Patent ID: 7764775

Claim:
A distributed intercom system, comprising: a centralized interconnection unit including: (i) a central control device configured to receive, process and transmit signals; (ii) a power distribution device configured to transmit a power signal for distribution; and (iii) at least one cable connection port configured to receive a cable connection therein; at least one cable having a cable connection element configured for connection to the cable connection port, the cable further configured to transmit a control signal, a line-level, analog audio signal and the power signal; and at least one remote user interface unit connected to and in communication with the centralized interconnection unit through the at least one cable, the at least one remote user interface unit including: (i) an amplifier configured to amplify the line-level analog audio signal and provide an amplified audio signal; (ii) a speaker device configured to output the amplified audio signal; and (iii) a microphone device configured to receive audible input and generate an audio input signal; wherein at least one component of the remote user interface unit is powered at the remote user interface unit by the power signal transmitted by the power distribution device of the centralized interconnection unit.