A system in a cellular telecommunications network that combines the functionality of a home location register (HLR) with the functionality of a service control point (SCP) in a single functional unit without accessing the public switched telephone network. The system allows cellular subscribers the degree...http://www.google.de/patents/US5920820?utm_source=gb-gplus-sharePatent US5920820 - Combined home location register and service control point for a cellular telecommunications network
