Patent ID: 9042533
Filing Date: 2015-05-26
Classification: H04B,H04M,H04N

Abstract:
1. A dual-channel analog door entry system comprising: a building gateway connected between at least one outdoor station and at least one floor distributor via two cables, wherein the building gateway receives a call request from the at least one outdoor station, identifies and assigns an available cable as an intercom channel, sends the call request to each of the at least one floor distributor via said intercom channel, and switches at least one of audio and video signals from the at least one outdoor station to the available cable; wherein each of the at least one floor distributor is connected with at least one indoor phone, wherein the at least one indoor phone receives and forwards the call request to a desired indoor phone of the at least one indoor phone, receives a call response from the desired indoor phone if the desired indoor phone is available, and switches the at least one of audio and video signals from the available cable to the desired indoor phone; wherein the two cables connect the building gateway and the at least one floor distributor, wherein the at least one floor distributor transmits the at least one of audio and video signals between the at least one outdoor station and the at least one indoor phone.