Importance

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Abstract

A broadcasting service providing system has an asynchronous transfer mode switch connected to a broadcasting server through a permanent virtual circuit so as to support a point-to-multipoint connection. A single permanent virtual circuit of the broadcasting server is established between the broadcasting server and the asynchronous transfer mode switch for each broadcasting channel and a permanent virtual circuit for broadcasting is established between the asynchronous transfer mode switch and a subscriber. The system has channel zapping message processing equipment to analyze a broadcasting channel zapping message input from the subscriber through the permanent virtual circuit for broadcasting and check multicast group information and subscriber identification information, and broadcasting channel managing equipment to search for permanent virtual circuit information of the broadcasting server corresponding to the multicast group information received from the channel zapping message processing equipment and then return the searched information to the channel zapping message processing equipment.

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First Claim