A terminal adapted to communicate via a communications system includes a memory capable of storing a plurality of ringing tones, where the plurality of ringing tones includes at least one set of at least two ringing tones associated with at least one event. The terminal also includes a controller capable...http://www.google.com.hk/patents/US7020497?utm_source=gb-gplus-share專利 US7020497 - Programming multiple ringing tones of a terminal
