A mobile telecommunications network includes a radio access network with base stations and one or more additional access points. An access point is connected to a network core by an IP transport broadband connection. The access point is configured to appear to a mobile terminal as a conventional base station—that is, for example, it communicates with the mobile terminal using GSM or UMTS transport protocols and does not require any modification to a standard GSM or UMTS mobile terminal. Arrangements are disclosed which monitor the quality of the broadband connection between the access point and the network core and which cause the mobile terminal to handover to a neighboring base station in the event that the quality of the broadband connection becomes too poor for the class of communication between the mobile terminals registered with the access point to be performed satisfactorily.