distrib Availability 3-4C O N T E N T S

Preface xxxvii

New or Changed Information for This Release xxxviii

Revision History xxxviii

Obtaining Documentation and Submitting a Service Request xxxix

Cisco Product Security Overview xxxix

Conventions xxxix

C H A P T E R 1 Introduction 1-1

What's New in This Chapter 1-1

Cisco End-to-End Collaboration Solutions 1-1Collaboration Infrastructure 1-2Collaboration Applications and Services 1-3The Collaboration User Experience 1-3

About this Document 1-4How to Use this Document 1-5

For Experienced Users of this Document 1-5For New Users of This Document 1-5

Where to Find Additional Information 1-8

P A R T 1 Collaboration System Components and Architecture

C H A P T E R 2 Overview of Cisco Collaboration System Components and Architecture 2-1

Architecture 2-3

High Availability 2-3

Capacity Planning 2-4

C H A P T E R 3 Network Infrastructure 3-1

What's New in This Chapter 3-4iiiCisco Collaboration 9.x SRND

Layer 3-5Layer Designs 3-7ution Layer 3-10

Contents

Campus Core Layer 3-12Power over Ethernet (PoE) 3-13Energy Conservation for IP Phones 3-13

LAN Quality of Service (QoS) 3-15Traffic Classification 3-16Interface Queuing 3-18Bandwidth Provisioning 3-19Impairments to IP Communications if QoS is Not Employed 3-19

QoS Design Considerations for Virtual Unified Communications with Cisco UCS Servers 3-19Standard Switching Element QoS Behavior 3-20Congestion Scenario 3-21Design Recommendations 3-21

QoS Design Considerations for Video 3-22Network Services 3-23

Domain Name System (DNS) 3-23Dynamic Host Configuration Protocol (DHCP) 3-24Trivial File Transfer Protocol (TFTP) 3-28Network Time Protocol (NTP) 3-33

WAN Infrastructure 3-34WAN Design and Configuration 3-34

Deployment Considerations 3-34Guaranteed Bandwidth 3-36Dynamic Multipoint VPN (DMVPN) 3-36Best-Effort Bandwidth 3-36

WAN Quality of Service (QoS) 3-37Traffic Prioritization 3-39Scavenger Class 3-40Link Efficiency Techniques 3-40Traffic Shaping 3-42

Bandwidth Provisioning 3-45Provisioning for Bearer Traffic 3-46Provisioning for Call Control Traffic 3-49

Wireless LAN Infrastructure 3-54Architecture for Voice and Video over WLAN 3-54

Wireless Access Points 3-55Wireless LAN Controllers 3-56Authentication Database 3-56Supporting Wired Network 3-56Wireless Unified Communications Endpoints 3-57ivCisco Collaboration 9.x SRND

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Wired Call Elements 3-57

Contents

Call Control 3-57Media Termination 3-57

High Availability for Voice and Video over WLAN 3-58Supporting Wired Network High Availability 3-58WLAN High Availability 3-58Call Processing High Availability 3-60

Capacity Planning for Voice and Video over WLAN 3-60Design Considerations for Voice and Video over WLAN 3-60

Wireless AP Configuration and Design 3-64Wireless LAN Controller Design Considerations 3-65

WLAN Quality of Service (QoS) 3-66Traffic Classification 3-67User Priority Mapping 3-67Interface Queuing 3-68Wireless Call Admission Control 3-68

Service Advertisement Framework (SAF) 3-69Services that SAF Can Advertise 3-69SAF Networks 3-70

SAF Forwarders, SAF Clients, and non-SAF Networks 3-70SAF Autonomous Systems 3-75

Cisco Medianet 3-77Media Monitoring 3-79

Performance Monitor 3-79Mediatrace 3-81IP SLA Video Operation 3-83Media Monitoring Deployment Recommendations 3-85

Media Awareness 3-86Media Services Interface (MSI) 3-86Media Services Proxy 3-87Flow Metadata 3-87

C H A P T E R 4 Cisco Collaboration Security 4-1


General Security 4-2Security Policy 4-2Security in Layers 4-4Secure Infrastructure 4-5Physical Security 4-5vCisco Collaboration 9.x SRND

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IP Addressing 4-5

Contents

IPv6 Addressing 4-6

Access Security 4-6Voice and Video VLANs 4-6Switch Port 4-7

Port Security: MAC CAM Flooding 4-8Port Security: Gratuitous ARP 4-9Port Security: Prevent Port Access 4-10Port Security: Prevent Rogue Network Extensions 4-10DHCP Snooping: Prevent Rogue DHCP Server Attacks 4-11DHCP Snooping: Prevent DHCP Starvation Attacks 4-12DHCP Snooping: Binding Information 4-13Requirement for Dynamic ARP Inspection 4-13802.1X Port-Based Authentication 4-15

Endpoint Security 4-16PC Port on the Phone 4-16PC Voice VLAN Access 4-17Web Access Through the Phone 4-18Settings Access 4-18Cisco TelePresence Endpoint Hardening 4-19Authentication and Encryption 4-19VPN Client for IP Phones 4-21Quality of Service 4-21

Access Control Lists 4-22VLAN Access Control Lists 4-22Router Access Control Lists 4-22

Firewalls 4-23Routed ASA 4-25Transparent ASA 4-26ASA Intercompany Media Engine Proxy 4-26

Basic Deployment 4-27Offpath Deployment 4-27Mid-Call PSTN Fallback 4-28Design Considerations 4-29High Availability 4-30

Network Address Translation for Voice and Video 4-30

Data Center 4-31

Gateways, Trunks, and Media Resources 4-31Putting Firewalls Around Gateways 4-32viCisco Collaboration 9.x SRND

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Firewalls and H.323 4-33

Contents

SAF Service 4-34Secure Audio and Video Conferencing 4-34Unified CM Trunk Integration with Cisco Unified Border Element 4-35

Cisco TelePresence Video Communication Server (VCS) 4-36VCS Expressway in a DMZ 4-37

Applications Servers 4-38Single Sign-On 4-38SELinux on the Unified CM and Application Servers 4-39General Server Guidelines 4-39

Deployment Examples 4-40Lobby Phone Example 4-40Firewall Deployment Example (Centralized Deployment) 4-41

Securing Network Virtualization 4-42Scenario 1: Single Data Center 4-43Scenario 2: Redundant Data Centers 4-44

Conclusion 4-46

C H A P T E R 5 Gateways 5-1


Understanding Cisco Gateways 5-2TDM and IP Trunking Gateways 5-2Cisco Analog Gateways 5-2Cisco Digital Trunk Gateways 5-3Cisco TelePresence ISDN Link 5-3

Gateway Selection 5-3Core Feature Requirements 5-3Gateway Protocols for Call Control 5-4Core Feature Requirements 5-6

DTMF Relay 5-6Supplementary Services 5-7Unified CM Redundancy 5-10

Gateways for Video Telephony 5-12Dedicated Video Gateways 5-12Integrated Video Gateways 5-14Configuring the Gateways in Unified CM 5-14

Call Signaling Timers 5-14Bearer Capabilities of Cisco IOS Voice Gateways 5-15

Gateways Best Practices 5-15viiCisco Collaboration 9.x SRND

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Contents

Tuning Gateway Gain Settings 5-15Routing Inbound Calls from the PSTN 5-16Routing Outbound Calls to the PSTN 5-17Automated Alternate Routing (AAR) 5-18Least-Cost Routing 5-20

Fax and Modem Support 5-21

C H A P T E R 6 Cisco Unified CM Trunks 6-1


Unified CM Trunks Solution Architecture 6-2

A Comparison of SIP and H.323 Trunks 6-3

SIP Trunks Overview 6-6General Deployment Considerations 6-7SIP Trunk Features and Operation 6-7

SIP Trunks Can Run on All Active Unified CM Nodes 6-7Up to 16 SIP Trunk Destination IP Addresses 6-7SIP OPTIONS Ping 6-8SIP Early Offer Support over Unified CM SIP Trunks 6-8QSIG over SIP Trunks 6-11SIP Trunk Message Normalization and Transparency 6-12Route Lists Run on All Active Unified CM Nodes 6-16SIP Trunks Using DNS 6-17

High Availability for SIP Trunks 6-19Multiple Source Unified CM Servers for Originating SIP Trunk Calls 6-19Multiple Destination IP Addresses per SIP Trunk 6-20Design Considerations When Using Run on All Active Unified CM Nodes 6-20Multiple SIP Trunks Using Route Lists and Route Groups 6-20SIP OPTIONS Ping 6-20

Load Balancing for SIP Trunks 6-20Outbound Calls over a Single SIP Trunk 6-21Outbound Calls over Multiple SIP Trunks 6-21SIP OPTIONS Ping 6-21

SIP Delayed Offer and Early Offer 6-21Media Termination Points 6-23DTMF Transport 6-24SIP Trunk Transport Protocols 6-25Secure SIP Trunks 6-26

Media Encryption 6-26viiiCisco Collaboration 9.x SRND

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Signaling Encryption 6-26

Contents

Calling Party Number Transformation and SIP Trunks 6-27SIP Trunk Service Types 6-28Design Considerations for SIP Trunks 6-29

Considerations for SIP Intercluster Trunks 6-29Using Standard Unified CM Groups with SIP Intercluster Trunks 6-29Using Run on All Active Unified CM Nodes with SIP Intercluster Trunks 6-30Using Standard Unified CM Groups and Run on All Active Unified CM Nodes with SIP Intercluster Trunks 6-31

Trunk Type and Feature Recommendations for Multi-Cluster Deployments 6-33Multiple Clusters All Running Unified CM 8.5 or Later Releases 6-33Multiple Clusters Running Unified CM 8.5 and Prior Releases 6-34

Trunk Design Considerations for Clustering over the WAN 6-35Design Guidance for Clustering over the WAN with Leaf Cluster Trunks 6-36Design Guidance for Clustering over the WAN with Unified CM Session Management Edition Cluster Trunks 6-37

Other SIP Trunk Deployment Considerations 6-38

H.323 Trunks Overview 6-38General H.323 Intercluster Trunk Deployment Considerations 6-38Basic Operation of H.323 Trunks 6-39H.323 Trunk Types 6-39

Intercluster Trunk (Non-Gatekeeper Controlled) 6-39Intercluster Trunk (Gatekeeper Controlled) 6-46H.225 Trunk (Gatekeeper Controlled) 6-47High Availability for Gatekeeper Controlled Trunks 6-47Load Balancing Outbound Calls over H.323 Gatekeeper Controlled Trunks 6-50H.323 Outbound Fast Start Call Connections 6-51H.323 Trunks with Media Termination Points 6-52DTMF Transport 6-52H.323 Trunk Transport Protocols 6-52Secure H.323 Trunks 6-52

H.323 Operation in Unified CM 6-53Other Design Considerations for H.323 Trunks 6-57

General SIP and H.323 Trunk Design Considerations 6-57Deterministic Outbound Call Load Balancing over Unified CM Trunks 6-57Codec Selection Over IP Trunks 6-58

Accept Audio Codec Preferences in Received Offer 6-60Cisco Unified CM and Cisco Unified Border Element SIP Trunk Codec Preference 6-61

Other MTP Uses 6-62

Cisco Unified CM Trunks and Emergency Services 6-62ixCisco Collaboration 9.x SRND

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Capacity Planning for Unified CM IP Trunks 6-63

Contents

Interconnecting Unified CM and Cisco VCS 6-63

IP PSTN and IP Trunks to Service Provider Networks 6-64

Cisco Unified Border Element 6-65

Trunk Aggregation Platforms 6-65Unified CM Session Management Edition 6-65Cisco Unified SIP Proxy 6-67

Trunk IP-PSTN Connection Models 6-68

C H A P T E R 7 Media Resources 7-1


Media Resources Architecture 7-2Media Resource Manager 7-2Cisco IP Voice Media Streaming Application 7-4Voice Termination 7-4

Medium and High Complexity Mode 7-5Flex Mode 7-5

Transcoding 7-6Audio Transcoding Resources 7-7Video Interoperability 7-8

Media Termination Point (MTP) 7-8Re-Packetization of a Stream 7-9DTMF Conversion 7-9DTMF Relay Between Endpoints 7-9DTMF Relay over SIP Trunks 7-10

SIP Trunk MTP Requirements 7-11DTMF Relay on SIP Gateways and Cisco Unified Border Element 7-12

H.323 Trunks and Gateways 7-13H.323 Supplementary Services 7-13H.323 Outbound Fast Connect 7-13DTMF Conversion 7-13DTMF Relay on H.323 Gateways and Cisco Unified Border Element 7-14

CTI Route Points 7-14MTP Usage with a Conference Bridge 7-15MTP Resources 7-15

Trusted Relay Point 7-16

Annunciator 7-16

Cisco RSVP Agent 7-17xCisco Collaboration 9.x SRND

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Music on Hold 7-18

Contents

Unicast and Multicast MoH 7-18MoH Selection Process 7-19User and Network Hold 7-20MoH Sources 7-22

Audio File 7-22Fixed Source 7-22

MoH Selection 7-23MoH Call Flows 7-23

SCCP Call Flows 7-23SIP Call Flows 7-26

Capacity Planning for Media Resources 7-30Considerations for Cisco 2900 and 3900 Series Platforms 7-31Cisco 2800 and 3800 Series Platforms 7-31

Capacity Planning for Music on Hold 7-32Co-resident and Standalone MoH 7-32Server Platform Limits 7-32Resource Provisioning 7-34

High Availability for Media Resources 7-34Media Resource Groups and Lists 7-34Redundancy and Failover Considerations for Cisco IOS-Based Media Resources 7-36High Availability for Transcoders 7-36High Availability for Music on Hold 7-36

Design Considerations for Media Resources 7-37Deployment Models 7-37

Single-Site Deployments 7-37Multisite Deployments with Centralized Call Processing 7-37Multisite Deployments with Distributed Call Processing 7-38

Media Functions and Voice Quality 7-39Music on Hold Design Considerations 7-40

Codec Selection 7-40Multicast Addressing 7-40MoH Audio Sources 7-41Using Multiple Fixed (Live) Audio Sources 7-41Unicast and Multicast in the Same Unified CM Cluster 7-42Quality of Service (QoS) 7-43Call Admission Control and MoH 7-43

Deployment Models for Music on Hold 7-45Single-Site Campus (Relevant to All Deployments) 7-45xiCisco Collaboration 9.x SRND

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Centralized Multisite Deployments 7-45

Contents

Distributed Multisite Deployments 7-48Clustering Over the WAN 7-49

C H A P T E R 8 Collaboration Endpoints 8-1


Collaboration Endpoints Architecture 8-3Cisco Unified Communications Manager (Unified CM) Call Control 8-4Cisco TelePresence Video Communication Server (VCS) Call Control 8-5Collaboration Endpoint Section 508 Conformance 8-5

Analog Endpoints 8-6Standalone Analog Gateways 8-6Analog Interface Module 8-7Deployment Considerations for Analog Endpoints 8-7

Analog Connection Types 8-7Paging Systems 8-8Quality of Service 8-8

Desk Phones 8-8Cisco Unified IP Phone 7900 Series 8-8Cisco Unified IP Phone 6900 Series 8-9Cisco Unified IP Phone 8800 Series 8-10Cisco Unified IP Phone 8900 and 9900 Series 8-10Cisco Unified SIP Phone 3900 Series 8-11Cisco Desktop Collaboration Experience DX600 Series 8-11Deployment Considerations for Cisco Desk Phones 8-12

Firmware Upgrades 8-12Power Over Ethernet 8-13Quality of Service 8-13SRST and Unified CME as SRST 8-13

Video Endpoints 8-14Personal Video Endpoints 8-14

Cisco Jabber Desktop Video 8-14Cisco Jabber Video for TelePresence 8-14Cisco Unified IP Phone 8900 and 9900 Series 8-15Cisco Desktop Collaboration Experience DX600 Series 8-15Cisco TelePresence System EX Series 8-15Cisco TelePresence System 500 and 1100 8-16

Multipurpose Video Endpoints 8-16Cisco TelePresence System MX Series 8-16xiiCisco Collaboration 9.x SRND

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Cisco TelePresence SX20 Quick Sets 8-17

Contents

Cisco Telepresence System Integrator C Series 8-17Immersive Video Endpoints 8-17

Cisco TelePresence TX9000 Series 8-17Cisco TelePresence TX1300 Series 8-18

General Deployment Considerations for Video Endpoints 8-18Quality of Service 8-18Inter-VLAN Routing 8-19SRST and Unified CME as SRST 8-19Video Interoperability 8-19

Software-Based Endpoints 8-22Cisco IP Communicator 8-22Cisco Jabber Desktop Clients 8-22

Softphone Mode of Operation 8-22Deskphone Control Mode of Operation 8-23

General Deployment Considerations for Software-Based Endpoints 8-23Quality of Service 8-23Inter-VLAN Routing 8-24SRST and Unified CME as SRST 8-24

Wireless Endpoints 8-25General Deployment Considerations for Wireless Endpoints 8-25

Network Radio Frequency Design and Site Survey 8-25Security: Authentication and Encryption 8-26Wireless Call Capacity 8-26Bluetooth Support 8-27Quality of Service 8-27SRST and Unified CME as SRST 8-27Device Mobility 8-28

Mobile Endpoints 8-28Cisco Jabber for Android and Apple iOS 8-28Cisco Jabber IM 8-29Cisco WebEx Meetings 8-29Cisco AnyConnect Secure Mobility Client 8-29Deployment Considerations for Mobile Endpoints and Clients 8-30

WLAN Design 8-30Secure Remote Enterprise Attachment 8-30Quality of Service 8-30SRST and Unified CME as SRST 8-31

Cisco Virtualization Experience Clients 8-31xiiiCisco Collaboration 9.x SRND

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Cisco Virtualization Experience Client 2000 Series 8-32

Contents

Cisco Virtualization Experience Client 4000 Series 8-32Cisco Virtualization Experience Client 6000 Series 8-32Deployment Considerations for Cisco Virtualization Experience Clients 8-32

Cisco Virtualization Experience Client Manager 8-33Power over Ethernet 8-33Quality of Service 8-33SRST and Unified CME as SRST 8-34

Third-Party IP Phones 8-34

High Availability for Collaboration Endpoints 8-35Cisco Unified CM Call Control High Availability 8-35Cisco TelePresence VCS Call Control High Availability 8-35

Capacity Planning for Collaboration Endpoints 8-37

Design Considerations for Collaboration Endpoints 8-37

C H A P T E R 9 Call Processing 9-1


Call Processing Architecture 9-2Call Processing Hardware 9-4Unified CM Cluster Services 9-6

Cluster Server Nodes 9-6Enterprise License Manager 9-9Intracluster Communications 9-11Intracluster Security 9-13General Clustering Guidelines 9-14

Cisco TelePresence VCS Clustering 9-15

High Availability for Call Processing 9-16Hardware Platform High Availability 9-16Network Connectivity High Availability 9-16Unified CM High Availability 9-18

Call Processing Redundancy 9-18Call Processing Subscriber Redundancy 9-20TFTP Redundancy 9-24CTI Manager Redundancy 9-24Virtualized Call Processing Redundancy 9-25

Cisco Business Edition High Availability 9-26Cisco TelePresence VCS High Availability 9-26

Capacity Planning for Call Processing 9-28Unified CME Capacity Planning 9-28xivCisco Collaboration 9.x SRND

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Unified CM Capacity Planning 9-28

Contents

Unified CM Capacity Planning with Virtualized Platforms 9-29Unified CM Capacity Planning Guidelines and Endpoint Limits 9-29Megacluster 9-30

Cisco Business Edition Capacity Planning 9-31Cisco TelePresence VCS Capacity Planning 9-31

Design Considerations for Call Processing 9-32

Computer Telephony Integration (CTI) 9-34CTI Architecture 9-35CTI Applications and Clustering Over the WAN 9-37Capacity Planning for CTI 9-38High Availability for CTI 9-38

CTI Manager 9-38Redundancy, Failover, and Load Balancing 9-38

Implementation 9-41

Interoperability of Unified CM and Unified CM Express 9-42Overview of Interoperability Between Unified CM and Unified CME 9-42

Call Types and Call Flows 9-42Music on Hold 9-43Ad Hoc and Meet Me Hardware Conferencing 9-43

Unified CM and Unified CME Interoperability via SIP in a Multisite Deployment with Distributed Call Processing 9-44

Best Practices 9-44Design Considerations 9-45

Unified CM and Unified CME Interoperability via H.323 in a Multisite Deployment with Distributed Call Processing 9-47

Best Practices 9-48Design Considerations 9-49

Interoperability of Cisco TelePresence VCS with Unified CM 9-51Dial Plan Integration 9-53Design Considerations 9-53

C H A P T E R 10 Collaboration Deployment Models 10-1


Deploying Unified Communications and Collaboration 10-2

Deployment Model Architecture 10-3Summary of Unified Communications Deployment Models 10-3High Availability for Deployment Models 10-4Capacity Planning for Deployment Models 10-4xvCisco Collaboration 9.x SRND

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Common Design Criteria 10-5

Contents

Site-Based Design Guidance 10-6Centralized Services 10-6Distributed Services 10-7Inter-Networking of Services 10-8Geographical Diversity of Unified Communications Services 10-8

Campus 10-9Best Practices for the Campus Model 10-10

Multisite with Centralized Call Processing 10-10Best Practices for the Centralized Call Processing Model 10-14Remote Site Survivability 10-14

Unified CME in SRST Mode 10-17Best Practices for Unified CME in SRST Mode 10-18Best Practices for SRST Router 10-18Cisco Unified Survivable Remote Site Telephony Manager 10-19

Voice Over the PSTN as a Variant of Centralized Call Processing 10-20

Multisite with Distributed Call Processing 10-21Best Practices for the Distributed Call Processing Model 10-23

Dial Plan Aggregation Platforms for Distributed Call Processing Deployments 10-23Leaf Unified Communications Systems for the Distributed Call Processing Model 10-23Unified CM Session Management Edition 10-24

When to Deploy Unified CM Session Management Edition 10-25Differences Between Unified CM Session Management Edition and Standard Unified CM Clusters 10-26

Design Considerations for Dual Call Control Deployments 10-28Call Admission Control Considerations in Dual Call Control Deployments 10-29

Multisite Centralized Unified CM Deployments with Distributed Third-Party Call Control 10-29Multisite Centralized Unified CM Deployments with Centralized Third-Party Call Control 10-29

Dial Plan Considerations in Dual Call Control Deployments 10-30

Clustering Over the IP WAN 10-30WAN Considerations 10-31Intra-Cluster Communications 10-32

Unified CM Publisher 10-33Call Detail Records (CDR) and Call Management Records (CMR) 10-33Delay Testing 10-33Error Rate 10-34Troubleshooting 10-34

Local Failover Deployment Model 10-35Unified CM Provisioning for Local Failover 10-39xviCisco Collaboration 9.x SRND

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Gateways for Local Failover 10-40

Contents

Voicemail for Local Failover 10-40Music on Hold and Media Resources for Local Failover 10-40

Remote Failover Deployment Model 10-41Cisco Business Edition 6000 Clustering over the WAN 10-42

Deploying Unified Communications on Virtualized Servers 10-44Cisco Unified Computing System 10-44Cisco UCS B-Series Blade Servers 10-45

Cisco UCS 5100 Series Blade Server Chassis 10-45Cisco UCS 2100 and 2200 Series Fabric Extenders 10-46Cisco UCS 6100 and 6200 Series Fabric Interconnect Switch 10-46Cisco UCS Manager 10-46Hypervisor 10-46Storage Area Networking 10-46

Design Considerations for Running Virtual Unified Communications Applications on B-Series Blade Servers 10-46

Blade Server 10-47Hypervisor 10-47SAN and Storage Arrays 10-47

Cisco UCS C-Series Rack-Mount Servers 10-47Design Considerations for Running Virtual Unified Communications Applications on C-Series Rack-Mount Servers 10-48Impact of Virtual Servers on Deployment Models 10-48

Call Routing and Dial Plan Distribution Using Call Control Discovery (CCD) for the Service Advertisement Framework (SAF) 10-49

Services that SAF Can Advertise 10-49SAF CCD Deployment Considerations 10-50

Cisco Intercompany Media Engine 10-50

C H A P T E R 11 Cisco Rich Media Conferencing 11-1


Types of Conferences 11-2

Cisco Rich Media Conferencing Architecture 11-3Audio Conferencing 11-3

Ad-Hoc Audio Conference 11-4Meet-Me Audio Conference 11-4Scheduled Audio Conference 11-5Security in Audio Conferences 11-5

Video Conferencing 11-6Meeting Experience 11-6xviiCisco Collaboration 9.x SRND

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Contents

Ad-Hoc Video Conferences 11-8Rendezvous Video Conferences 11-10Scheduled Video Conferences 11-11Security in Video Conferences 11-14

Conferencing Resources 11-14Audio Conferencing Resources 11-14Video Conferencing Resources 11-16

High Availability for Cisco Rich Media Conferencing 11-22Media Resource Groups and Lists 11-22Route List and Route Groups 11-23Cisco VCS Conferencing Redundancy 11-23Redundancy with Cisco TelePresence Conductor 11-23

Capacity Planning for Cisco Rich Media Conferencing 11-27Sizing the Conferencing Resources 11-27

Resource Allocation and Allocation Logic 11-27Scalability 11-29

Design Considerations for Cisco Rich Media Conferencing 11-32Cisco Rich Media Conferencing Deployment Models 11-32

Cisco Hosted Solutions 11-32Multiple Sites with Centralized Resources 11-32Multiple Sites with Distributed Resources 11-33

Design Recommendations 11-34Latency 11-34Cascading 11-34MTP Used with a Conference Bridge 11-35Video Transcoding and Video Switching 11-35Cisco Business Edition 11-36

P A R T 2 Call Control and Routing

C H A P T E R 12 Overview of Call Control and Routing 12-1

Architecture 12-2



C H A P T E R 13 Call Admission Control 13-1


Call Admission Control Architecture 13-3xviiiCisco Collaboration 9.x SRND

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Contents

Cisco IOS Gatekeeper Zones 13-3Unified Communications Architectures Using Resource Reservation Protocol (RSVP) 13-3Unified CM Enhanced Location Call Admission Control 13-4

Network Modeling with Locations, Links, and Weights 13-4Location Bandwidth Manager 13-12Enhanced Location CAC Design and Deployment Recommendations and Considerations 13-14

Intercluster Enhanced Location CAC 13-14LBM Hub Replication Network 13-15Common Locations (Shared Locations) and Links 13-17Shadow Location 13-19Location and Link Management Cluster 13-20Intercluster Enhanced Location CAC Design and Deployment Recommendations and Considerations 13-23

Enhanced Location CAC for TelePresence Immersive Video 13-24Video Call Traffic Class 13-24Endpoint Classification 13-24SIP Trunks 13-25

Examples of Various Call Flows and Location and Link Bandwidth Pool Deductions 13-27Video Bandwidth Utilization and Admission Control 13-30Upgrade and Migration from Location CAC to Enhanced Location CAC 13-35

Design Considerations for Call Admission Control 13-37Dual Data Center Design 13-37MPLS Clouds 13-38

Call Admission Control Design Recommendations for TelePresence Video Interoperability Architectures 13-42

Supported CAC Deployment Scenarios and Design Considerations 13-42Enhanced Location CAC Design Considerations and Recommendations 13-43

Design Recommendations 13-43Design Considerations 13-44

Design Recommendations for Unified CM Session Management Edition Deployments with Enhanced Location CAC 13-45

Recommendations and Design Considerations 13-45

C H A P T E R 14 Dial Plan 14-1


Dial Plan Fundamentals 14-3Endpoint Addressing 14-3

Numeric Addresses (Numbers) 14-3Alphanumeric Addresses 14-5xixCisco Collaboration 9.x SRND

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Dialing Habits 14-6

Contents

Dialing Domains 14-6Classes of Service 14-7Call Routing 14-8

Identification of Dialing Habit and Avoiding Overlaps 14-8Forced On-Net Routing 14-9Single Call Control Call Routing 14-10Multiple Call Control Call Routing 14-11

Dial Plan Elements 14-13Cisco Unified Communications Manager 14-13

User Interface on IP Phones 14-13Calling Party Transformations on IP Phones 14-13Support for + Dialing on the Phones 14-14User Input on SCCP Phones 14-15User Input on Type-A SIP Phones 14-15User Input on Type-B SIP Phones 14-17SIP Dial Rules 14-19Call Routing in Unified CM 14-21Support for + Sign in Patterns 14-23Directory URIs 14-23Translation Patterns 14-24External Routes in Unified CM 14-24Pattern Urgency 14-33Calling and Called Party Transformation Patterns 14-35Incoming Calling Party Settings (per Gateway or Trunk) 14-37Incoming Called Party Settings (per Gateway or Trunk) 14-37Calling Privileges in Unified CM 14-37Routing of SIP Requests in Unified CM 14-44

Cisco TelePresence Video Communication Server 14-47Cisco VCS Addressing Schemes: SIP URI, H.323 ID, and E.164 Alias 14-47Cisco VCS Addressing Zones 14-48Cisco VCS Pattern Matching 14-48Cisco VCS Routing Process 14-49

Recommended Design 14-50Globalized Dial Plan Approach on Unified CM 14-50

Local Route Group 14-51Support for + Dialing 14-51Calling Party Number Transformations 14-51Called Party Number Transformations 14-52Incoming Calling Party Settings (per Gateway) 14-52xxCisco Collaboration 9.x SRND

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Logical Partitioning 14-53

Contents

Localized Call Ingress 14-54Globalized Call Routing 14-56Localized Call Egress 14-56Call Routing in a Globalized Dial Plan 14-58Benefits of the Design Approach 14-66

Integrating Unified Communications Manager and TelePresence Video Communication Server 14-68

+E.164 Numbering Plan 14-69Alias Normalization and Manipulation 14-69Implementing Endpoint SIP URIs 14-72

Special Considerations 14-73Automated Alternate Routing 14-73

Establish the PSTN Number of the Destination 14-73Prefix the Required Access Codes 14-74Voicemail Considerations 14-75Select the Proper Dial Plan and Route 14-76

Device Mobility 14-77Extension Mobility 14-78Special Considerations for Cisco Unified Mobility 14-80

Remote Destination Profile 14-81Remote Destination Profile's Rerouting Calling Search Space 14-81Remote Destination Profile's Calling Search Space 14-81Remote Destination Profile's Calling Party Transformation CSS and Transformation Patterns 14-82Application Dial Rules 14-83

Time-of-Day Routing 14-84Logical Partitioning 14-85

Logical Partitioning Device Types 14-86Geolocation Creation 14-86Geolocation Assignment 14-87Geolocation Filter Creation 14-87Geolocation Filter Assignment 14-87Logical Partitioning Policy Configuration 14-87Logical Partitioning Policy Application 14-88

C H A P T E R 15 Emergency Services 15-1


911 Emergency Services Architecture 15-2Public Safety Answering Point (PSAP) 15-2xxiCisco Collaboration 9.x SRND

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Selective Router 15-3

Contents

Automatic Location Identifier Database 15-3Private Switch ALI 15-3911 Network Service Provider 15-3Interface Points into the Appropriate 911 Networks 15-4Interface Type 15-5

Dynamic ANI (Trunk Connection) 15-5Static ANI (Line Connection) 15-7

Cisco Emergency Responder 15-7

High Availability for Emergency Services 15-9

Capacity Planning for Cisco Emergency Responder Clustering 15-9

Design Considerations for 911 Emergency Services 15-10Emergency Response Location Mapping 15-10Emergency Location Identification Number Mapping 15-11Dial Plan Considerations 15-12Gateway Considerations 15-13

Gateway Placement 15-13Gateway Blocking 15-14Answer Supervision 15-14

Cisco Emergency Responder Design Considerations 15-15Device Mobility Across Call Admission Control Locations 15-15Default Emergency Response Location 15-15Cisco Emergency Responder and Extension Mobility 15-15Cisco Emergency Responder and Video 15-16Soft Clients 15-16Test Calls 15-17PSAP Callback to Shared Directory Numbers 15-17

Cisco Emergency Responder Deployment Models 15-18Single Cisco Emergency Responder Group 15-18Multiple Cisco Emergency Responder Groups 15-20Emergency Call Routing within a Cisco Emergency Responder Cluster 15-22WAN Deployment of Cisco Emergency Responder 15-23

ALI Formats 15-23

C H A P T E R 16 LDAP Directory Integration 16-1


What is Directory Integration? 16-2

Directory Access for Unified Communications Endpoints 16-3

Directory Integration with Unified CM 16-5xxiiCisco Collaboration 9.x SRND

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Contents

Cisco Unified Communications Directory Architecture 16-6LDAP Synchronization 16-9

Synchronization Mechanism 16-13Security Considerations 16-15Design Considerations for LDAP Synchronization 16-15Additional Considerations for Microsoft Active Directory 16-16Unified CM Multi-Forest LDAP Synchronization 16-18

LDAP Authentication 16-18Design Considerations for LDAP Authentication 16-20Additional Considerations for Microsoft Active Directory 16-21

User Filtering for Directory Synchronization and Authentication 16-23Optimizing Unified CM Database Synchronization 16-23Using the LDAP Structure to Control Synchronization 16-24LDAP Query 16-24LDAP Query Filter Syntax and Server-Side Filtering 16-24High Availability 16-26Capacity Planning for Unified CM Database Synchronization 16-27

Directory Integration for VCS Registered Endpoints 16-28

P A R T 3 Collaboration Clients and Applications

C H A P T E R 17 Overview of Collaboration Clients and Applications 17-1

Architecture 17-2



C H A P T E R 18 Cisco Unified CM Applications 18-1


IP Phone Services 18-2IP Phone Services Architecture 18-3High Availability for IP Phone Services 18-6Capacity Planning for IP Phone Services 18-7Design Considerations for IP Phone Services 18-8

Extension Mobility 18-8Unified CM Services for Extension Mobility 18-8Extension Mobility Architecture 18-9Extension Mobility Cross Cluster (EMCC) 18-10

Call Processing 18-11xxiiiCisco Collaboration 9.x SRND

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Media Resources 18-14

Contents

Extension Mobility Security 18-14Support for Phones in Secure Mode 18-15High Availability for Extension Mobility 18-16Capacity Planning for Extension Mobility 18-18Design Considerations for Extension Mobility 18-19Design Considerations for Extension Mobility Cross Cluster (EMCC) 18-19

Unified CM Assistant 18-20Unified CM Assistant Architecture 18-21

Unified CM Assistant Proxy Line Mode 18-21Unified CM Assistant Share Lined Mode 18-22Unified CM Assistant Architecture 18-22

High Availability for Unified CM Assistant 18-24Service and Component Redundancy 18-25Device and Reachability Redundancy 18-26

Capacity Planning for Unified CM Assistant 18-27Design Considerations for Unified CM Assistant 18-29

Unified CM Assistant Extension Mobility Considerations 18-29Unified CM Assistant Dial Plan Considerations 18-29

Unified CM Assistant Console 18-33Unified CM Assistant Console Installation 18-33Unified CM Assistant Desktop Console QoS 18-33Unified CM Assistant Console Directory Window 18-33Unified CM Assistant Phone Console QoS 18-34

WebDialer 18-34WebDialer Architecture 18-35

WebDialer Servlet 18-35Redirector Servlet 18-36WebDialer Architecture 18-38WebDialer URLs 18-39

High Availability for WebDialer 18-40Service and Component Redundancy 18-41Device and Reachability Redundancy 18-41

Capacity Planning for WebDialer 18-41Design Considerations for WebDialer 18-42

Cisco Unified Attendant Consoles 18-43Attendant Console Architecture 18-44High Availability for Attendant Consoles 18-45Capacity Planning for Attendant Consoles 18-46xxivCisco Collaboration 9.x SRND

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Design Considerations for Attendant Consoles 18-47

Contents

Cisco Paging Server 18-48Design Considerations for Cisco Paging Server 18-50

C H A P T E R 19 Cisco Voice Messaging 19-1


Voice Messaging Portfolio 19-2

Messaging Deployment Models 19-4Single-Site Messaging 19-5Centralized Messaging 19-5Distributed Messaging 19-5

Messaging and Unified CM Deployment Model Combinations 19-6Cisco Unity Connection Messaging and Unified CM Deployment Models 19-7

Centralized Messaging and Centralized Call Processing 19-7Cisco Unity Connection Survivable Remote Site Voicemail 19-8Distributed Messaging with Centralized Call Processing 19-11Combined Messaging Deployment Models 19-14Centralized Messaging with Clustering Over the WAN 19-15Distributed Messaging with Clustering Over the WAN 19-17

Messaging Redundancy 19-18Cisco Unity Connection 19-18Cisco Unity Connection Failover and Clustering Over the WAN 19-19Cisco Unity Connection Redundancy and Clustering Over the WAN 19-20Centralized Messaging with Distributed Unified CM Clusters 19-22

Cisco Unity Express Deployment Models 19-22Overview of Cisco Unity Express 19-23Deployment Models 19-23

Voicemail Networking 19-28Cisco Unity Express Voicemail Networking 19-29

Interoperability Between Multiple Cisco Unity Connection Clusters or Networks 19-29Cisco Unity Connection Virtualization 19-30

Best Practices for Voice Messaging 19-30Best Practices for Deploying Cisco Unity Connection with Unified CM 19-30

Managing Bandwidth 19-30Native Transcoding Operation 19-32Cisco Unity Connection Operation 19-32Integration with Cisco Unified CM 19-33Integration with Cisco Unified CM Session Management Edition 19-34IPv6 Support with Cisco Unity Connection 19-42xxvCisco Collaboration 9.x SRND

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Single Inbox with Cisco Unity Connection 19-43

Contents

Best Practices for Deploying Cisco Unity Express 19-45Voicemail Integration with Unified CM 19-45Cisco Unity Express Codec and DTMF Support 19-46JTAPI, SIP Trunk and SIP Phone Support 19-46

Third-Party Voicemail Design 19-47

C H A P T E R 20 Cisco IM and Presence 20-1


Presence 20-2On-Premises Cisco IM and Presence Components 20-3On-Premises Cisco IM and Presence User 20-4

Phone-Specific Presence and Busy Lamp Field 20-4Unified CM Presence with SIP 20-4Unified CM Presence with SCCP 20-6Unified CM Speed Dial Presence 20-6Unified CM Call History Presence 20-7Unified CM Presence Policy 20-7

Unified CM Subscribe Calling Search Space 20-7Unified CM Presence Groups 20-7

Unified CM Presence Guidelines 20-8

User Presence: Cisco IM and Presence Architecture 20-8On-Premises Cisco IM and Presence Cluster 20-9On-Premises Cisco IM and Presence Service High Availability 20-12On-Premises Cisco IM and Presence Deployment Models 20-13

On-Premises Cisco IM and Presence Deployment Examples 20-14On-Premises Cisco IM and Presence Deployment for Instant Messaging Only 20-16

On-Premises Cisco IM and Presence Service Performance 20-17On-Premises Cisco IM and Presence Deployment 20-17

Single-Cluster Deployment 20-17Intercluster Deployment 20-20Clustering Over the WAN 20-21Federated Deployment 20-22Instant Messaging Only Deployment 20-28

On-Premises Cisco IM and Presence Migration 20-28

On-Premises Cisco IM and Presence Enterprise Instant Messaging 20-29On-Premises Cisco IM and Presence Message Archiving and Compliance 20-30Instant Messaging Storage Requirements 20-31On-Premises Cisco IM and Presence Calendar Integration 20-33xxviCisco Collaboration 9.x SRND

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Outlook Web Access Calendar Integration 20-34

Contents

Exchange Web Services Calendar Integration 20-36On-Premises Cisco IM and Presence Mobility Integration 20-37On-Premises Cisco IM and Presence Third-Party Open API 20-37Design Considerations for On-Premises Cisco IM and Presence 20-40

Third-Party Presence Server Integration 20-41Microsoft Communications Server for Remote Call Control (RCC) 20-41IBM Lotus Sametime for Phone Control and Presence (PCAP) 20-43

In-the-Cloud Service and Architecture 20-44Cisco WebEx Messenger 20-44

Deploying Cisco WebEx Messenger Service 20-44Centralized Management 20-45Single Sign On 20-45Security 20-47Firewall Domain White List 20-48Logging Instant Messages 20-48Capacity Planning for Cisco WebEx Messenger Service 20-48High Availability for Cisco WebEx Messenger Service 20-49Design Considerations for Cisco WebEx Messenger Service 20-49Other Resources and Documentation 20-51

C H A P T E R 21 Cisco Collaboration Clients 21-1


Cisco Jabber Desktop Client Architecture 21-3Cisco Unified Communications Services for Jabber Desktop Clients 21-5

Jabber Desktop Clients Instant Messaging and Presence Services 21-5Jabber Desktop Clients Call Control 21-6Jabber Desktop Clients Dial Plan Considerations 21-6Jabber Desktop Clients Audio and Video Media 21-8Jabber Desktop Clients Audio, Video and Web Conferencing Services 21-9Jabber Desktop Clients Contact Management 21-9

Deploying Jabber Desktop Clients 21-10Capacity Planning for Jabber Desktop Clients 21-11High Availability for Jabber Desktop Clients 21-12Design Considerations for Jabber Desktop Clients 21-12

Common Deployment Models for Jabber Clients 21-12On-Premises Deployment Model 21-13Cloud-Based Deployment Model 21-14Hybrid Cloud-Based and On-Premises Deployment Model 21-15xxviiCisco Collaboration 9.x SRND

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Client-Specific Design Considerations 21-16

Contents

Cisco Jabber for Windows 21-16Client Launch Sequence 21-16Contact Sources 21-17Video Rate Adaptation and Resolution 21-17Extend and Connect 21-18

Cisco Jabber for Mac 21-18Client Launch Sequence 21-18Contact Sources 21-19

Cisco Jabber Instant Messaging and Presence Deployments 21-19Cisco IM and Presence 21-19

Client Scalability 21-20High Availability for Jabber Clients 21-20

Third-Party XMPP Clients Connecting to Cisco IM and Presence 21-21Cisco WebEx Messenger Service 21-22

Logging Instant Messages 21-22Capacity Planning for Cisco WebEx Messenger Service 21-22High Availability for Cisco WebEx Messenger Service 21-22Third-Party XMPP Clients Connecting to Cisco WebEx Messenger Service 21-23Other Resources and Documentation 21-23

Cisco UC IntegrationTM for Microsoft Lync Architecture 21-23Deploying Cisco UC IntegrationTM for Microsoft Lync 21-25

Configuration Settings 21-25Capacity Planning for Cisco UC IntegrationTM for Microsoft Lync 21-25High Availability for Cisco UC IntegrationTM for Microsoft Lync 21-25Design Considerations for Cisco UC IntegrationTM for Microsoft Lync 21-26

Cisco UC IntegrationTM for IBM Sametime Architecture 21-26Deploying Cisco UC IntegrationTM for IBM Sametime 21-28

Configuration Settings 21-28Capacity Planning for Cisco UC IntegrationTM for IBM Sametime 21-28High Availability for Cisco UC IntegrationTM for IBM Sametime 21-28Design Considerations for Cisco UC IntegrationTM for IBM Sametime 21-29

Cisco Virtualization Experience Client Architecture 21-29Deploying Cisco Virtualization Experience Clients 21-29

Cisco Virtualization Experience Client Manager 21-30Power Over Ethernet 21-30Network Considerations (Call Admission Control, Quality of Service, and Bandwidth) 21-30

Capacity Planning for Cisco Virtualization Experience Clients 21-31High Availability for Cisco Virtualization Experience Clients 21-31xxviiiCisco Collaboration 9.x SRND

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Design Considerations for Cisco Virtualization Experience Clients 21-32

Contents

Cisco IP Communicator 21-32

C H A P T E R 22 Cisco Collaboration Services 22-1


Collaborative Conferencing Architecture 22-3

Cisco WebEx Software as a Service 22-5Architecture 22-5

Scheduling 22-8User Profile 22-8

Cisco WebEx Meetings 22-9High Availability 22-10Cisco WebEx Cloud Connected Audio 22-10Capacity Planning 22-12

Network Traffic Planning 22-13Design Considerations 22-13

Cisco WebEx Meetings Server 22-14Architecture 22-14Cisco Unified CM Integration 22-17Legacy PBX Integration 22-18IPv6 Support 22-18High Availability 22-19Virtual IP Address 22-19Disaster Recovery for Dual Data Center Design 22-19Capacity Planning 22-20Storage Planning 22-20Network Traffic Planning 22-20Design Consideration 22-21Reference Document 22-21

Cisco WebEx Enabled TelePresence 22-22Architecture 22-22Scheduling 22-24Single Sign On 22-25Security 22-26Deployment Options 22-26

WebEx Audio Using SIP 22-26WebEx Audio Using PSTN 22-27Telephony Service Provider Audio 22-28

High Availability 22-29xxixCisco Collaboration 9.x SRND

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Contents

Network Traffic Planning 22-30Design Considerations 22-30

Cisco Unified MeetingPlace 22-31Unified MeetingPlace Architecture 22-32

Unified MeetingPlace Meeting Director Server 22-32Unified MeetingPlace Application Server (Conferencing Node) 22-32Media Server 22-33WebEx Site 22-33User Based Licensing 22-34Scheduling Interface 22-35Cisco Unified Communications Manager 22-45Recording 22-46Other Architectural Considerations 22-46

Deployment Options 22-47Single-Site Unified MeetingPlace Scheduling Deployment 22-47High Availability 22-48Capacity Planning 22-50Network Traffic Planning 22-50Design Considerations 22-50

Cisco WebEx Social 22-51Architecture 22-52

Call Control 22-52IM and Presence 22-55Cisco Jabber Client Integration 22-57Voicemail 22-58Calendar and Conferencing 22-58

Capacity Planning 22-60Design Consideration 22-61

C H A P T E R 23 Mobile Collaboration 23-1


Mobility Within the Enterprise 23-4Campus Enterprise Mobility 23-4

Campus Enterprise Mobility Architecture 23-4Types of Campus Mobility 23-5

Physical Wired Device Moves 23-5Wireless Device Roaming 23-6Extension Mobility (EM) 23-8xxxCisco Collaboration 9.x SRND

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Campus Enterprise Mobility High Availability 23-9

Contents

Capacity Planning for Campus Enterprise Mobility 23-9Design Considerations for Campus Enterprise Mobility 23-11

Multisite Enterprise Mobility 23-11Multisite Enterprise Mobility Architecture 23-12Types of Multisite Enterprise Mobility 23-13

Physical Wired Device Moves 23-13Wireless Device Roaming 23-13Extension Mobility (EM) 23-14Device Mobility 23-14

Multisite Enterprise Mobility High Availability 23-24Capacity Planning for Multisite Enterprise Mobility 23-25Design Considerations for Multisite Enterprise Mobility 23-25

Remote Enterprise Mobility 23-26Remote Enterprise Mobility Architecture 23-26Types of Remote Enterprise Mobility 23-27

Client-Based Secure Remote Connectivity 23-28Router-Based Secure Remote Connectivity 23-28Device Mobility and VPN-Based Remote Enterprise Connectivity 23-28Enterprise Edge Secure Remote Connectivity 23-29

Remote Enterprise Mobility High Availability 23-30Capacity Planning for Remote Enterprise Mobility 23-30Design Considerations for Remote Enterprise Mobility 23-31

Mobility Beyond the Enterprise 23-31Cisco Unified Mobility 23-33Mobile Connect 23-35

Mobile Connect Functionality 23-35Mobile Connect Architecture 23-43High Availability for Mobile Connect 23-44

Cisco TelePresence FindMe 23-45Mobile Voice Access and Enterprise Feature Access 23-45

Mobile Voice Access IVR VoiceXML Gateway URL 23-46Mobile Voice Access Functionality 23-46Enterprise Feature Access with Two-Stage Dialing Functionality 23-49Mobile Voice Access and Enterprise Feature Access Architecture 23-53High Availability for Mobile Voice Access and Enterprise Feature Access 23-53

Designing Cisco Unified Mobility Deployments 23-54Dial Plan Considerations for Cisco Unified Mobility 23-54Guidelines and Restrictions for Unified Mobility 23-58xxxiCisco Collaboration 9.x SRND

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Capacity Planning for Cisco Unified Mobility 23-59

Contents

Design Considerations for Cisco Unified Mobility 23-60Cisco Mobile Clients and Devices 23-61

Cisco Mobile Clients and Devices Architecture 23-62Deployment Considerations for Cisco Mobile Clients and Devices 23-75High Availability for Cisco Mobile Clients and Devices 23-84Capacity Planning for Cisco Mobile Clients and Devices 23-85Design Considerations for Cisco Mobile Clients and Devices 23-86

C H A P T E R 24 Cisco Unified Contact Center 24-1


Cisco Contact Center Architecture 24-2Cisco Unified Contact Center Enterprise 24-2Cisco Unified Customer Voice Portal 24-4Cisco Unified Contact Center Express 24-5Cisco SocialMiner 24-5Administration and Management 24-6Reporting 24-6Multichannel Support 24-6Recording and Silent Monitoring 24-6

Contact Center Deployment Models 24-7Single-Site Contact Center 24-7Multisite Contact Center with Centralized Call Processing 24-7Multisite Contact Center with Distributed Call Processing 24-9Clustering Over the IP WAN 24-10

Design Considerations for Contact Center Deployments 24-12High Availability for Contact Centers 24-12Bandwidth, Latency, and QoS Considerations 24-13

Bandwidth Provisioning 24-13Latency 24-13QoS 24-14

Call Admission Control 24-14Integration with Unified CM 24-14Other Design Considerations for Contact Centers 24-15

Capacity Planning for Contact Centers 24-16

Contact Center Solutions for Vertical Industries 24-17Cisco Remote Expert Smart Solution 24-17

Network Management Tools 24-18xxxiiCisco Collaboration 9.x SRND

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Contents

C H A P T E R 25 Call Recording and Monitoring 25-1


Types of Monitoring and Recording Solutions 25-1SPAN-Based Solutions 25-2Silent Monitoring and Recording with Unified CM 25-3Cisco MediaSense 25-4

Deployment 25-5Agent Desktop 25-8Cisco TelePresence Content Server 25-8

Cisco TelePresence Content Server Deployments 25-9

Capacity Planning for Monitoring and Recording 25-11

P A R T 4 Collaboration System Provisioning and Management

C H A P T E R 26 Overview of Collaboration System Provisioning and Management 26-1

Architecture 26-2



C H A P T E R 27 Collaboration Solutions Design and Deployment Sizing Considerations 27-1


Methodology for System Sizing 27-2Performance Testing 27-3System Modeling 27-4

Memory Usage Analysis 27-4CPU Usage Analysis 27-5

Traffic Engineering 27-5Definitions 27-6Voice Traffic 27-7Contact Center Traffic 27-7Video Traffic 27-8Conferencing and Collaboration Traffic 27-8

System Sizing Considerations 27-9Network Design Factors 27-9Other Sizing Factors 27-10

Sizing Tools Overview 27-10

Using the SME Sizing Tool 27-11xxxiiiCisco Collaboration 9.x SRND

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Using the VXI Sizing Tool 27-12

Contents

Using the Cisco Unified Communications Sizing Tool 27-13Cisco Unified Communications Manager 27-13

Server and Cluster Maximums 27-14Deployment Options 27-14Endpoints 27-15Cisco Collaboration Clients and Applications 27-16Call Traffic 27-20Dial Plan 27-21Applications and CTI 27-22Media Resources 27-27LDAP Directory Integration 27-29

Cisco Unified CM Megacluster Deployment 27-30Cisco Intercompany Media Engine 27-30Emergency Services 27-31Gateways 27-31

Gateway Groups 27-32PSTN Traffic 27-32Gateway Sizing for Contact Center Traffic 27-33Voice Activity Detection (VAD) 27-33Codec 27-34Performance Overload 27-34Performance Tuning 27-34Additional Information 27-35

Voice Messaging 27-36Collaborative Conferencing 27-38

Sizing Guidelines for Audio Conferencing 27-38Factors Affecting System Sizing 27-39Sizing Guidelines for Video Conferencing 27-39Impact on Unified CM 27-39Cisco WebEx Meetings Server 27-39Collaborative Conferencing with MeetingPlace 27-42

Cisco IM and Presence 27-44Cisco Unified Communications Management Tools 27-45

Cisco Prime Unified Provisioning Manager 27-46Cisco Prime Unified Operations Manager 27-46Cisco Prime Unified Service Monitor 27-46Cisco Unified Service Statistics Manager 27-47

Sizing for Standalone Products 27-47Cisco Unified Communications Manager Express 27-47xxxivCisco Collaboration 9.x SRND

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Cisco Business Edition 27-47

Contents

Busy Hour Call Attempts (BHCA) for Cisco Business Edition 27-47Device Calculations for Cisco Business Edition 27-48Cisco Unified Mobility for Cisco Business Edition 27-49

C H A P T E R 28 IP Telephony Migration Options 28-1


Coexistence or Migration? 28-2

Migration Prerequisites 28-2

Unified Communications Migration 28-2

The Need for QSIG in Multisite Enterprises 28-4

Summary of IP Telephony Migration 28-4

Centralized Unified Communications Deployment 28-5

Which Unified Communications Service First? 28-5

Migrating from Physical Servers to Virtual Machines 28-5

Cisco IM and Presence Migration 28-6

Migrating Video Devices to Unified CM 28-7

Migrating Licenses to the Cisco Enterprise License Manager (ELM) 28-8

C H A P T E R 29 Network Management 29-1


Cisco Prime Collaboration 29-2Failover and Redundancy 29-4Cisco Prime Collaboration Server Performance 29-4

Network Infrastructure Requirements for Cisco Unified Network Management 29-4

Assurance 29-5Assurance Design Considerations 29-6

Voice Quality Monitoring 29-7Voice Quality Measurement 29-7Cisco 1040 Sensor Voice Quality Monitoring 29-8

Strategic vs. Tactical Monitoring 29-9Design Considerations for the Cisco 1040 Sensor 29-9

Unified CM Voice Quality Monitoring 29-9Cisco Network Analysis Module (NAM) 29-10Comparison of Voice Quality Monitoring Methods 29-10Trunk Utilization 29-11Failover and Redundancy 29-11Voice Monitoring Capabilities 29-11xxxvCisco Collaboration 9.x SRND

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Contents

Assurance Ports and Protocol 29-12Bandwidth Requirements 29-13

Analytics 29-13Analytics Server Performance 29-14

Provisioning 29-14Provisioning Concepts 29-14Best Practices 29-16Prime Collaboration Design Considerations 29-17Redundancy and Failover 29-17Provisioning Ports and Protocol 29-18

Cisco TelePresence Management Suite (TMS) 29-18Calendaring Options 29-18Reporting 29-19Management 29-20

Endpoint and Infrastructure Management 29-20Provisioning 29-21Phone books 29-21Maintenance and Monitoring 29-21

Additional Tools 29-22Cisco Unified Analysis Manager 29-22Cisco Unified Reporting 29-23

Integration with Cisco Unified Communications Deployment Models 29-24Campus 29-24Multisite WAN with Centralized Call Processing 29-26Multisite WAN with Distributed Call Processing 29-28Clustering over the WAN 29-29

G L O S S A R Y

I N D E XxxxviCisco Collaboration 9.x SRND

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Preface

Revised: August 23, 2013; OL-29367-04

This document provides design considerations and guidelines for deploying Cisco Unified Communications and Collaboration solutions, including Cisco Unified Communications Manager 9.x, Cisco TelePresence Video Communication Server, and other components of Cisco Unified Communications and Collaboration systems.This document has evolved from a long line of Solution Reference Network Design (SRND) guides produced by Cisco over the past decade. As Ciscos voice, video, and data communications technologies have developed and grown over time, the SRND has been revised and updated to document those technology advancements. This latest version of the SRND includes Ciscos full spectrum of collaboration technologies such as TelePresence, WebEx, and support for a wide range of end-user devices. As Cisco continues to develop and enhance collaboration technologies, this SRND will continue to evolve and be updated to provide the latest guidelines, recommendations, and best practices for designing collaboration solutions.This document should be used in conjunction with other documentation available at the following locations:

For other Solution Reference Network Design (SRND) documents:http://www.cisco.com/go/ucsrnd

For more information about the Cisco Unified Communications System:http://www.cisco.com/go/unified-techinfohttp://www.cisco.com/en/US/products/sw/voicesw/index.html

For more information about Cisco Unified Communications Manager:http://www.cisco.com/en/US/products/sw/voicesw/ps556/tsd_products_support_series_home.htmlhttp://www.cisco.com/en/US/products/sw/voicesw/products.html

For information on Cisco TelePresence Video Communication Server:http://www.cisco.com/en/US/products/ps11337/tsd_products_support_series_home.htmlxxxviiCisco Collaboration 9.x SRND

OL-29367-04

http://www.cisco.com/en/US/products/ps7060/index.html For other Cisco design guides:

http://www.cisco.com/go/designzone For all Cisco products and documentation:

http://www.cisco.com

New or Changed Information for This Release

Note Unless stated otherwise, the information in this document applies to Release 9.x of the Cisco Unified Communications System and Release 7.x of the Cisco TelePresence Video Communication Server.

Within each chapter of this guide, new and revised information is listed in a section titled Whats New in This Chapter.Although much of the content in this document is similar to previous releases of the Cisco Unified Communications System SRND, it has been reorganized extensively to reflect more accurately the architecture of the Cisco Unified Communications and Collaboration System. Cisco recommends that you review this entire document, starting with the Introduction, page 1-1, to become familiar with the technology and the system architecture.

Revision HistoryThis document may be updated at any time without notice. You can obtain the latest version of this document online at:

http://www.cisco.com/go/ucsrndVisit this Cisco.com website periodically and check for documentation updates by comparing the revision date of your copy with the revision date of the online document.The following table lists the revision history for this document.

Revision Date Document Part Number Comments

August 23, 2013 OL-29367-04 Periodic update of various chapters. For details, in each chapter see Whats New in This Chapter.

June 28, 2013 OL-29367-03 Periodic update of various chapters. For details, in each chapter see Whats New in This Chapter.

May 24, 2013 OL-29367-02 Periodic update of various chapters. For details, in each chapter see Whats New in This Chapter.

April 2, 2013 OL-29367-01 Complete reorganization and revision of this document to include information on Cisco TelePresence and Collaboration technologies, in addition to updates for Cisco Unified Communications System Release 9.1. For details, in each chapter see Whats New in This Chapter.

October 31, 2012 OL-27282-04 Periodic update of various chapters. For details, in each chapter see Whats New in This Chapter.

September 28, 2012 OL-27282-03 Periodic update of various chapters. For details, in each chapter see Whats New in This Chapter.

August 31, 2012 OL-27282-02 Periodic update of various chapters. For details, in each chapter see Whats New in This Chapter.

June 28, 2012 OL-27282-01 Initial version of this document for Cisco Unified Communications System Release 9.0.xxxviiiCisco Collaboration 9.x SRND

OL-29367-04

Obtaining Documentation and Submitting a Service RequestFor information on obtaining documentation, submitting a service request, and gathering additional information, see Whats New in Cisco Product Documentation at: http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html.Subscribe to Whats New in Cisco Product Documentation, which lists all new and revised Cisco technical documentation, as an RSS feed and deliver content directly to your desktop using a reader application. The RSS feeds are a free service.

Cisco Product Security OverviewThis product contains cryptographic features and is subject to United States and local country laws governing import, export, transfer and use. Delivery of Cisco cryptographic products does not imply third-party authority to import, export, distribute, or use encryption. Importers, exporters, distributors and users are responsible for compliance with U.S. and local country laws. By using this product you agree to comply with applicable laws and regulations. If you are unable to comply with U.S. and local laws, return this product immediately.Further information regarding U.S. export regulations may be found at:

http://www.access.gpo.gov/bis/ear/ear_data.html

ConventionsThis document uses the following conventions:

Convention Indication

bold font Commands and keywords and user-entered text appear in bold font.italic font Document titles, new or emphasized terms, and arguments for which you supply

values are in italic font.[ ] Elements in square brackets are optional.{x | y | z } Required alternative keywords are grouped in braces and separated by

vertical bars.[ x | y | z ] Optional alternative keywords are grouped in brackets and separated by

vertical bars.string A nonquoted set of characters. Do not use quotation marks around the string or

the string will include the quotation marks.courier font Terminal sessions and information the system displays appear in courier font.< > Nonprinting characters such as passwords are in angle brackets.[ ] Default responses to system prompts are in square brackets.!, # An exclamation point (!) or a pound sign (#) at the beginning of a line of code

indicates a comment line.xxxixCisco Collaboration 9.x SRND

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Note Means reader take note. Notes contain helpful suggestions or references to material not covered in the manual.

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Warning Statements using this symbol are provided for additional information and to comply with regulatory and customer requirements.xlCisco Collaboration 9.x SRND

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Cisco Collaboration Technology comprises an arrcollaboration solutions for virtually any size or tyconsists of the following main elements, illustrate

Collaboration Infrastructure, page 1-2 Collaboration Applications and Services, pag The Collaboration User Experience, page 1-3ay of products to build complete end-to-end pe of enterprise. Cisco Collaboration Solutions d in conceptual form in Figure 1-1:C H A P T E R 1Introduction

Revised: May 24, 2013; OL-29367-04

Collaboration means working together to achieve a common goal. Not very long ago, the best way for people to collaborate was for them to be in the same location at the same time so that they were in direct contact with each other. In todays globalized economy with decentralized business resources, outsourced services, and increasing costs for office facilities and travel, bringing people together in the same physical location is not the most efficient or effective way to collaborate. But with Cisco Collaboration Solutions, workers can now collaborate with each other anytime, anywhere, with a substantial savings in time and expenses.Cisco Collaboration Solutions support the full range of voice, video, and data communications, including the latest advances in mobile communications and social media. Cisco Collaboration Solutions also provide an extensive set of applications and services that can be deployed either on premises or in the cloud.

What's New in This ChapterTable 1-1 lists the topics that are new in this chapter or that have changed significantly from previous releases of this document.

Cisco End-to-End Collaboration Solutions

Table 1-1 New or Changed Information Since the Previous Release of This Document

New or Revised Topic Described in Revision Date

Addition of navigation aids for this document How to Use this Document, page 1-5 May 24, 2013Major reorganization and revision of this chapter All sections of this chapter April 2, 20131-1Cisco Collaboration 9.x SRND

e 1-3

Chapter 1 IntroductionCisco End-to-End Collaboration SolutionsFigure 1-1 Cisco Collaboration Architecture

Collaboration InfrastructureCisco has long been recognized as the world leader in routing and switching technology. This technology forms the core of the network infrastructure for Cisco Collaboration Solutions. The Quality of Service (QoS) mechanisms available on Cisco switches and routers ensure that the voice, video, and data communications will be of the highest quality throughout the network. In addition, Cisco gateways provide a number of methods for connecting your enterprises internal network to an external wide area network (WAN) as well as to the public switched telephone network (PSTN) and to legacy systems such as a PBX. And for a smooth transition into the future, the Cisco Hosted Collaboration Solution (HCS) enables Cisco partners to offer customers cloud-based, hosted collaboration services that are secure, flexible, low-cost, scalable, and always current with the latest technology.Cisco also produces several platforms for processing and controlling collaboration sessions. These platforms can provide collaboration services for small and medium businesses, and they can scale up to handle large global enterprises such as Cisco. In addition, Cisco Unified Communications Manager can be installed as an application on a virtual machine using Open Virtualization Archive (OVA) templates.In most cases you will want your collaboration sessions to be secure. That is why Cisco has developed a number of security mechanism to protect each level of the collaboration path, from the network core to the end-user devices.Once your collaboration solution is implemented, you will want to monitor and manage it. Cisco has developed a wide variety of tools, applications, and products to assist system administrators in provisioning, operating, monitoring and maintaining their collaboration solutions. With these tools the system administrator can monitor the operational status of network components, gather and analyze statistics about the system, and generate custom reports.

User Experience and Environments

Find and Connect Communicate and Meet Create, Share, Consume

Environments

UC Clients Web Conference WebEx Social Customer Care

Desktop and Mobile Devices TelePresence Systems

Applications and Clients

Call Control IM and Presence Directory Social Media Content Management Conferencing Scheduling Edge Services Messaging Media Services

Collaboration Services

Virtualization Network Compute Storage

Network and Compute Infrastructure

Fundamental Technologies

Deployment Models

Management

Security

QoS

Standards

Medianet

On Premises

Hosted or Managed

Cloud

P00

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Chapter 1 IntroductionCisco End-to-End Collaboration SolutionsCollaboration Applications and ServicesCisco Collaboration Solutions incorporate a number of advanced applications and services, including:

Instant messaging (IM) and presence The Cisco IM and Presence Service enables Cisco Jabber, Cisco Unified Communications Manager applications, and third-party applications to increase user productivity by determining the most effective form of communication to help connect collaborating partners more efficiently.

Collaborative conferencing Cisco WebEx incorporates audio, high-definition (HD) video, and real-time content sharing in a platform that provides easy setup and administration of meetings, interactive participation in the meeting, and the ability to join the meeting from any type of device such as an IP phone, a tablet device, or a desktop computer.

Telepresence Cisco TelePresence technology brings people together in real-time without the expense and delay of travel. The Cisco TelePresence portfolio of products includes an array of high-definition (HD) video endpoints ranging from individual desktop units to large multi-screen immersive video systems for conference rooms. And Cisco TelePresence products are designed to interoperate with other Cisco collaboration products such as Cisco WebEx and Cisco Unified IP Phones with video capability.

Voice messaging Cisco products provide several voice messaging options for large and small collaboration systems, as well as the ability to integrate with third-party voicemail systems using standard protocols.

Customer contact Cisco Unified Contact Center products provide intelligent contact routing, call treatment, and multichannel contact management for customer contact centers. Cisco Unified Customer Voice Portal can be installed as a standalone interactive voice recognition (IVR) system, or it can integrate transparently with the contact center to deliver personalized self-service for customers. In addition, Cisco SocialMiner is a powerful tool for engaging with customers through the social media.

Call recording Cisco MediaSense can capture, preserve, and mine conversations for business intelligence and can provide real-time monitoring of customer conversations with contact center personnel.

The Collaboration User ExperienceCollaboration is all about the user experience. When users have a good experience with collaboration technology, they will use that technology more often and will achieve better results with it. That translates into a bigger return on investment (ROI) for the enterprise that has adopted the collaboration technology. And that is why Cisco has focused on making its collaboration technology easy, convenient, and beneficial to use, with particular emphasis on the following enhancements to the user experience:

Wide variety of collaboration endpoints Cisco produces a compete line of endpoint devices ranging from basic voice-only phones, to phones with video and Internet capability, and to high-resolution telepresence and immersive video devices. Cisco Collaboration Technology also provides the ability to integrated third-party endpoint devices into the collaboration solution.

Cisco BYOD Smart Solution With the Cisco Bring Your Own Device (BYOD) Smart Solution, users can work from their favorite personal device, be it a smartphone, tablet, or PC. In addition to enhancing the work experience, the Cisco BYOD Smart Solution ensures greater network security and simplifies network management by providing a single policy for wired and Wi-Fi access across your organization.1-3Cisco Collaboration 9.x SRND

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Chapter 1 IntroductionAbout this Document Mobile collaboration Cisco mobile collaboration solutions provide mobile workers with persistent reachability and improved productivity as they move between, and work at, a variety of locations. Cisco mobility solutions include features and capabilities such as: Extension Mobility to enable users to log onto any phone in the system and have that phone assume the users default phone settings; Cisco Jabber to provide core collaboration capabilities for voice, video, and instant messaging to users of third-party mobile devices such as smartphones and tablets; and Single Number Reach to provide a single enterprise phone number that rings simultaneously on an individual users desk phone and mobile phone.

Social networking Social media is not just for personal use anymore. With Cisco WebEx Social, enterprises can bring the community dynamic and real-time collaboration potential of social media into their business environment.

Applications and service As mentioned previously, Cisco has developed many advanced applications and services to enrich the collaboration experience for end users (see Collaboration Applications and Services, page 1-3). Whenever possible, Cisco strives to adhere to widely accepted industry standards in developing its collaboration technology so that you can easily integrate third-party applications and services into your collaboration solutions. In addition, the application programming interfaces available with many Cisco collaboration products enable you to develop your own custom applications.

About this DocumentThis document is a Solution Reference Network Design (SRND) guide for Cisco Collaboration Solutions. It presents system-level requirements, recommendations, guidelines, and best practices for designing a collaboration solution to fit your business needs.This document has evolved from a long line of SRNDs produced by Cisco over the past decade. As Ciscos voice, video, and data communications technologies have developed and grown over time, the SRND has been revised and updated to document those technology advancements. Early versions of the SRND focused exclusively on Ciscos Voice over IP (VoIP) technology. Subsequent versions documented Cisco Unified Communications and added information on new technologies for mobile voice communications, conferencing, instant messaging (IM), presence, and video telephony. This latest version of the SRND now includes Ciscos full spectrum of collaboration technologies such as TelePresence, WebEx Social, and support for all types of end-user devices (Bring Your Own Device, or BYOD). As Cisco continues to develop and enhance collaboration technologies, this SRND will continue to evolve and be updated to provide the latest guidelines, recommendations, and best practices for designing collaboration solutions.1-4Cisco Collaboration 9.x SRND

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Chapter 1 IntroductionAbout this DocumentHow to Use this DocumentThis document is organized into four main parts:

System Components and ArchitectureThe chapters in this part of the document describe the main components of Cisco Collaboration Technology and explain how those components work together to form a complete end-to-end collaboration solution. The main components include the network infrastructure, security, gateways, trunks, media resources, endpoints, call processing agents, deployment models, and rich media conferencing.

Call Control and RoutingThe chapters in this part of the document explain how voice and video calls are established, routed, and managed in the collaboration system. The topics covered in this part include call admission control, dial plan, emergency services, and directory integration.

Clients and ApplicationsThe chapters in this part of the document describe the collaboration clients, applications, and services that can be incorporated into your collaboration solution. The topics covered in this part include Cisco Unified Communications Manager embedded applications, voice messaging, IM and presence, collaboration clients, collaboration services, mobile collaboration, contact centers, and call recording.

System Provisioning and ManagementThe chapters in this part of the document explain how to size the components of your collaboration solution, how to migrate to that solution, and how to manage it. The topics covered in this part include sizing considerations, migration options, and network management.

For Experienced Users of this Document

Readers who are familiar with a previous version of this SRND or who are experienced at designing Unified Communications and Collaboration solutions can use this document as a reference source. You do not have to read every page or every chapter, but instead can search through this document for the particular topics you need. You should also check this document monthly for updates to the topics of interest to you.

For New Users of This Document

We realize that this document is long and that it contains an extensive amount of complex technical information. It can seem intimidating, particularly if you are a first-time reader of this document or if you do not have much experience with designing Unified Communications and Collaboration solutions. To help orient you to this document and to Collaboration technology, we recommend that you start by reading the overviews for the four main parts of this document:

Overview of Cisco Collaboration System Components and Architecture, page 2-1 Overview of Call Control and Routing, page 12-1 Overview of Collaboration Clients and Applications, page 17-1 Overview of Collaboration System Provisioning and Management, page 26-1

These overviews describe the organization of this document and they provide a high-level view of the overall architecture for Cisco Unified Communications and Collaboration solutions.1-5Cisco Collaboration 9.x SRND

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Chapter 1 IntroductionAbout this DocumentAfter you read the main overviews, we recommend that you read and become familiar with the sections of this document that are essential for the design of any and all Unified Communications and Collaboration solutions. The following list provides links to those sections that apply to all designs, and they are listed here in the order we recommend reading them:

Network Infrastructure

LAN Infrastructure

Power over Ethernet (PoE), page 3-13 LAN Quality of Service (QoS), page 3-15 QoS Design Considerations for Video, page 3-22 Network Services, page 3-23

WAN Infrastructure WAN Quality of Service (QoS), page 3-37 Bandwidth Provisioning, page 3-45

Wireless LAN Infrastructure Design Considerations for Voice and Video over WLAN, page 3-60 WLAN Quality of Service (QoS), page 3-66

Cisco Medianet, page 3-77

Cisco Collaboration Security

Access Security, page 4-6

Gateways, page 5-1

All sections

Cisco Unified CM Trunks

Unified CM Trunks Solution Architecture, page 6-2 A Comparison of SIP and H.323 Trunks, page 6-3 SIP Trunks Overview

General Deployment Considerations, page 6-7 SIP Trunk Features and Operation, page 6-7

H.323 Trunks Overview [optional] General H.323 Intercluster Trunk Deployment Considerations, page 6-38 Basic Operation of H.323 Trunks, page 6-39 Other Design Considerations for H.323 Trunks, page 6-57

IP PSTN and IP Trunks to Service Provider Networks, page 6-64 Cisco Unified Border Element, page 6-651-6Cisco Collaboration 9.x SRND

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Chapter 1 IntroductionAbout this DocumentMedia Resources

Media Resources Architecture, page 7-2 Annunciator, page 7-16 Music on Hold, page 7-18 Design Considerations for Media Resources, page 7-37

Call Processing

Call Processing Architecture Call Processing Hardware, page 9-4 Unified CM Cluster Services, page 9-6

Design Considerations for Call Processing, page 9-32

Collaboration Deployment Models

Deploying Unified Communications and Collaboration, page 10-2 Deployment Model Architecture, page 10-3 Common Design Criteria, page 10-5 Campus, page 10-9 Multisite with Centralized Call Processing, page 10-10 Multisite with Distributed Call Processing

Best Practices for the Distributed Call Processing Model, page 10-23 Leaf Unified Communications Systems for the Distributed Call Processing Model, page 10-23

Cisco Rich Media Conferencing

Types of Conferences, page 11-2 Cisco Rich Media Conferencing Architecture, page 11-3 Design Considerations for Cisco Rich Media Conferencing, page 11-32

Dial Plan

Dial Plan Fundamentals, page 14-3 Dial Plan Elements

Cisco Unified Communications Manager, page 14-13 Recommended Design

Globalized Dial Plan Approach on Unified CM, page 14-50

LDAP Directory Integration

What is Directory Integration?, page 16-2 Directory Access for Unified Communications Endpoints, page 16-3 Directory Integration with Unified CM

Cisco Unified Communications Directory Architecture, page 16-6 LDAP Synchronization, page 16-9 LDAP Authentication, page 16-181-7Cisco Collaboration 9.x SRND

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Chapter 1 IntroductionAbout this DocumentCisco Voice Messaging

Voice Messaging Portfolio, page 19-2 Messaging Deployment Models, page 19-4 Messaging and Unified CM Deployment Model Combinations

Cisco Unity Connection Messaging and Unified CM Deployment ModelsCentralized Messaging and Centralized Call Processing, page 19-7Cisco Unity Connection Survivable Remote Site Voicemail, page 19-8Distributed Messaging with Centralized Call Processing, page 19-11Combined Messaging Deployment Models, page 19-14

Messaging RedundancyCisco Unity Connection, page 19-18Centralized Messaging with Distributed Unified CM Clusters, page 19-22

Best Practices for Voice Messaging

Best Practices for Deploying Cisco Unity Connection with Unified CMManaging Bandwidth, page 19-30Native Transcoding Operation, page 19-32Cisco Unity Connection Operation, page 19-32Integration with Cisco Unified CM, page 19-33

After you have read the chapters and sections listed above, you can begin exploring other sections of this document that contain more details relevant to your particular solution design.

Where to Find Additional InformationBecause this document covers a wide spectrum of Cisco Collaboration products and possible solution designs, it cannot provide all the details of individual products, features, or configurations. For that type of detailed information, refer to the specific product documentation available at

http://www.cisco.comThis document provides general guidance on how to design your own collaboration solutions using Cisco Collaboration technology. Cisco has also developed, tested, and documented specific solutions for certain applications, and has made those solutions available for customers to copy and deploy. They are part of the Cisco Validated Design program described and documented at

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P A R T 1

Collaboration System Components and Architecture

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Network Infrastructure, page 3-1This chapter describes the requirements of theUnified Communications and Collaboration Sthis chapter describe the network infrastructuLAN infrastructures. The chapter treats the arebandwidth provisioning as is pertinent to each network infrastructure needed to build a Cisco ystem in an enterprise environment. The sections in

re features as they relate to LAN, WAN, and wireless as of design, high availability, quality of service, and C H A P T E R 2Overview of Cisco Collaboration System Components and Architecture

Revised: April 2, 2013; OL-29367-04

A solid network infrastructure is required to build a successful Unified Communications and Collaboration system in an enterprise environment. Other key aspects of the network architecture include selection of the proper hardware and software components, system security, and deployment models.Unified Communications and Collaboration over an IP network places strict requirements on IP packet loss, packet delay, and delay variation (or jitter). Therefore, you need to enable most of the Quality of Service (QoS) mechanisms available on Cisco switches and routers throughout the network. For the same reasons, redundant devices and network links that provide quick convergence after network failures or topology changes are also important to ensure a highly available infrastructure. The following aspects are essential to the topic of Unified Communications and Collaboration networking and are specifically organized here in order of importance and relevance to one another:

Network Infrastructure Ensures a redundant and resilient foundation with QoS enabled for Unified Communications and Collaboration applications.

Voice Security Ensures a general security policy for Unified Communications and Collaboration applications, and a hardened and secure networking foundation for them to rely upon.

Deployment Models Provide tested models in which to deploy Unified Communications and Collaboration call control and applications, as well as best practices and design guidelines to apply to Unified Communications and Collaboration deployments.

The chapters in this part of the SRND cover the networking subjects mentioned above. Each chapter provides an introduction to the subject matter, followed by discussions surrounding architecture, high availability, capacity planning, and design considerations. The chapters focus on design-related aspects rather than product-specific support and configuration information, which is covered in the related product documentation.This part of the SRND includes the following chapters:2-1Cisco Collaboration 9.x SRND

infrastructure.

Chapter 2 Overview of Cisco Collaboration System Components and Architecture Cisco Collaboration Security, page 4-1This chapter presents guidelines and recommendations for securing Unified Communications and Collaboration networks. The topics in this chapter range from general security, such as policy and securing the infrastructure, to endpoint security in VLANs, on switch ports, and with QoS. Other security aspects covered in this chapter include access control lists, securing gateways and media resources, firewalls, data center designs, securing application servers, and network virtualization.

Gateways, page 5-1This chapter explores IP gateways, which are critical components of Unified Communications and Collaboration deployments because they provide the path for connecting to public networks. This chapter looks at gateway traffic types and patterns, protocols, capacity planning, and platform selection, as well as fax and modem support.

Cisco Unified CM Trunks, page 6-1This chapter covers both intercluster and provider trunks, which provide the ability to route calls over IP and to leverage various Unified Communications and Collaboration features and functions. This chapter discusses H.323 and SIP tr

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