Enhanced establishment of ims session with secure media

Abstract

A method of establishing a secure connection between a user equipment, UE, and a media gateway, MGw, at setup of a communication session between the UE and another party. The MGw is controlled by a control server and the setup of the communication session comprises a security handshake procedure. The method comprising, prior to receiving a communication session set-up request, determining by the control server whether the MGw supports a procedure for early commencement of the security handshake and providing by the UE to the control server an indication that the UE supports the procedure for early commencement of the security handshake procedure and connection parameters for use in the security handshake. On receiving, by the control server, a communication session setup request from the other party, if both the UE and the MGw support the procedure for early commencement of the security handshake procedure, an instruction is sent to the Media gateway to commence the security handshake procedure. The instruction comprises an indication to commence an early security handshake and the connection parameters for the UE. On receipt of the instruction, the MGw commences the security handshake () with the UE and establishes a secure communications session.