A user interface for screen phones monitors telephone line state information and displays user interface controls and telephone line status information dependent on the telephone line state. The user interface includes a display element referred to as a call slip that expands and collapses in response...http://www.google.fr/patents/US6975712?utm_source=gb-gplus-shareBrevet US6975712 - Common visual and functional architecture for presenting and controlling arbitrary telephone line features
Common visual and functional architecture for presenting and controlling ...
