Common TTCN-3 CoDec to reduce test engineering cost

TTCN-3 is an abstract language for specification of Abstract Test Suites. Coding of TTCN-3 variable into physically transmittable messages and decoding of bit strings into their TTCN-3 representation is an external and specialized component, called CoDec. CoDec development, either implicitly or explicitly, must be included in any TTCN-3 testing activity. Experience showed that there is a high cost associated with CoDec development and maintenance. This paper presents a methodological approach to minimize the complexity of CoDec development. The approach is method and also been developed to a tool. It enables the developer to complete the codec work by just write an XML file. Currently it only supports few types of protocol, but it Provide a framework that can expand itself to support more and more protocol data format.