Patent ID: 7843860

Claim:
A communications system, comprising: at least one packet data support node; at least one charging and/or policy handling node; and, at least one application function for handling mobility management and call control of mobile user stations requesting and/or accessing services; wherein: each packet data support node comprises means adapted to send, upon reception of a request for bearer services from a mobile user station, first mobile user station identity related information over a first interface to a charging and/or policy handling node; the application function comprises means for sending, upon reception of a request for a service session from a mobile user station, second mobile user station identity related information over a second interface to the charging and/or policy handling node; and, the charging and/or policy handling node comprises verification means adapted to establish whether the request for a bearer service to the packet data support node and the request for a service session to the application function originate from one and the same mobile user station.