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*A USL (User Subscription License) is required to enable the functionality of an online service for a particular user

LICENSING OCS 2007 R2OCS is licensed through a Server and CAL (Client Access License)model and so customers should purchase a Server license for eachserver, and CALs for either users or devices.

OCS offers different levels of functionality withcorresponding CALs. The core functionality such as theinstant messaging functionality (depicted by the blueshading) is linked to a Standard CAL (depicted by the bluelicense) assigned to a user or device.

If the advanced functionality such as the Webconferencing and voice/telecom integration(depicted by the red shading) is required, thepurchase of an Enterprise CAL is required(depicted by the red license) in addition to the Standard CAL.

OFFICE COMMUNICATIONS SERVER 2007 R2Microsoft Office Communications Server (OCS) 2007 R2provides instant messaging, presence, and video andvoice communications:

Licensing Microsoft Office Communications Server 2007 R2

Microsoft Office Communications Server Home Page:office.microsoft.com/communicationsserver Licensing information on the Microsoft Partner Network:https://partner.microsoft.com/global/licensing

Microsoft Office Live Meeting provides the same conferencing functionalitywhich is available in OCS to users who have Standard and Enterprise CALs. Thedifference with Live Meeting is that it is offered as a Microsoft Online Service.This means that rather than the services being installed on the organization'sown servers, the services are installed on Microsoft's servers which users accessacross the Internet.

For any business wanting to license 5 or more users, they can do so through anOpen Value agreement or the Microsoft Online Subscription Program (MOSP)which is covered in a separate reference document. Larger organizations canchoose between purchasing through MOSP or a Select or Enterprise Agreement.

MicrosoftServers

Organization'sNetwork

LIVE MEETING LICENSINGThe Office Live Meeting online service is available asa Standard or Professional license:

Office Live Meeting Standard provides a meetingcapacity of up to 250 participantsOffice Live Meeting Professional provides ameeting capacity of up 1,250 participants withunlimited storage of shared meeting recordings for360 days

Both editions requireeach internal user tohave a USL (UserSubscription License)*.No licenses arerequired for external

participants.Note that the deviceproviding conferencephone and 360-degreecamera is a separate purchase.

OCS 2007 R2 STANDARD AND ENTERPRISE EDITIONSStandard and Enterprise server licenses for OCS are available. The Enterprise editionis recommended for organizations with more than 250 users since it offers extrasupport for scalability and availability, but either server license can be used withStandard and Enterprise CALs.

EXTERNAL USERSFor OCS 2007, Standard and Enterprise External Connector licensesare available to cover external users. Note that for OCS 2007 R2,external users can attend an OCS 2007 R2 Web conferencewithouta CAL or External Connector.

OCS 2007 R2 CAL REQUIREMENTSCALs are required for:Users with IM identities hosted on the OCS ServerUsers with OCS voice extensions Internal users organizing or attending a web conferenceCALs are not required for:Users receiving a call from an extension hosted on the

OCS ServerNon OCS users placing a call to an extension hosted on

the OCS Server Public network or federated users communicating with

an OCS user External users attending a web conference

PUBLIC INSTANT MESSAGING CONNECTIVITYTo enable users to communicate with people using Windows Live or AOL instantmessaging tools, either SA on the CALs is required or an Office Live CommunicationsServer Public Instant Messaging Connectivity (PIC) User Subscription License*. A PICis always required to allow users to communicate with Yahoo! instant messaging.Users can communicate with Google Talk with no additional licensing requirement.

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