Routing packet flows along an optimized path in an IMS network

摘要

Routing a packet flow in a communication session includes facilitating a communication session between a first endpoint and a second endpoint. A permanent anchor of a home network receives path offers sent by the first endpoint. An optimized path offer corresponds to an optimized path passing through a transient anchor of a visited network and bypassing the permanent anchor. A default path offer corresponds to a default path passing through the permanent anchor. The permanent anchor determines whether packet flows between the first endpoint and the second endpoint are to be routed along the optimized path. The default path offer is removed if the packet flows are to be routed along the optimized path. The optimized path offer is removed if not. The remaining path offer is forwarded to the second endpoint.