Registration of network changeover due to a CS Fallback mechanism

摘要

The method involves registering a mobile radio terminal (104) at a base station device (109) of a universal mobile telecommunication system terrestrial radio access network (UTRAN)(103) for establishing a connection upon switching the radio terminal on the basis of a circuit-switched (CS) fallback mechanism. Reference on the CS fallback mechanism is transmitted by the radio terminal to the base station device in connection with an application. The application of the terminal is registered at the base station device as a function of reference. An independent claim is also included for a base station device.