Abstract: The system receives line signals including tone coded information request messages from a telephone line and transmits synthesized human voice response messages along the same line. The system comprises a programmed computer, a processing section connected to the telephone line to receive signals from the telephone line, and an interface circuit for providing communication between the processing section and the computer. A plurality of processing sections are used with a plurality of telephone lines, with only one interface circuit being used to provide communication between all of the processing sections and the computer. Each processing section contains a voice synthesizer circuit, a line control circuit, and a tone decoder circuit. Each of these circuits provides a status signal when the circuit must communicate with the computer. The interface circuit includes an interrupt circuit which receives the status signals and provides an interrupt signal to the computer.