Cisco Systems OL-14619-01 manual Deployment Models

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C H A P T E R 4

Designing a Cisco Unity System with Exchange as the Message Store

This chapter focuses on using Exchange as the message store and Active Directory as the directory for Cisco Unity. All references to Exchange apply to the currently supported versions of Exchange—Exchange 2007 and Exchange 2003—unless specified otherwise. Exchange 2000 is supported only for upgrades from Cisco Unity 4.x and is, therefore, not discussed in this design guide.

See the following topics:

•Deployment Models, page 4-1

•Physical Placement and Network Infrastructure, page 4-4

•Considerations for Customer-Provided Infrastructure, page 4-5

•Considerations for Cisco-Provided, Dedicated Infrastructure, page 4-9

Deployment Models

You can deploy Cisco Unity by using customer-provided infrastructure or by using dedicated,

Cisco-provided infrastructure.

With customer-provided infrastructure, Cisco Unity can be configured either as Unified Messaging or as Voice Messaging. Cisco Unity is a part of the messaging environment, it services subscribers who are homed on existing Exchange e-mail servers, and it uses existing DC/GCs. For more information, see the following sections:

•Unified Messaging with Customer-Provided Infrastructure, page 4-2

•Mixed Unified Messaging and Voice Messaging with Customer-Provided Infrastructure, page 4-2

•Voice Messaging with Customer-Provided Infrastructure, page 4-3

With dedicated, Cisco-provided infrastructure, Cisco Unity is configured as Voice Messaging. Each Cisco Unity subscriber requires a separate Active Directory user account in a dedicated forest and a separate Exchange mailbox that holds only Cisco Unity voice messages on a separate, dedicated Exchange server that homes only Cisco Unity voice messages. For more information, see the “Voice Messaging with Cisco-Provided, Dedicated Infrastructure” section on page 4-2.

If the customer has more than one data center, you can combine deployment models. For more information, see the “Multi-Site WAN with Distributed Messaging” section on page 4-3.

Design Guide for Cisco Unity Release 5.x

	OL-14619-01	4-1

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Contents Americas Headquarters Design Guide for Cisco UnityDesign Guide for Cisco Unity Release N T E N T S Workstations Authentication Centralized Voice Messaging Configuration Viii Document Conventions AudienceSupport Policy for Optional Third-Party Software Cisco Product Security Overview Xii Design Guide Overview Product Area Design or Feature DocumentationDesign Guide for Cisco Unity Bridge at Page Design Guide Overview Design Guide for Cisco Unity Release How Cisco Unity Works Cisco Unity ConceptsVoice Messaging Unified MessagingHardware Components of a Cisco Unity System Cisco Unity Supported Platforms List at One or More Cisco Unity ServersNetwork Connection Optional for Some Configurations Software Components of a Cisco Unity System Where Cisco Unity Stores DataVoice Messages Are Stored in Domino or Exchange DominoExchange Enabling Cisco Unity Servers to Communicate with One Another Networking Guide for Cisco Unity at Some Configuration Settings Are Stored in the Registry Availability of Network Resources Name ResolutionAvailability of Message Store Servers Domain Controller Access and AvailabilitySizing and Scaling Cisco Unity Servers Using Firewalls with Cisco UnityNumber of Voice Ports Storage Capacity for Voice MessagesHow Codecs Affect the File Size of Voice Messages Audio CodecsInteroperability Among Multiple Voice-Messaging Systems TTS, TTY, Pocket PCs, and Hand-Held ComputersAudio Codec Quality RatingDeployment Models Unified Messaging with Customer-Provided Infrastructure Multi-Site WAN with Distributed Messaging Voice Messaging with Customer-Provided InfrastructurePhysical Placement and Network Infrastructure Active Directory Considerations Considerations for Customer-Provided InfrastructureDesign Guide for Cisco Unity Release Exchange Considerations All Versions Exchange Considerations That Apply Only Exchange Considerations for Cisco-Provided, Dedicated Infrastructure OL-14619-01 Overview of Cisco Unity with Domino and Notes Domino Address Book Terminology Maximum Number of Cisco Unity SubscribersElement Name Changes That csAdmin Makes to the Domino Address BookChanges That csClient Makes to the Mail File Windows Domains and Domino Domains Server PlacementActive Directory Accounts and Permissions AuthenticationDomino Permissions Cisco Unity Subscribers and Domino UsersDomino Clusters Cisco Unity and the Domino Address Book Client Access LicensesMessage Routing Backing Up and Restoring DataUnified Messaging Configurations Unified Messaging, No Domino ClusterServers Requirements and Recommendations Voice Messaging Configuration Criteria for a Supported ConfigurationUnified Messaging, Domino Cluster Deploying Cisco Unity for Lotus Domino Network Services Administrative Access and ControlDeployment Tasks for Unified Messaging Configurations Establishing Support PoliciesOperational Tasks Design Guide for Cisco Unity Release Overview Integrating Cisco Unity with the Phone SystemHow an Integration Works Lines and Cables to Make Physical Connections Integration with Cisco Unified Communications ManagerDigital Integration with Digital Pimg Units Dtmf Integration with Analog Pimg Units LAN/WAN Timg IntegrationSerial Integration with Voice Cards Dtmf Integration with Voice CardsConnections for a Serial Integration by Using Voice Cards Settings in the Phone System and in Cisco UnityCall Control General Integration Issues Sccp SIP FeatureIntegrating Cisco Unity with the Phone System Option Considerations Description Cisco Unified Communications Manager Security FeaturesDescription Setting Effect When Data Is EncryptedDisabling and Re-Enabling Security Settings for Individual Voice Messaging PortsPacketization Sccp Integrations Only Sccp SIP Cisco 11 Cisco Unified Communications Manager Fallback with Pstn Cisco Unity to a branch office will fail Integrating by Using SIP Supported SIP Integrations Cisco Unity Failover with SIP TrunksSIP Compliance Description of Pimg Integrations Dtmf Integration with Analog Pimg Units Description of Timg Integrations Firmware Updates Serial Integrations Setup and ConfigurationCisco Unity Failover Increasing Port CapacityMultiple Integration Support/Branch Office Consolidation Cisco Unity FailbackIntegrating with Multiple Phone Systems Requirements for Integrations with Multiple Phone Systems Using Sccp Phone Systems with Other IntegrationsAlternate Extensions Optional Integration FeaturesReasons to Use Alternate Extensions How Alternate Extensions WorkMWIs for Extensions on a Non-Integrated Phone System Alternate MWIsCentralized Voice Messaging OL-14619-01 OL-14619-01 Failover Cisco Unity Failover and Standby RedundancyStandby Redundancy Cisco Unity Failover and Standby Redundancy Cisco Unity Failover and Standby Redundancy Pstn WAN Diagram of a Standby Redundancy ConfigurationOL-14619-01 Voice-Recognition Access to Cisco Unity OL-14619-01 Migrating to Cisco Unity from Another Voice-Messaging System Migrating to Cisco Unity from Another Voice-Messaging System D E IN-2 IN-3 IN-4