Patent US 5,535,258

A radio telephone interface apparatus for speed dialing any of a plurality of stored sequences of digits forming telephone numbers. Pre-stored telephone numbers are stored in an electronic memory. Actuation of switches permits either sequential access to each of the stored telephone numbers or direct, nonsequential access to a desired set of stored telephone numbers. When the telephone numbers are sequentially access, mneumonic information associated with each one of the telephone numbers is provided to a voice synthesizer to provide an aural indication of the telephone numbers stored within individual ones of the directory locations.