Importance

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Abstract

A collective house controller for relaying a call and guarding the houses is provided, in a collective house including a plurality of blocks separated from each other, each block including a plurality of households. The collective house controller includes a household interphone, i.e., intercom, for requesting/responding to a call while being connected with a first coaxial line and for performing a call by receiving a predetermined communication channel allocated thereto, a public entrance interphone for opening/closing a public entrance and transmitting an image signal, a gate guard post interphone for controlling opening/closing of the public entrance by checking a visitor in front of the corresponding public entrance, a block controller for relaying a call within a block by allocating a communication channel after receiving a predetermined communication channel allocated thereto while being connected with first and second coaxial lines, and a central controller for relaying a call between blocks by allocating a communication channel to the block controller while being connected with the second coaxial line. Thus, wiring and the maintenance thereof can be easily performed, simultaneous conference call can be provided and information can be transmitted and received.

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First Claim