Patent ID: 8761138

Claim:
A method, comprising: detecting, by a user terminal connected to a current public land mobile network (PLMN) via a first radio access technology, that a circuit switched fallback service procedure requested by the user terminal has failed due to at least one of access class barring, service reject, and release of a network access stratum (NAS) connection; and in response to the detection, selecting a second radio access technology to be applied on the basis of coverage data contained in stored information, wherein: the second radio access technology to be applied is capable to provide circuit switched services; and the stored information associates at least one PLMN with at least one radio access technology and comprises: at least one PLMN selector list that is predefined by at least one PLMN; at least one radio access technology candidate for the at least one PLMN; and the coverage data indicating which at least one radio access technology is associated with which at least one PLMN in which geographical areas.