Abstract: An electronic telephone call timing system for providing both individual and cumulative call timing for a dedicated telephone.The device includes a call timer and display unit for generating a visible indication of the elapsed time of an individual call interval, a cumulative timer and display unit for generating a visible indication of the cumulative use time of the associated telephone, a power supply unit for generating a reference supply voltage, a gated clock signal train and a reference frequency signal from an AC line source, and a telephone off-hook sensor unit coupled to the power supply unit and the call timer and display unit for generating a gated reference frequency signal and a gated reset signal in response to the receiver being placed in an off-hook condition. The call timer and display unit includes circuitry responsive to the generation of the gated reset signal for initializing a counter contained therein.