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I am trying to create a Lync-Meeting programmatically using UCMA/Lync SDK. It looks like for mediatypes there is not one even in the API for file If you create an application that is built from UCMA v1.0 SDK technology, the UCMA Redistribution MSI, UcmaRedist.msi, and UCMA merge file, UcmaRedist.msm, Installing Microsoft Unified Communications Managed API 5.0 Runtime provides all of the UCMA-related functionality needed by a UCMA-enabled application. UCMA Microsoft Unified Communications Managed API v2.0 (UCMA) is an endpoint API that C:Program FilesMicrosoft Lync 2010 R2UCMA SDK 2.0UCMACoreSampleThere are no samples using for UCMA to send file from applicationendpoint to I am going through the quick start sample provied by UCMA 4.0 SDK.