Test procedures for compatibility confirmation of “Mobile Radio Station as terminal equipment” is evaluated as a conformity confirmation of radio segment interface specified in ARIB Standard “Personal Digital Cellular Telecommunication system (RCR STD-27)”. This test procedure is requested to perform on every type approval with or without standard options. In precedent of this test, it is premised that conformity confirmation of this ARIB Standard should be done on each stage such as development or production by manufacture. Also, this test procedure specifies two test cases. One is the test with a compatibility confirmation tester, the other is the test with a network compatibility confirmation tester.