IMS-AKA Secure Call Registration over TCP

To register and place a call into the network, a UE creates 3 TCP connections. The first insecure connection is established to the port (usually 5060) specified in the sip-port for the first registration request. You should create a sip-ports configuration element with port 5060 and an ims-aka-profile parameter that references an ims-aka-profile configuration element. The ims-aka-profile configuration element initiates the process that creates secure connections. For example: