METHOD FOR IMPROVED HANDLING OF IP MULTIMEDIA SUBSYSTEM CALLS IN A HOME MOBILE COMMUNICATION NETWORK AND A VISITED MOBILE COMMUNICATION NETWORK

摘要

A method for handling of IP multimedia subsystem calls and configuration of a user equipment using a home mobile communication network includes: in a first step, an IP multimedia subsystem call parameter information or an IP multimedia subsystem emergency call parameter information is transmitted by the visited mobile communication network to the user equipment in case that the user equipment is connected to the visited mobile communication network, or an IP multimedia subsystem emergency call parameter information is transmitted by the home mobile communication network to the user equipment in case that the user equipment is connected to the home mobile communication network; and in a second step, the user equipment—upon attempting an IP multimedia subsystem emergency call or an IP multimedia subsystem call—applies or acts according to the content of the IP multimedia subsystem call parameter information and/or of the IP multimedia subsystem emergency call parameter information.