Patent ID: 7623640

Claim:
A door intercom system installed on a door of a community for communicating with and identifying a visitor and opening/closing the door through a network by an inhabitant among a plurality of inhabitants of the community and capable of transferring data to a system provider through the network, comprising: a central processing unit (CPU); a database used to store inhabitant codes, network logon numbers and identification numbers of the plurality of inhabitants therein; a dialing key module connected to the CPU and through which the visitor inputs the inhabitant code corresponding to the inhabitant, wherein the CPU acquires the network logon number corresponding to the inhabitant from the database in response to the inhabitant code received; a display module connected to the CPU to display information associated with the inhabitant to the visitor; a video and audio processing module connected to the CPU and being composed of an IP phone and a VP phone; and a network interface connected to the CPU and video and audio processing module, respectively, at one end and to the network at the other end so that the door intercom system is allowed to be communicatively connected to the inhabitant end and transfer data to the system provider, wherein the network is connected to a PSTN and connected to the inhabitant end through the PSTN so that the visitor is allowed to communicate with the inhabitant end through an email or message or alternatively through the video and audio processing module or be identified by the inhabitant end through the video and audio processing module, the network being also connected to the system provider so that the door intercom system is allowed to transfer data to the system provider.