Intelligent system for identifying visitor and providing communication service using mobile terminal and method thereof

An intelligent system for identifying and communicating to a visitor using a wireless terminal and a method thereof are disclosed. The system includes: a doorphone processor for processing a bell signal event, setting and releasing of a session connection, and processing voice/video data; a terminal recognizer for determining a location of a resident based on a location of a wireless terminal when a bell is activated; a information manager for storing and managing contact addresses of terminals; and a proxy server for requesting a session connection to one of the terminals, selected by the resident, based on the contact addresses, exchanging voice and image of the visitor and voice of the resident between the video doorphone device and the selected terminal through a session channel connected by the resident's allowance of the session connection request, and releasing the session by a request of the selected terminal.