Method and arrangement for controlling calls in a hybrid cellular telecommunication system

摘要

A method (400) for controlling calls to and from a mobile station reachable via a hybrid cellular telecommunication system, where said mobile station is the first endpoint of a call, is characterized in that a set of allowed location areas is defined (402). Further, the location area of another endpoint of the call is determined (407), and decision about connecting the call via the hybrid cellular telecommunication system is made (408) based at least on the location area of said other endpoint. Arrangements (600, 610) implementing the method are also presented.