Patent ID: 9065837
Filing Date: 2015-06-23
Classification: H04L

Abstract:
1. A method of performing a Session Initiation Protocol transaction in a Session Initiation Protocol based communications network from a first node to a third node via a second node, comprising: receiving a Session Initiation Protocol message at the second node from the first node, wherein the second node acts as a Session Initiation Protocol proxy; transmitting a request from the second node to the first node requesting that the first node take over responsibility of the transaction and forward the message directly to the third node, wherein the second node originates the request to the first node; forwarding the message from the first node directly to the third node in response to receiving said request; and wherein during the remainder of the Session Initiation Protocol transaction, exchanging further Session Initiation Protocol messages directly between the first node and the third node without traversing the second node.