An improved user interface for a cellular telephone system subscriber unit, including the following functions: (1) a predictive keyboard input method for speeding up input on a telephone with a space limited keyboard; (2) a word completion method for speeding up input; (3) a distinctive signaling method...http://www.google.com.au/patents/US6032053?utm_source=gb-gplus-sharePatent US6032053 - Signaling the type of incoming telephone calls
