The AE Services integration with Microsoft Lync Server 2010 and 2013 requires the Unified Desktop Edition Right To Use (RTU) license.

Every active registered Microsoft Lync client requires one Unified Desktop license during the time interval when it interacts with AE Services.

For more information about AE Services integration for Microsoft Lync Server licensing, see Deploying Avaya Aura® Application Enablement Services for Microsoft® Lync Server Products.