A method and system of an embodiment of the present invention may include sending an override signal to a first user wherein the first user is having a first dialog with a second user; establishing a second dialog with the first user; receiving a signal from the second user; and establishing a third...http://www.google.es/patents/US8165280?utm_source=gb-gplus-sharePatente US8165280 - Method and system for providing busy override service in a SIP-based network
Method and system for providing busy override service in a SIP-based network