Patent ID: 8868078

Claim:
A mobile terminal comprising: transceiver apparatus operable to access a wireless network using an earlier generation radio access technology and a later generation radio access technology, for establishing a voice channel and packet data channel; and an inter radio access technology selector configured to monitor a condition for disabling the access using the earlier generation radio access technology, being a condition other than coverage under the earlier generation radio access technology falling below an acceptable lower level; the selector being configured to make inter radio access technology decisions dynamically from the mobile terminal by, in response to detecting said condition, updating registration with the network to indicate that the earlier generation radio access technology is no longer supported so as to prevent the mobile terminal being subject to inter radio access technology decisions from the network that would otherwise impose transfer to the earlier generation radio access technology; at least some of the inter radio access technology decisions made from the mobile terminal thereby disabling the access using the earlier generation radio access technology whilst in presence of at least said lower level of coverage under the earlier generation radio access technology.