Abstract: A PABX telephone interfaced cable television system especially useful in hotels and motels for distributing free and premium program channels via a coaxial cable television signal distribution network to one or more subscriber terminals and associated television sets, includes a remotely tuned R.F. signal converter connected to each subscriber's television set and the coaxial cable network for enabling the set to receive a subscriber selected one of the premium channels not normally receivable by the set. The converter is automatically tuned to the selected premium channel by enabling signals transmitted from a central station to the subscriber's converter via the PABX telephone network and the subscriber's telephone. The request for a premium channel is made from the subscriber's telephone by the dialing of a predetermined sequence of digits peculiar to the requesting subscriber and the desired premium channel selected for viewing.

Abstract: A cable television and communication system is disclosed which is suitable for community antenna television (CATV) closed circuit television (CCTV) and other types of signal distribution systems with service function applications such as for use in hotel, motel, apartment complexes, and the like. The system has the capability of distribution and subscriber reception of unencoded and encoded or limited access video and audio programs with simultaneous two way digital data communication. The subscriber units are interconnected by a tree-organized wideband communication link such as co-axial cable system with a network central unit. Subscriber unit identification control and data exchange is accomplished by the use of a high speed time-slot organized format with each subscriber being assigned a predetermined unique television synchronization related time-slot.