The end-user desktop application is the frontend
element of the HD videoconferencing platform giving users
the possibility of audio-video communication. The platform
allows both point-to-point and multipoint videoconferencing
sessions. To enable the latter, a Multipoint Control Unit
(MCU) server is used to provide connectivity between all
participating sites. A Service Oriented Architecture (SOA)
approach is applied to extend the capabilities of the system by
adding services providing new functionality [4,8]. One of
these services allows the platform to take advantage of Quality
of Service assurance