Cisco Collaboration System 10.x Solution Reference Network ...

Cisco Collaboration System 10.x Solution Reference Network Designs (SRND)

January 15 2015

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Text Part Number: OL-30952-03

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C 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 xxxviii

Cisco Product Security Overview xxxix

Conventions xxxix

C H A P T E R 1 Introduction 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

Whats New in This Chapter 3-4

LAN Infrastructure 3-4LAN Design for High Availability 3-4

Campus Access Layer 3-5Routed Access Layer Designs 3-7Campus Distribution Layer 3-10Campus Core Layer 3-12

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Power 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 3-20Congestion Scenario 3-20QoS Implementation with Cisco UCS B-Series 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 3-35Dynamic Multipoint VPN (DMVPN) 3-36Best-Effort Bandwidth 3-36

WAN Quality of Service (QoS) 3-37Traffic Prioritization 3-38Scavenger Class 3-40Link Efficiency Techniques 3-40Traffic Shaping 3-42

Bandwidth Provisioning 3-44Provisioning for Bearer Traffic 3-45Provisioning for Call Control Traffic 3-49

Wireless LAN Infrastructure 3-53Architecture for Voice and Video over WLAN 3-53

Wireless Access Points 3-54Wireless LAN Controllers 3-55Authentication Database 3-55Supporting Wired Network 3-56Wireless Collaboration Endpoints 3-56Wired Call Elements 3-56Call Control 3-56Media Termination 3-56

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High Availability for Voice and Video over WLAN 3-57Supporting Wired Network High Availability 3-57WLAN High Availability 3-57Call Processing High Availability 3-59

Capacity Planning for Voice and Video over WLAN 3-59Design Considerations for Voice and Video over WLAN 3-59

Wireless AP Configuration and Design 3-63Wireless LAN Controller Design Considerations 3-64

WLAN Quality of Service (QoS) 3-65Traffic Classification 3-66User Priority Mapping 3-66Interface Queuing 3-67Wireless Call Admission Control 3-68

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 4-5IP Addressing 4-5IPv6 Addressing 4-6

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

Port Security: MAC CAM Flooding 4-8Port Security: Prevent Port Access 4-9Port Security: Prevent Rogue Network Extensions 4-9DHCP Snooping: Prevent Rogue DHCP Server Attacks 4-10DHCP Snooping: Prevent DHCP Starvation Attacks 4-11DHCP Snooping: Binding Information 4-12Requirement for Dynamic ARP Inspection 4-12802.1X Port-Based Authentication 4-14

Endpoint Security 4-15PC Port on the Phone 4-15PC Voice VLAN Access 4-16Web Access Through the Phone 4-17Settings Access 4-17

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Cisco TelePresence Endpoint Hardening 4-18Authentication and Encryption 4-18VPN Client for IP Phones 4-20Quality 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 4-26

Network Address Translation for Voice and Video 4-26

Data Center 4-27

Gateways, Trunks, and Media Resources 4-28Putting Firewalls Around Gateways 4-29Firewalls and H.323 4-30Secure Audio and Video Conferencing 4-30Unified CM Trunk Integration with Cisco Unified Border Element 4-31

Cisco Unified Border Element Phone Proxy 4-32

Cisco TelePresence Video Communication Server (VCS) 4-33Cisco Expressway in a DMZ 4-34

Applications Servers 4-35Single Sign-On 4-35SELinux on the Unified CM and Application Servers 4-35General Server Guidelines 4-35

Deployment Examples 4-36Lobby Phone Example 4-36Firewall Deployment Example (Centralized Deployment) 4-37

Securing Network Virtualization 4-38Scenario 1: Single Data Center 4-39Scenario 2: Redundant Data Centers 4-40

Conclusion 4-42

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 5-3

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Cisco 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 5-15Tuning 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 6-3

A Comparison of SIP and H.323 Trunks 6-4

SIP Trunks Overview 6-6

Session Initiation Protocol (SIP) Operation 6-7SIP Offer/Answer Model 6-7

SIP Delayed Offer 6-8SIP Early Offer 6-8

Provisional Reliable Acknowledgement (PRACK) 6-9Session Description Protocol (SDP) and Media Negotiation 6-10

Session Description Protocol (SDP) and Voice Calls 6-10Session Description Protocol (SDP) and Video Calls 6-12Video Desktop Sharing and Binary Floor Control Protocol (BFCP) 6-14Far End Camera Control (FECC) 6-14

Unified CM SIP Trunk Features and Operation 6-15

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Run on All Unified CM Nodes 6-15SIP Trunks Run on All Nodes and the Route Local Rule 6-15Route Lists Run on All Nodes and the Route Local Rule 6-16

Up to 16 SIP Trunk Destination IP Addresses 6-16SIP Trunks Using DNS 6-18SIP OPTIONS Ping 6-19Unified CM SIP Trunks Delayed Offer, Early Offer, and Best Effort Early Offer 6-19

Unified CM SIP Delayed Offer 6-19Unified CM SIP Early Offer 6-20Best Effort Early Offer [Early Offer support for voice and video calls Best Effort (no MTP inserted)] 6-23MTP-Less Early Offer, Best Effort Early Offer, and SME Media Transparency 6-25

Media Termination Points 6-26DTMF Transport over SIP Trunks 6-27Codec Selection over SIP Trunks 6-29

Accept Audio Codec Preferences in Received Offer 6-31Cisco Unified CM and Cisco Unified Border Element SIP Trunk Codec Preference 6-32

SIP Trunk Transport Protocols 6-33Secure SIP Trunks 6-33

Media Encryption 6-33Signalling Encryption 6-33

User Identity and SIP Trunks 6-35Caller ID Presentation and Restriction 6-35Called and Calling Party Number Normalization and SIP Trunks 6-36Reasons for Using Only SIP Trunks in Cisco Collaboration Systems Deployments 6-37Design and Configuration Recommendations for SIP Trunks 6-37

Unified CM Session Management Edition 6-39When to Deploy Unified CM Session Management Edition 6-40Differences Between Unified CM Session Management Edition and Standard Unified CM Clusters 6-41Summary of SIP Trunk Recommendations for Multi-Cluster SME Deployments 6-44

Minor Features of Unified CM SIP Trunks 6-47

SIP Trunk Message Normalization and Transparency 6-50SIP Trunk Normalization 6-50SIP Trunk Transparency 6-51Pre-Loaded Unified CM Normalization and Transparency Scripts 6-52

IP PSTN and IP Trunks to Service Provider Networks 6-53

Cisco Unified Border Element 6-53

IP-PSTN Trunk Connection Models 6-54

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IP PSTN Trunks and Emergency Services 6-56

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 7-9Calls over SIP Trunks 7-10

SIP Trunk MTP Requirements 7-13DTMF Relay on SIP Gateways and Cisco Unified Border Element 7-14

H.323 Trunks and Gateways 7-14H.323 Supplementary Services 7-14H.323 Outbound Fast Connect 7-14DTMF Conversion 7-15DTMF Relay on H.323 Gateways and Cisco Unified Border Element 7-15

CTI Route Points 7-15MTP Usage with a Conference Bridge 7-16MTP Resources 7-16

Trusted Relay Point 7-17

Annunciator 7-17

Cisco RSVP Agent 7-19

Music on Hold 7-19Unicast and Multicast MoH 7-19MoH Selection Process 7-20User and Network Hold 7-21MoH Sources 7-23

Audio File 7-23Fixed Source 7-23

MoH Selection 7-24

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MoH Call Flows 7-24SCCP Call Flows 7-24SIP Call Flows 7-27

Capacity Planning for Media Resources 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 7-40Unified CM MoH Audio Sources 7-41Unicast and Multicast in the Same Unified CM Cluster 7-41Quality of Service (QoS) 7-42Call Admission Control and MoH 7-42

Deployment Models for Music on Hold 7-43Single-Site Campus (Relevant to All Deployments) 7-44Centralized Multisite Deployments 7-44Centralized PSTN Deployments 7-44Multicast MoH from Branch Routers 7-45Distributed Multisite Deployments 7-47Clustering Over the WAN 7-48

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


Collaboration Endpoints Architecture 8-2Cisco Unified Communications Manager (Unified CM) Call Control 8-4Cisco TelePresence Video Communication Server (VCS) Call Control 8-5

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Collaboration 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 IP Phone 8800 Series 8-10Cisco Unified IP Phone 8900 and 9900 Series 8-10Cisco Unified SIP Phone 3900 Series 8-11Cisco DX Series 8-11Cisco IP Phone 7800 Series 8-12Deployment Considerations for Cisco Desk Phones 8-12

Firmware Upgrades 8-12Power Over Ethernet 8-13Quality of Service 8-13SRST and Enhanced SRST 8-14Secure Remote Enterprise Attachment 8-14Intelligent Proximity 8-15

Video Endpoints 8-16Personal Video Endpoints 8-16

Cisco Jabber Desktop Video 8-16Cisco Jabber Video for TelePresence 8-16Cisco Unified IP Phone 8900 and 9900 Series 8-17Cisco DX Series 8-17Cisco TelePresence System EX Series 8-17Cisco TelePresence System 500 and 1100 8-18

Multipurpose Video Endpoints 8-18Cisco TelePresence System MX Series 8-18Cisco TelePresence SX Series 8-19Cisco Telepresence System Integrator C Series 8-19

Immersive Video Endpoints 8-20Cisco TelePresence IX5000 Series 8-20Cisco TelePresence TX9000 Series 8-20Cisco TelePresence TX1300 Series 8-20

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General Deployment Considerations for Video Endpoints 8-21Quality of Service 8-21Inter-VLAN Routing 8-21SRST and Enhanced SRST 8-22Secure Remote Enterprise Attachment 8-22Intelligent Proximity 8-22Video Interoperability 8-23

Software-Based Endpoints 8-25Cisco IP Communicator 8-25Cisco Jabber Desktop Clients 8-25

Softphone Mode of Operation 8-25Deskphone Control Mode of Operation 8-26

General Deployment Considerations for Software-Based Endpoints 8-26Quality of Service 8-26Inter-VLAN Routing 8-27SRST and Enhanced SRST 8-27Secure Remote Enterprise Attachment 8-27

Wireless Endpoints 8-28General Deployment Considerations for Wireless Endpoints 8-29

Network Radio Frequency Design and Site Survey 8-29Security: Authentication and Encryption 8-29Wireless Call Capacity 8-29Bluetooth Support 8-30Quality of Service 8-31SRST and Enhanced SRST 8-31Device Mobility 8-32

Mobile Endpoints 8-32Cisco Jabber for Android and Apple iOS 8-32Cisco WebEx Meetings 8-33Cisco AnyConnect Secure Mobility Client 8-33Deployment Considerations for Mobile Endpoints and Clients 8-33

WLAN Design 8-33Secure Remote Enterprise Attachment 8-34Quality of Service 8-34SRST and Enhanced SRST 8-35Intelligent Proximity 8-35

Cisco Virtualization Experience Media Engine 8-35Deployment Considerations for Cisco Virtualization Experience Media Engine 8-36

Quality of Service 8-36

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SRST and Enhanced SRST 8-36

Third-Party IP Phones 8-36

High Availability for Collaboration Endpoints 8-37Cisco Unified CM Call Control High Availability 8-37Cisco TelePresence VCS Call Control High Availability 8-38

Capacity Planning for Collaboration Endpoints 8-39

Design Considerations for Collaboration Endpoints 8-39

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


Call Processing Architecture 9-2Call Processing Virtualization 9-3Call Processing Hardware 9-4Unified CM Cluster Services 9-5

Cluster Server Nodes 9-6Mixing Unified CM OVA Templates 9-8Cisco Prime License Manager 9-8Intracluster Communications 9-11Intracluster Security 9-12General Clustering Guidelines 9-13

Cisco TelePresence VCS Clustering 9-14

High Availability for Call Processing 9-15Hardware Platform High Availability 9-15Network Connectivity High Availability 9-16Unified CM High Availability 9-16

Call Processing Redundancy 9-17Call Processing Subscriber Redundancy 9-19TFTP Redundancy 9-22CTI Manager Redundancy 9-22Virtual Machine Placement and Hardware Platform Redundancy 9-23

Cisco Business Edition High Availability 9-24Cisco TelePresence VCS High Availability 9-24

Capacity Planning for Call Processing 9-26Unified CME Capacity Planning 9-26Unified CM Capacity Planning 9-26

Unified CM Capacity Planning Guidelines and Endpoint Limits 9-27Megacluster 9-28

Cisco Business Edition Capacity Planning 9-28Cisco TelePresence VCS Capacity Planning 9-29

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Design Considerations for Call Processing 9-30

Computer Telephony Integration (CTI) 9-32CTI Architecture 9-33CTI Applications and Clustering Over the WAN 9-34Capacity Planning for CTI 9-35High Availability for CTI 9-36

CTI Manager 9-36Redundancy, Failover, and Load Balancing 9-36

Implementation 9-38

Integration of Multiple Call Processing Agents 9-38Interoperability of Unified CM and Unified CM Express 9-39

Overview of Interoperability Between Unified CM and Unified CME 9-39Unified CM and Unified CME Interoperability via SIP in a Multisite Deployment with Distributed Call Processing 9-41

Interoperability of Cisco TelePresence VCS with Unified CM 9-43Dial Plan Integration 9-45Design Considerations 9-45

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 10-4High Availability for Deployment Models 10-4Capacity Planning for Deployment Models 10-5

Common Design Criteria 10-5Site-Based Design Guidance 10-6Centralized Services 10-6Distributed Services 10-7Inter-Networking of Services 10-8Geographical Diversity of Unified Communications Services 10-8

Design Characteristics and Best Practices for Deployment Models 10-9Campus Deployments 10-9

Best Practices for the Campus Model 10-11Multisite Deployments with Centralized Call Processing 10-11

Best Practices for the Centralized Call Processing Model 10-15Remote Site Survivability 10-15Voice over the PSTN as a Variant of Centralized Call Processing 10-22

Multisite Deployments with Distributed Call Processing 10-22

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Best Practices for the Distributed Call Processing Model 10-24Leaf Unified Communications Systems for the Distributed Call Processing Model 10-24Unified CM Session Management Edition 10-25

Intercluster Lookup Service (ILS) and Global Dial Plan Replication (GDPR) 10-30Deployments for the Collaboration Edge 10-34

VPN Based Enterprise Access Deployments 10-34VPN-less Enterprise Access 10-35Business-to-Business Communications 10-37IP PSTN Deployments 10-38

Design Considerations for Dual Call Control Deployments 10-40Call Admission Control Considerations in Dual Call Control Deployments 10-41

Multisite Centralized Unified CM Deployments with Distributed Third-Party Call Control 10-41Multisite Centralized Unified CM Deployments with Centralized Third-Party Call Control 10-42

Dial Plan Considerations in Dual Call Control Deployments 10-42

Clustering Over the IP WAN 10-43WAN Considerations 10-44Intra-Cluster Communications 10-45

Unified CM Publisher 10-45Call Detail Records (CDR) and Call Management Records (CMR) 10-46Delay Testing 10-46Error Rate 10-47Troubleshooting 10-47

Local Failover Deployment Model 10-47Unified CM Provisioning for Local Failover 10-52Gateways for Local Failover 10-53Voicemail for Local Failover 10-53Music on Hold and Media Resources for Local Failover 10-53

Remote Failover Deployment Model 10-54

Deploying Unified Communications on Virtualized Servers 10-55Hypervisor 10-55Server Hardware Options 10-56Cisco Unified Computing System 10-56

Cisco UCS B-Series Blade Servers 10-56Cisco UCS C-Series Rack-Mount Servers 10-58

Impact of Virtual Servers on Deployment Models 10-59

Call Routing and Dial Plan Distribution Using Call Control Discovery (CCD) for the Service Advertisement Framework (SAF) 10-59

Services that SAF Can Advertise with Call Control Discovery (CCD) 10-59SAF CCD Deployment Considerations 10-60

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


Types of Conferences 11-2

Cisco Rich Media Conferencing Architecture 11-4Role of Cisco TelePresence Conductor 11-4Role of the TelePresence Server 11-5Role of Cisco TelePresence Management Suite (TMS) 11-5Conference Bridges for Non-Scheduled Conferences 11-6Conference Bridges for Scheduled Conferences 11-7Audio-Only Versus Video Conferencing 11-9Scheduled Versus Non-Scheduled Conferencing 11-10Deployment Considerations 11-11

Design Considerations for Audio and Video Conferencing 11-14Audio Conferencing 11-14

Instant Audio Conference 11-15Meet-Me Audio Conference 11-15Scheduled Audio Conference 11-15Security in Audio Conferences 11-15

Video Conferencing 11-16Meeting Experience 11-17Instant Video Conferences 11-18Permanent Video Conferences 11-20Scheduled Video Conferences 11-22Security in Video Conferences 11-24

Conferencing Resources 11-24Audio Conferencing Resources 11-25Video Conferencing Resources 11-26

High Availability for Cisco Rich Media Conferencing 11-32Media Resource Groups and Lists 11-32Route List and Route Groups 11-33Cisco VCS Conferencing Redundancy 11-34Redundancy with Cisco TelePresence Conductor 11-34

Capacity Planning for Cisco Rich Media Conferencing 11-37Sizing the Conferencing Resources 11-38

Resource Allocation and Allocation Logic 11-38Scalability 11-40

Design Considerations for Cisco Rich Media Conferencing 11-42Cisco Rich Media Conferencing Deployment Models 11-42

Cisco Hosted Solutions 11-42

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Multiple Sites with Centralized Resources 11-43Multiple Sites with Distributed Resources 11-44

Design Recommendations 11-45Latency 11-45Cascading 11-45MTP Used with a Conference Bridge 11-45Video Transcoding and Video Switching 11-46

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 13-3Cisco 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 13-11Enhanced Location CAC Design and Deployment Recommendations and Considerations 13-13

Intercluster Enhanced Location CAC 13-14LBM Hub Replication Network 13-15Common Locations (Shared Locations) and Links 13-16Shadow Location 13-18Location and Link Management Cluster 13-19Intercluster Enhanced Location CAC Design and Deployment Recommendations and Considerations 13-21

Enhanced Location CAC for TelePresence Immersive Video 13-22Video Call Traffic Class 13-22Endpoint Classification 13-23SIP Trunk Classification 13-23

Examples of Various Call Flows and Location and Link Bandwidth Pool Deductions 13-25Video Bandwidth Utilization and Admission Control 13-29Upgrade and Migration from Location CAC to Enhanced Location CAC 13-34Extension Mobility Cross Cluster with Enhanced Location CAC 13-36

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Design Considerations for Call Admission Control 13-36Dual Data Center Design 13-37MPLS Clouds 13-38

Call Admission Control Design Recommendations for Video Deployments 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 13-46

Recommendations and Design Considerations 13-46

Design Recommendations for Cisco Expressway Deployments with Enhanced Location CAC 13-49Recommendations and Design Considerations 13-49Design and Deployment Best Practices for Cisco Expressway VPN-less Access with Enhanced Location CAC 13-53

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 14-5

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

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

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

Calling Party Transformations on IP Phones 14-14Support for + Dialing on the Phones 14-15User Input on SCCP Phones 14-15User Input on Type-A SIP Phones 14-16User Input on Type-B SIP Phones 14-18SIP Dial Rules 14-19Call Routing in Unified CM 14-22Support for + Sign in Patterns 14-24

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Directory URIs 14-24Translation Patterns 14-25External Routes in Unified CM 14-26Pattern Urgency 14-37Calling and Called Party Transformation Patterns 14-39Incoming Calling Party Settings (per Gateway or Trunk) 14-41Incoming Called Party Settings (per Gateway or Trunk) 14-41Calling Privileges in Unified CM 14-42Global Dial Plan Replication 14-48Routing of SIP Requests in Unified CM 14-49

Cisco TelePresence Video Communication Server 14-52Cisco VCS Addressing Schemes: SIP URI, H.323 ID, and E.164 Alias 14-53Cisco VCS Addressing Zones 14-53Cisco VCS Pattern Matching 14-54Cisco VCS Routing Process 14-55

Recommended Design 14-55Globalized Dial Plan Approach on Unified CM 14-55

Local Route Group 14-56Support for + Dialing 14-57Calling Party Number Transformations 14-57Called Party Number Transformations 14-58Incoming Calling Party Settings (per Gateway) 14-58Logical Partitioning 14-59Localized Call Ingress 14-60Globalized Call Routing 14-62Localized Call Egress 14-62Call Routing in a Globalized Dial Plan 14-64Benefits of the Design Approach 14-69Dial Plan with Global Dial Plan Replication (GDPR) 14-71

Integrating Unified Communications Manager and TelePresence Video Communication Server 14-73

+E.164 Numbering Plan 14-74Alias Normalization and Manipulation 14-74Implementing Endpoint SIP URIs 14-77

Special Considerations 14-78Automated Alternate Routing 14-78

Establish the PSTN Number of the Destination 14-79Prefix the Required Access Codes 14-79Voicemail Considerations 14-80Select the Proper Dial Plan and Route 14-81

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Device Mobility 14-82Extension Mobility 14-83Special Considerations for Cisco Unified Mobility 14-85

Remote Destination Profile 14-86Remote Destination Profile's Rerouting Calling Search Space 14-86Remote Destination Profile's Calling Search Space 14-86Remote Destination Profile's Calling Party Transformation CSS and Transformation Patterns 14-87Application Dial Rules 14-88

Time-of-Day Routing 14-89Logical Partitioning 14-90

Logical Partitioning Device Types 14-91Geolocation Creation 14-91Geolocation Assignment 14-92Geolocation Filter Creation 14-92Geolocation Filter Assignment 14-92Logical Partitioning Policy Configuration 14-92Logical Partitioning Policy Application 14-93

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


911 Emergency Services Architecture 15-2Public Safety Answering Point (PSAP) 15-2Selective Router 15-3Automatic 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

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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 15-16Cisco Emergency Responder and Video 15-16Cisco Emergency Responder and Off-Premises Endpoints 15-17Test 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 Directory Integration and Identity Management 16-1


What is Directory Integration? 16-3

Directory Access for Unified Communications Endpoints 16-4

Directory Integration with Unified CM 16-6Cisco Unified Communications Directory Architecture 16-7LDAP Synchronization 16-10

Synchronization Mechanism 16-14Automatic Line Creation 16-16Security Considerations 16-18Design Considerations for LDAP Synchronization 16-18Additional Considerations for Microsoft Active Directory 16-19Unified CM Multi-Forest LDAP Synchronization 16-21

LDAP Authentication 16-21Design Considerations for LDAP Authentication 16-23Additional Considerations for Microsoft Active Directory 16-24

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

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High Availability 16-29Capacity Planning for Unified CM Database Synchronization 16-30

Directory Integration for VCS Registered Endpoints 16-31

Identity Management Architecture Overview 16-31

Single Sign-On (SSO) 16-32SAML Authentication 16-34Authentication Mechanisms for Web-Based Applications 16-38OAuth 2.0 16-39SSO for Jabber and Other Endpoints 16-40SSO with Collaboration Edge 16-43Understanding Session and Token Expiration Timers 16-45Design Considerations for SSO 16-46

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 18-2High 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 18-11Media Resources 18-14

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 18-19

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Design 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 18-35WebDialer 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 18-46Design Considerations for Attendant Consoles 18-46

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


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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 19-23Overview 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 19-31

Best Practices for Voice Messaging 19-32Best Practices for Deploying Cisco Unity Connection with Unified CM 19-32

Managing Bandwidth 19-32Native Transcoding Operation 19-33Cisco Unity Connection Operation 19-34Integration with Cisco Unified CM 19-35Integration with Cisco Unified CM Session Management Edition 19-36IPv6 Support with Cisco Unity Connection 19-43Single Inbox with Cisco Unity Connection 19-43

Best Practices for Deploying Cisco Unity Express 19-46Voicemail Integration with Unified CM 19-46Cisco Unity Express Codec and DTMF Support 19-47JTAPI, SIP Trunk and SIP Phone Support 19-47

Third-Party Voicemail Design 19-48

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


Presence 20-2On-Premises Cisco IM and Presence Components 20-3On-Premises Cisco IM and Presence Service User 20-4Single Sign-On (SSO) Solutions 20-4

Phone-Specific Presence and Busy Lamp Field 20-5Unified CM Presence with SIP 20-5Unified CM Presence with SCCP 20-7Unified CM Speed Dial Presence 20-7Unified CM Call History Presence 20-8Unified CM Presence Policy 20-8

Unified CM Subscribe Calling Search Space 20-8Unified CM Presence Groups 20-8

Unified CM Presence Guidelines 20-9

User Presence: Cisco IM and Presence Architecture 20-9On-Premises Cisco IM and Presence Service Cluster 20-10On-Premises Cisco IM and Presence Service High Availability 20-13On-Premises Cisco IM and Presence Service Deployment Models 20-13

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

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

Single-Cluster Deployment 20-18Intercluster Deployment 20-20Clustering Over the WAN 20-21Federated Deployment 20-22Instant Messaging Only Deployment 20-26

On-Premises Cisco IM and Presence Service SAML SSO for Jabber 20-27

On-Premises Cisco IM and Presence Service Enterprise Instant Messaging 20-27Managed File Transfer 20-28On-Premises Cisco IM and Presence Service Message Archiving and Compliance 20-30Instant Messaging Storage Requirements 20-32On-Premises Cisco IM and Presence Service Calendar Integration 20-33Outlook Web Access Calendar Integration 20-34Exchange Web Services Calendar Integration 20-36On-Premises Cisco IM and Presence Service Mobility Integration 20-37On-Premises Cisco IM and Presence Service Third-Party Open API 20-38Design Considerations for On-Premises Cisco IM and Presence Service 20-40

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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 20-46Security 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 21-5Jabber Desktop Clients Dial Plan Considerations 21-6Jabber Desktop Clients Audio and Video Media 21-7Jabber Desktop Clients Audio, Video and Web Conferencing Services 21-8Jabber Desktop Clients Contact Management 21-9

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

Common Deployment Models for Jabber Clients 21-12On-Premises Deployment Model 21-12Cloud-Based Deployment Model 21-14Hybrid Cloud-Based and On-Premises Deployment Model 21-15

Client-Specific Design Considerations 21-16Cisco Jabber for Windows 21-16

Client Launch Sequence 21-16Contact Sources 21-17Video Rate Adaptation and Resolution 21-17

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Extend and Connect 21-18Cisco Jabber for Mac 21-18

Client 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 Virtualization Experience Media Engine 21-26Network Considerations (Call Admission Control, Quality of Service, and Bandwidth) 21-27Capacity Planning for Cisco Virtualization Experience Media Engine 21-27High Availability for Cisco Virtualization Experience Media Engine 21-27Design Considerations for Cisco Virtualization Experience Media Engine 21-28

Cisco IP Communicator 21-28

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

Security 22-8Scheduling 22-8User Profile 22-9

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

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Network Traffic Planning 22-12Design Considerations 22-12

Cisco WebEx Meetings Server 22-13Architecture 22-13Cisco Unified CM Integration 22-16Legacy PBX Integration 22-17IPv6 Support 22-17High Availability 22-18Virtual IP Address 22-18Multiple Data Center Design 22-18Capacity Planning 22-19Storage Planning 22-19Network Traffic Planning 22-19Design Consideration 22-20Reference Document 22-21

Cisco Collaboration Meeting Room Hybrid 22-21Architecture 22-21Scheduling 22-24Single Sign On 22-25Security 22-25Deployment Options 22-26

WebEx Audio Using SIP 22-26WebEx Audio Using PSTN 22-26Teleconferencing Service Provider Audio 22-27

High Availability 22-29Capacity Planning 22-29Network Traffic Planning 22-30Design Considerations 22-30

Cisco Collaboration Meeting Room Cloud 22-31Architecture 22-31Security 22-34Audio Deployment Options 22-35High Availability 22-35Capacity Planning 22-35Network Traffic Planning 22-36Design Considerations 22-36

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


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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) 23-8

Campus Enterprise Mobility High Availability 23-9Capacity 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

VPN Secure Remote Connectivity 23-28Router-Based Remote VPN Connectivity 23-28Client-Based Secure Remote Connectivity 23-28Device Mobility and VPN Remote Enterprise Connectivity 23-29VPN-Less Secure Remote Connectivity 23-30Cisco Unified Border Element Phone Proxy 23-30Cisco Expressway 23-31Cisco TelePresence Video Communication Server Expressway 23-33

Remote Enterprise Mobility High Availability 23-33Capacity Planning for Remote Enterprise Mobility 23-34Design Considerations for Remote Enterprise Mobility 23-34

Mobility Beyond the Enterprise 23-34Cisco Unified Mobility 23-36Mobile Connect 23-38

Mobile Connect Functionality 23-38Mobile Connect Architecture 23-46

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High Availability for Mobile Connect 23-47Cisco TelePresence FindMe 23-48Mobile Voice Access and Enterprise Feature Access 23-48

Mobile Voice Access IVR VoiceXML Gateway URL 23-49Mobile Voice Access Functionality 23-49Enterprise Feature Access with Two-Stage Dialing Functionality 23-52Mobile Voice Access and Enterprise Feature Access Architecture 23-56High Availability for Mobile Voice Access and Enterprise Feature Access 23-57

Designing Cisco Unified Mobility Deployments 23-57Dial Plan Considerations for Cisco Unified Mobility 23-57Guidelines and Restrictions for Unified Mobility 23-62Capacity Planning for Cisco Unified Mobility 23-62Design Considerations for Cisco Unified Mobility 23-63

Cisco Mobile Clients and Devices 23-65Cisco Mobile Clients and Devices Architecture 23-66Deployment Considerations for Cisco Mobile Clients and Devices 23-79High Availability for Cisco Mobile Clients and Devices 23-95Capacity Planning for Cisco Mobile Clients and Devices 23-96Design Considerations for Cisco Mobile Clients and Devices 23-97

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


Cisco Contact Center Architecture 24-2Cisco Unified CM Call Queuing 24-2Cisco Unified Contact Center Enterprise 24-3Cisco Unified Customer Voice Portal 24-4Cisco Unified Contact Center Express 24-6Cisco SocialMiner 24-6Administration and Management 24-6Reporting 24-7Multichannel Support 24-7Recording and Silent Monitoring 24-7

Contact Center Deployment Models 24-8Single-Site Contact Center 24-8Multisite Contact Center with Centralized Call Processing 24-8Multisite Contact Center with Distributed Call Processing 24-10Clustering Over the IP WAN 24-11

Design Considerations for Contact Center Deployments 24-13High Availability for Contact Centers 24-13

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Bandwidth, Latency, and QoS Considerations 24-14Bandwidth Provisioning 24-14Latency 24-15QoS 24-15

Call Admission Control 24-15Integration with Unified CM 24-15Other Design Considerations for Contact Centers 24-16

Capacity Planning for Contact Centers 24-17

Contact Center Solutions for Vertical Industries 24-18Cisco Remote Expert Smart Solution 24-18

Network Management Tools 24-19

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


Types of Monitoring and Recording Solutions 25-1SPAN-Based Solutions 25-2Unified CM Call Monitoring and Recording 25-3

Cisco Unified IP Phones-Based Call Monitoring and Recording 25-4Cisco Unified CM Network-Based Recording 25-5

Cisco MediaSense 25-8Deployment of Cisco MediaSense 25-8

Agent Desktop 25-13Cisco TelePresence Content Server 25-13

Cisco TelePresence Content Server Deployments 25-14

Capacity Planning for Monitoring and Recording 25-16

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 Solution Sizing Guidance 27-1


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

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

Traffic Engineering 27-5Definitions 27-5Voice Traffic 27-6Contact 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 27-12

Using the VXI Sizing Tool 27-13

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

Server Node and Cluster Maximums 27-14Deployment Options 27-14Endpoints 27-16Cisco Collaboration Clients and Applications 27-17Call Traffic 27-21Dial Plan 27-22Applications and CTI 27-23Media Resources 27-28LDAP Directory Integration 27-31

Cisco Unified CM Megacluster Deployment 27-32Cisco IM and Presence 27-33Emergency Services 27-34Cisco Expressway 27-35Gateways 27-37

Gateway Groups 27-37PSTN Traffic 27-37Gateway Sizing for Contact Center Traffic 27-38Voice Activity Detection (VAD) 27-38Codec 27-39Performance Overload 27-39Performance Tuning 27-39Additional Information 27-40

Voice Messaging 27-41

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Collaborative Conferencing 27-42Sizing Guidelines for Audio Conferencing 27-43Factors Affecting System Sizing 27-43Sizing Guidelines for Video Conferencing 27-44Impact on Unified CM 27-44Cisco WebEx Meetings Server 27-44

Cisco Prime Collaboration Management Tools 27-47Cisco Prime Collaboration Provisioning 27-47Cisco Prime Collaboration Assurance 27-47Cisco Prime Collaboration Analytics 27-47

Sizing for Standalone Products 27-48Cisco Unified Communications Manager Express 27-48Cisco Business Edition 27-48

Busy Hour Call Attempts (BHCA) for Cisco Business Edition 27-49Cisco Unified Mobility for Cisco Business Edition 6000 27-51

C H A P T E R 28 Cisco Collaboration System Migration 28-1


Coexistence or Migration of Solutions 28-2

Migration Prerequisites 28-3

Cisco Collaboration System Migration 28-3Phased Migration 28-3Parallel Cutover 28-3Cisco Collaboration System Migration Examples 28-4Summary of Cisco Collaboration System Migration 28-5

Centralized Deployment 28-5

Which Cisco Collaboration Service to Migrate First 28-6

Migrating Video Devices to Unified CM 28-6

Migrating Licenses to Cisco Collaboration System Release 10.x 28-7License Migration with Cisco Global Licensing Operations (GLO) 28-7

Cisco Prime License Manager 28-9Types of License Migrations 28-10Considerations for Migrating Pre-9.x Licenses to Unified CM 10.x 28-10

Using Cisco Prime Collaboration Deployment for Migration from Physical Servers to Virtual Machines 28-11

Cisco Prime Collaboration Deployment Migration Types 28-11Cisco Prime Collaboration Deployment Migration Prerequisites 28-11Simple Migration 28-12

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Network Migration 28-12

Migrating Video Endpoints from Cisco VCS to Unified CM 28-12

Migrating from H.323 to SIP 28-13Migrating Trunks from H.323 to SIP 28-13Migrating Gateways from H.323 to SIP 28-13

Migrating Endpoints from SCCP to SIP 28-14

SIP URI Dialing and Directory Numbers 28-14

USB Support with Virtualized Unified CM 28-15

On-Premises Cisco IM and Presence Service Migration 28-16

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


Cisco Prime Collaboration 29-2Failover and Redundancy 29-3Cisco Prime Collaboration Server Performance 29-3

Network Infrastructure Requirements for Cisco Unified Network Management 29-4

Assurance 29-4Assurance Design Considerations 29-6

Call Quality Monitoring (Service Experience) 29-7Voice Quality Measurement 29-8Cisco 1040 Sensor Voice Quality Monitoring 29-8

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

Unified CM Call Quality Monitoring 29-10Cisco Network Analysis Module (NAM) 29-10Comparison of Voice Quality Monitoring Methods 29-11Trunk Utilization 29-11Failover and Redundancy 29-11Voice Monitoring Capabilities 29-12Assurance Ports and Protocol 29-12Bandwidth Requirements 29-13

Analytics 29-13Analytics Server Performance 29-14

Provisioning 29-14Provisioning Concepts 29-16Best Practices 29-17Prime Collaboration Design Considerations 29-18Redundancy and Failover 29-19

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Provisioning Ports and Protocol 29-19

Prime Collaboration and Medianet 29-19

Cisco TelePresence Management Suite (TMS) 29-23Calendaring Options 29-23Reporting 29-24Management 29-24

Endpoint and Infrastructure Management 29-24Provisioning 29-25Phone books 29-25Maintenance and Monitoring 29-26

Additional Tools 29-26Cisco Unified Analysis Manager 29-26Cisco Unified Reporting 29-27

Integration with Cisco Unified Communications Deployment Models 29-28Campus 29-28Multisite WAN with Centralized Call Processing 29-29Multisite WAN with Distributed Call Processing 29-31Clustering over the WAN 29-32

G L O S S A R Y

I N D E X

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Preface

Revised: January 15, 2015; OL-30952-03

This document provides design considerations and guidelines for deploying Cisco Unified Communications and Collaboration solutions, including Cisco Unified Communications Manager 10.x, Cisco TelePresence System, and other components of Cisco Collaboration System Release 10.x.

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-techinfo

http://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.html

http://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.html

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

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http://www.cisco.com/go/unified-techinfohttp://www.cisco.com/en/US/products/sw/voicesw/index.htmlhttp://www.cisco.com/en/US/products/sw/voicesw/ps556/tsd_products_support_series_home.htmlhttp://www.cisco.com/en/US/products/sw/voicesw/products.htmlhttp://www.cisco.com/en/US/products/ps11337/tsd_products_support_series_home.htmlhttp://www.cisco.com/go/designzonehttp://www.cisco.com/go/ucsrndhttp://www.cisco.com/en/US/products/ps7060/index.htmlhttp://www.cisco.com

New or Changed Information for This Release

Note Unless stated otherwise, the information in this document applies to all Cisco Collaboration Systems 10.x releases.

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 Collaboration SRND and the Cisco Unified Communications System SRND, it has been reorganized and updated extensively to reflect more accurately the architecture of the current Cisco Collaboration Systems Release. 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/ucsrnd

Visit 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.

Obtaining Documentation and Submitting a Service RequestFor information on obtaining documentation, using the Cisco Bug Search Tool (BST), submitting a service request, and gathering additional information, see Whats New in Cisco Product Documentation at: http://www.cisco.com/c/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.

Revision Date Document Part Number Comments

January 15, 2015 OL-30952-03 Updates for Cisco Collaboration System Release 10.6. For details, in each chapter see Whats New in This Chapter.

April 26, 2014 OL-30952-02 Periodic update of various chapters. For details, in each chapter see Whats New in This Chapter.

November 19, 2013 OL-30952-01 Initial version of this document for Cisco Collaboration System Release 10.0.

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http://www.cisco.com/go/ucsrndhttp://www.cisco.com/c/en/us/docs/general/whatsnew/whatsnew.html

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:

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

Tip Means the following information will help you solve a problem. The tips information might not be troubleshooting or even an action, but could be useful information, similar to a Timesaver.

Caution Means reader be careful. In this situation, you might perform an action that could result in equipment damage or loss of data.

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.

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

Timesaver Means the described action saves time. You can save time by performing the action described in the paragraph.

Warning IMPORTANT SAFETY INSTRUCTIONS

This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device.

SAVE THESE INSTRUCTIONS

Warning Statements using this symbol are provided for additional information and to comply with regulatory and customer requirements.

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C H A P T E R 1

Introduction

Revised: November 19, 2013; OL-30952-03

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.

Cisco End-to-End Collaboration SolutionsCisco Collaboration Technology comprises an array of products to build complete end-to-end collaboration solutions for virtually any size or type of enterprise. Cisco Collaboration Solutions consists of the following main elements, illustrated in conceptual form in Figure 1-1:

Collaboration Infrastructure, page 1-2

Collaboration Applications and Services, page 1-3

The Collaboration User Experience, page 1-3

1-1Cisco Collaboration System 10.x SRND

Chapter 1 IntroductionCisco End-to-End Collaboration Solutions

Figure 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 Collaboration Systems Release 10.x is deployed using virtualization with the VMware vSphere ESXi Hypervisor. The Cisco Collaboration application nodes are deployed as virtual machines that can run as single or multiple application nodes on a server. These virtualized applications can provide collaboration services for small and medium businesses, and they can scale up to handle large global enterprises such as Cisco.

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 andEnvironments

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

FundamentalTechnologies

Deployment Models

Management

Security

QoS

Standards

Medianet

On Premises

Hosted or Managed

Cloud

3486

78


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Chapter 1 IntroductionCisco End-to-End Collaboration Solutions

Collaboration 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.


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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.


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How to Use this DocumentThis document is organized into four main parts:

System Components and Architecture

The 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 Routing

The 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 Applications

The 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 Management

The 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.


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After 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 3-44

Wireless LAN Infrastructure

Design Considerations for Voice and Video over WLAN, page 3-59

WLAN Quality of Service (QoS), page 3-65

Cisco Collaboration Security

Access Security, page 4-6

Gateways, page 5-1

All sections

Cisco Unified CM Trunks

Unified CM Trunks Solution Architecture, page 6-3

A Comparison of SIP and H.323 Trunks, page 6-4

SIP Trunks Overview, page 6-6

Session Initiation Protocol (SIP) Operation, page 6-7

Unified CM SIP Trunk Features and Operation, page 6-15

Unified CM Session Management Edition, page 6-39

IP PSTN and IP Trunks to Service Provider Networks, page 6-53

Cisco Unified Border Element, page 6-53

Media Resources

Media Resources Architecture, page 7-2

Annunciator, page 7-17

Music on Hold, page 7-19

Design Considerations for Media Resources, page 7-37


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Call Processing

Call Processing Architecture

Call Processing Hardware, page 9-4

Unified CM Cluster Services, page 9-5

Design Considerations for Call Processing, page 9-30

Collaboration Deployment Models

Deploying Unified Communications and Collaboration, page 10-2

Deployment Model Architecture, page 10-3

Common Design Criteria, page 10-5

Campus Deployments, page 10-9

Multisite Deployments with Centralized Call Processing, page 10-11

Multisite with Distributed Call Processing

Best Practices for the Distributed Call Processing Model, page 10-24

Leaf Unified Communications Systems for the Distributed Call Processing Model, page 10-24

Cisco Rich Media Conferencing

Types of Conferences, page 11-2

Cisco Rich Media Conferencing Architecture, page 11-4

Design Considerations for Cisco Rich Media Conferencing, page 11-42

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 14-55

LDAP Directory Integration

What is Directory Integration?, page 16-3

Directory Access for Unified Communications Endpoints, page 16-4

Directory Integration with Unified CM

Cisco Unified Communications Directory Architecture, page 16-7

LDAP Synchronization, page 16-10

LDAP Authentication, page 16-21


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Cisco 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 Models

Centralized Messaging and Centralized Call Processing, page 19-7

Cisco Unity Connection Survivable Remote Site Voicemail, page 19-8

Distributed Messaging with Centralized Call Processing, page 19-11

Combined Messaging Deployment Models, page 19-14

Messaging Redundancy

Cisco Unity Connection, page 19-18

Centralized Messaging with Distributed Unified CM Clusters, page 19-22

Best Practices for Voice Messaging

Best Practices for Deploying Cisco Unity Connection with Unified CM

Managing Bandwidth, page 19-32

Native Transcoding Operation, page 19-33

Cisco Unity Connection Operation, page 19-34

Integration with Cisco Unified CM, page 19-35

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.com

This 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

http://www.cisco.com/go/designzone


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http://www.cisco.comhttp://www.cisco.com/go/designzone

P A R T 1

Collaboration System Components and Architecture

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C H A P T E R 2

Overview of Cisco Collaboration System Components and Architecture

Revised: November 19, 2013; OL-30952-03

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:

Network Infrastructure, page 3-1

This chapter describes the requirements of the network infrastructure needed to build a Cisco Unified Communications and Collaboration System in an enterprise environment. The sections in this chapter describe the network infrastructure features as they relate to LAN, WAN, and wireless LAN infrastructures. The chapter treats the areas of design, high availability, quality of service, and bandwidth provisioning as is pertinent to each infrastructure.


Chapter 2 Overview of Cisco Collaboration System Components and Architecture

Cisco Collaboration Security, page 4-1

This 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 5-1

This 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 6-1

This 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 trunks, codecs, and supplementary services over these trunks.

Media Resources, page 7-1

This chapter examines components classified as Unified Communications and Collaboration media resources. Digital signal processors (DSPs) and their deployment for call termination, conferencing and transcoding capabilities, and music on hold (MoH) are all discussed. Media termination points (MTPs), how they function, and design considerations with SIP and H.323 trunks are also covered. In addition, design considerations surrounding Trusted Relay Points, RSVP Agents, annunciator, MoH, and secure conferencing are included in the chapter.

Collaboration Endpoints, page 8-1

This chapter discusses the various types of Unified Communications and Collaboration endpoints available in the Cisco portfolio. Endpoints covered include software-based endpoints, wireless and hard-wired desk phones, video endpoints, and analog gateways and interface modules for analog connectivity based on time division multiplexing (TDM).

Call Processing, page 9-1

This chapter examines the various types of call processing applications and platfor

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