The IPTV application server (IPTV AS) is based on the SIP application server (SIP AS) developed at the DAI-Labor. It's a robust application development and runtime plattform for deploying converged services blending the HTTP and SIP world. The IPTV AS provides IPTV related services accessible through SIP and HTTP interfaces. These services expose Electronic Program Guide (EPG) features, Personal Video Recorder (PVR) functionalities, and personalization abilities to the user through AJAX enabled HTML based user interfaces. To provide these services the IPTV AS uses the backend infrastructure by sending control messages to the Media Function, initiating IPTV streams or requesting recommendations from the semantic store.