Product Highlights OpenTTCN Tester for TTCN-3 is a sophisticated TTCN-3 test execution and automation tool. "Open" in the name of "OpenTTCN" stands for our dedication to using publicized industry standards and to the provisioning of open interfaces between the components of the product and the user supplied parts. This openness enables easy integration of OpenTTCN with existing test equipment, test management software, and other software tools. >>