Coping with complex demands in time-effective manner, supervising a fast growing market and considering performance analysis are all essential steps in opening the national telecommunications market. Therefore, national governments are establishing a formal national Type Approval (TA) system as the basis and frame for accomplishing these goals. In this paper, by describing the importance of Type Approval necessities, we propose an effective test topology for a modular signaling type approval platform (STAP) to evaluate the quality of service degree in regard with the signaling section of switching systems. We want to show how the approving of a signaling system is possible in a simulated testbed. In what follows, it is tried to briefly highlight the functions and characteristics of the components located in the platform.