METHOD FOR PREVIEWING IMAGE OF COMMON DOOR VISITOR IN PLURALITY OF TERMINALS OF HOUSEHOLD

摘要

PURPOSE: A method for previewing an image of a common door visitor in a plurality of terminals of a household is provided to preview an image of a common door visitor in a plurality of wireless and wire terminals by providing an incoming bell to the plurality of wireless and wire terminals. CONSTITUTION: A visitor calls a specific household by using a common door unit(a2). The common door unit transmits an incoming bell to wire terminals and a wire information terminal which are in the specific household through a home server, and transmits the incoming bell to a wireless information terminal of the specific household(b2,c2,d2). The home server transmits analog image signals to the wire terminals and the wire information terminal(e2,f2). The common door unit transmits digital image signals to the wireless information terminal(g2).