Mobile agent based system for mobility support

A method for providing mobility support for a user of a telecommunication system, said different system sites each comprising one of whose sites have an agent Site (SA), in which the user subscribes to a local site and is represented by a user agent (hereinafter UA) controlling user applications, user data and user's profile, the method being characterized in that: when the user is identified as such in a visiting site agent visiting site (hereinafter SAv) removes the home UA user, causing the home UA to move to the visiting site, wherein the home UA is strategically mobile, with the ability to displace the visiting site by selecting duplicate applications user, user data and user profile on visitors or site to establish a channel from the visiting site to the local site user based on a predetermined criterion for making applications, data and user profiles are available on the site visitor.