An indication of urgency of a call is received from a caller. The urgency indication is communicated to the called party through a distinctive notification, such as distinctive ringing. The urgency indication may be obtained from a caller via a personal agent....http://www.google.es/patents/US6650746?utm_source=gb-gplus-sharePatente US6650746 - Urgency of call indication to called party through distinctive notification
Urgency of call indication to called party through distinctive notification