METHODS AND APPARATUSES SUPPORTING CS DOMAIN SERVICES OVER A PACKET ONLY MOBILE SYSTEM COMPRISING AN INTERWORKING EONCTION IWF

摘要

One object of the present invention is an architecture for the support of CS domain services over a Packet only mobile system such as the Evolved Packet System access, in a mobile communication system comprising an Evolved Packet System (EPS) and a CS domain in turn comprising at last one Mobile Switching Center MSC, said architecture comprising at least one Interworking Function IWF, such that IWF is perceived as a Radio Network Controller RNC or a Base Station Controller BTS by a MSC, and as an Application Server by the EPS.