SYSTEM AND METHOD FOR PRESENCE SUBSCRIPTION DELEGATION

A system and method for presence subscription delegation in a multi-domain environment in an SIP-based presence system are provided, in which a watcher transmits a presence subscription delegation request to a presence subscription delegation handler of a delegating user, the presence subscription delegation handler performs delegation authorization for the received presence subscription delegation request according to a presence delegation authorization rule of the delegating user being authorization information about presence subscription delegation, and a presence server of a presentity receives the presence subscription delegation request from the presence subscription delegation handler, performs presence authorization according to a presence authorization rule of the presentity, and transmits presence information about the presentity to the watcher via the presence subscription delegation handler.