One of the V-High multimedia broadcast service "NOTTV" provides bidirectional services by its receivers having the function of both receiving broadcast wave and using communications network. Compared to traditional broadcasting services, it is characterized by the communication function that plays an important role in providing the main broadcast service. In the process of developing receivers, it is important to verify a series of functions which combines broadcast and communications. To improve the quality of the receivers, mmbi,Inc. provides the test environment to the developers.