Local IP networks enable all the features of two-way television to be accessed. Network technologies are widely spread at the moment. They are used for Internet connection, IP telephony and also IP television. IPTV technology allows television content to be broadcast into IP networks with HD video and multi-channel audio. The requirements for achieving this are an IP network with multicast broadcasting support, a head-end that receives external digital TV signals and manages all the IPTV systems, and set-top boxes for subscribers’ TV’s. The IP protocol enables two-way connections between head-end and settop boxes to be organized. Thanks to all these functions, users can enjoy interactive TV and other media features not available to conventional television subscribers.