a measurement device for communication purposes is disclosed that enables a plurality of differing measurement functions , and moreover , the addition of measurement functions . a measurement device for communication that determines the quality of communication in communication devices making up a communication system by way of communication lines includes interface function boards that regulate connections between communication devices by way of communication lines , a plurality of measurement function boards provided for each test item that perform communication tests , and an exchange function unit that connect these boards . the device is constructed so as to allow addition of a measurement function board equipped with new measurement functions , the exchange function unit establishing connections between the added function board and interface function boards .