A method of domain selection for routing control, applied to a communication system including a Circuit Switched (CS) network and an IP Multimedia Subsystem (IMS) includes: obtaining call status(es) of a user in any one or both of the CS network and the IMS; selecting a domain via which an incoming call...http://www.google.de/patents/US8170565?utm_source=gb-gplus-sharePatent US8170565 - Method and apparatus of domain selection for routing control
