Disclosed are systems and methods for communicating a message comprising hierarchical information with respect to a plurality of message transport mechanisms, and a plurality of transport managers adapted to communicate with the message transport mechanisms for transmission of a message to a particular...http://www.google.fr/patents/US8046471?utm_source=gb-gplus-shareBrevet US8046471 - Regressive transport message delivery system and method
Regressive transport message delivery system and method