Patent ID: 6965591
Filing Date: 2005-11-15
Classification: H04L

Abstract:
1. A method for communication employing a plurality of gatekeepers, the method comprising the steps of: receiving a first request for information at a first gatekeeper, said first request being received from a subscriber terminal without said first request having been sent through any other gatekeeper, sending to the subscriber terminal the information requested in the first request, receiving a second request for information at the first gatekeeper; determining whether the information requested in the second request is known by the first gatekeeper; sending the second request via at least one intermediate gatekeeper to a second gatekeeper if the information requested in the second request is not known by the first gatekeeper; receiving the information requested in the second request from the second gatekeeper via the at least one intermediate gatekeeper wherein a hierarchical level associated with said first gatekeeper is different from a hierarchical level associated with said intermediate gatekeeper; and sending the information requested in the second request to a third gatekeeper wherein the first gatekeeper and the third gatekeeper are of a same hierarchical level and located in a same domain and wherein said second request was received from said third gatekeeper without said second request having been sent through any other gatekeeper.