A method of effecting automatic callback in a mobile telecommunication system. A calling subscriber is permanently connected to a public switched telephone network and a called subscriber is a mobile unit which moves in the public land mobile network. A centrally located home location register keeps...http://www.google.es/patents/US5406616?utm_source=gb-gplus-sharePatente US5406616 - Method of completing a telephone call in a telephone system
Method of completing a telephone call in a telephone system
