Cisco Systems OL-14619-01 manual Description of Pimg Integrations

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Chapter 6 Integrating Cisco Unity with the Phone System

Integrating with Circuit-Switched Phone Systems by Using PIMG or TIMG Units

Integrating with Circuit-Switched Phone Systems by Using PIMG or TIMG Units

Cisco Unity can integrate with circuit-switched phone systems by using the Dialogic Media Gateway (PIMG or TIMG units) between circuit-switched phone systems and IP networks.

For a list of circuit-switched phone systems currently supported with Cisco Unity using PIMG and TIMG integrations, see the “Supported Phone System Integrations” section of Supported Hardware and Software, and Support Policies for Cisco Unity Release 5.x. at http://www.cisco.com/en/US/products/sw/voicesw/ps2237/prod_installation_guides_list.html.

Description of PIMG Integrations

The PIMG integration uses one or more PIMG units between the circuit-switched phone systems and IP network. On the circuit-switched phone system side, there are both digital (feature-set) and analog interfaces; the interface used will depend on the phone system to which Cisco Unity is connected. On the IP side, there is a SIP interface, which is how Cisco Unity communicates with the PIMG gateway. To Cisco Unity, the integration is essentially a SIP integration. Cisco Unity communicates with the PIMG gateway over the IP network using SIP and RTP protocols. The PIMG gateway communicates with the circuit-switched phone system over the phone network using phone system-specific protocols (digital, analog, serial). Note that there are digital integrations for circuit-switched phone systems from several vendors, which are tighter integrations than the Cisco Unity analog integrations using voice cards.

Digital Integration with Digital PIMG Units

The phone system sends call information, MWI requests, and voice connections through the digital lines, which connect the phone system to the PIMG units. The PIMG units communicate with the Cisco Unity server through the LAN or WAN by using Session Initiation Protocol (SIP). Figure 6-12shows the connections for a digital integration by using digital PIMG units.

Figure 6-12 Connections for a Digital Integration by Using Digital PIMG Units

Phone system

Additional

PIMG units as needed

PIMG unit

LAN/WAN PIMG unit

Digital lines

Network connections

Cisco Unity server

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Contents Design Guide for Cisco Unity Americas HeadquartersDesign Guide for Cisco Unity Release N T E N T S Workstations Authentication Centralized Voice Messaging Configuration Viii Audience Document ConventionsSupport Policy for Optional Third-Party Software Cisco Product Security Overview Xii Product Area Design or Feature Documentation Design Guide OverviewDesign Guide for Cisco Unity Bridge at Page Design Guide Overview Design Guide for Cisco Unity Release Cisco Unity Concepts How Cisco Unity WorksUnified Messaging Voice MessagingHardware Components of a Cisco Unity System One or More Cisco Unity Servers Cisco Unity Supported Platforms List atNetwork Connection Optional for Some Configurations Where Cisco Unity Stores Data Software Components of a Cisco Unity SystemVoice 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 Name Resolution Availability of Network ResourcesDomain Controller Access and Availability Availability of Message Store ServersUsing Firewalls with Cisco Unity Sizing and Scaling Cisco Unity ServersStorage Capacity for Voice Messages Number of Voice PortsAudio Codecs How Codecs Affect the File Size of Voice MessagesTTS, TTY, Pocket PCs, and Hand-Held Computers Interoperability Among Multiple Voice-Messaging SystemsAudio Codec Quality RatingDeployment Models Unified Messaging with Customer-Provided Infrastructure Voice Messaging with Customer-Provided Infrastructure Multi-Site WAN with Distributed MessagingPhysical Placement and Network Infrastructure Considerations for Customer-Provided Infrastructure Active Directory ConsiderationsDesign 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 Maximum Number of Cisco Unity Subscribers Domino Address Book TerminologyChanges That csAdmin Makes to the Domino Address Book Element NameChanges That csClient Makes to the Mail File Server Placement Windows Domains and Domino DomainsAuthentication Active Directory Accounts and PermissionsDomino Clusters Domino PermissionsCisco Unity Subscribers and Domino Users Client Access Licenses Cisco Unity and the Domino Address BookMessage Routing Backing Up and Restoring DataServers Requirements and Recommendations Unified Messaging ConfigurationsUnified Messaging, No Domino Cluster Unified Messaging, Domino Cluster Voice Messaging ConfigurationCriteria for a Supported Configuration Deploying Cisco Unity for Lotus Domino Administrative Access and Control Network ServicesDeployment Tasks for Unified Messaging Configurations Establishing Support PoliciesOperational Tasks Design Guide for Cisco Unity Release Integrating Cisco Unity with the Phone System OverviewHow an Integration Works Digital Integration with Digital Pimg Units Lines and Cables to Make Physical ConnectionsIntegration with Cisco Unified Communications Manager Dtmf Integration with Analog Pimg Units Timg Integration LAN/WANDtmf Integration with Voice Cards Serial Integration with Voice CardsSettings in the Phone System and in Cisco Unity Connections for a Serial Integration by Using Voice CardsCall Control General Integration Issues Feature Sccp SIPIntegrating Cisco Unity with the Phone System Option Considerations Cisco Unified Communications Manager Security Features DescriptionDescription When Data Is Encrypted Setting EffectSettings for Individual Voice Messaging Ports Disabling and Re-Enabling SecurityPacketization 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 SIP Compliance Supported SIP IntegrationsCisco Unity Failover with SIP Trunks Description of Pimg Integrations Dtmf Integration with Analog Pimg Units Description of Timg Integrations Setup and Configuration Firmware Updates Serial IntegrationsIncreasing Port Capacity Cisco Unity FailoverCisco Unity Failback Multiple Integration Support/Branch Office ConsolidationIntegrating with Multiple Phone Systems Using Sccp Phone Systems with Other Integrations Requirements for Integrations with Multiple Phone SystemsOptional Integration Features Alternate ExtensionsReasons to Use Alternate Extensions How Alternate Extensions WorkAlternate MWIs MWIs for Extensions on a Non-Integrated Phone SystemCentralized Voice Messaging OL-14619-01 OL-14619-01 Cisco Unity Failover and Standby Redundancy FailoverStandby Redundancy Cisco Unity Failover and Standby Redundancy Cisco Unity Failover and Standby Redundancy Diagram of a Standby Redundancy Configuration Pstn WANOL-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