The dtmINSPECTOR is a software tool, which tests the conformance of all DTMs with the FDT specification. All DTMs, such as communication, device and gateway DTMs can be tested with this tool. The certification of DTMs with the dtmINSPECTOR gives the user the necessary peace of mind for his DTM supplier and provides the best possible DTM development support to DTM producers. The dtmINSPECTOR is a major component in the certification process laid down and enforced by the FDT Group. Beside the necessary functionalities for the certification process, dtmINSPECTOR also delivers all properties to effectively support the development process.