Patent ID: 8218459
Filing Date: 2012-07-10
Classification: H04L

Abstract:
1. A method comprising: providing an administrative interface between a first network and a second network, wherein the administrative interface is different from one or more communications session signaling interfaces between the first network and second network; communicating control messages over the one or more communications session signaling interfaces for establishing a communications session; performing first topology hiding at the one or more communications session signaling interfaces between the first and second networks; communicating authorization, authentication, and accounting messages over the administrative interface between a first module in the first network and a second module in the second network; and providing a topology hiding module implemented in a computer and associated with the administrative interface to perform second topology hiding of the first network at the administrative interface, wherein the second topology hiding is in addition to the first topology hiding, and the first topology hiding and second topology hiding are to hide topology information of the first network from the second network, wherein performing the first topology hiding at the one or more communications session signaling interfaces is independent of the second topology hiding at the administrative interface.