Great progress has been made in the information industry of the world. Protocol and signalling are becoming more and more important. Telecommunication equipments and instruments are the very guarantee for information industry. Following the development of mobile communication and intelligence network, the 64 kb/s No.7 signalling link now used is no longer suitable for the service increasement. The 2.048Mb/s high speed signalling link has become the best substitude. Since there is no related protocol testing equipment used for telecommunication branch, The 2.048 Mb/s high speed signalling protocol-analyzing set is developed for this purpose. In order to ensure the quality of the analyzing set, the best embedded processor and newest real time operating system are employed.