Patent ID: 6744876
Filing Date: 2004-06-01
Classification: H04M

Abstract:
A tone sending device of an electronic private branch exchange comprising:a first means introducing a voice message as a first signal through an interface into a time sharing switch; said time switch outputting said voice message as a second signal; a second means setting a selection by a type of a tone so as to select either a third signal being predetermined tones from a fixed tone source or said second signal comprised of tones corresponding to said voice message; and a third means controlling said time sharing switch so as to conform an output order and timing of tones of said second signal to be the same as the order and timing of tones of said third signal; whereby said tone sending device selectively sends out, selected by the type of a tone, either said second signal or said third signal as a variety of tones to be used to inform a telephone or other line of the state of the call or the line.