COMMUNICATION SYSTEM

PROBLEM TO BE SOLVED: To provide the communication system in which rational charge imposition is conducted with respect to the use of a communication channel. SOLUTION: In the communication system that has a transmission station 2 receiving speech data sent from a caller telephone set 1 and sending the data to a called telephone set 8 via an Internet B and a reception station 5 receiving the speech data sent from the transmission station 2 via the Internet B and sending the speech data to the called telephone set 8, the transmission station 2 measures a substantial speech time between the caller telephone set 1 and the called telephone set 8 to avoid the charging resulting from the required time for line connection. Furthermore, the station 2 measures a communication time between the caller telephone set 1 and the transmission station 2 and a communication time between the reception station 5 and the called telephone set 8 and integrates the imposition on the communication above into a communication channel utility charge between the transmission station 2 and the reception station 5.