Design of a Video Door Phone Service Providing Personal Mobility Based on Home Gateway System

摘要

Though typical video door phone systems can be used to talk to the visitors at the door, they have some shortcomings: the resident should stay in house and he/she could not be informed of any visitor information on his/her return to home. To overcome these limitations, we propose an architecture supporting user mobility, with which the resident at anywhere can view and converse with a visitor at the front door using PC's, PDA's and home servers with internet connections. We implemented the proposed architecture using SIP (session initiation protocol) and a home gateway system connected to a conventional intercom or a video door phone system.