Abstract: The invention relates to a method of managing calls in a mobile telephone network comprising a network core, and a network controller controlling base stations, the base station controller being used to control the transfer of an ongoing call on the network to a target network when the mobile terminal is about to leave the coverage zone of the first network (R1). In order to enable the transfer to take place to the target network (R2, R3, R4), the network core transmits information to the controller representing the rights available to the mobile terminal, this information being distinct from the international identity code of the mobile subscriber. The information relating to rights is preferably inserted in the temporary mobile subscriber identity (TMSI) code.

Abstract: A method of improving co-operation between entities in a cellular mobile radiocommunications network, during inter-cell call handover, during which a “new server cell” is chosen from a set of “candidate cells” as being a candidate cell to which a requested handover is possible, candidate cells to which a requested handover is not possible being referred to as “rejected cells”, wherein, during “external” call handover, namely when handing over a call from a “current server cell” controlled by a “current server entity” to a “new server cell” controlled by a “new server entity” which is distinct from said current server entity, said new server entity is informed of any previously rejected cells.