Value-added service is a comprehensive service integrating voice, picture and text, with rich content and wide coverage. It is the integration of various services, providing a series of business combinations and bringing you a brand-new experience. Common value-added services include music-related services (such as ringing, cool dog music directional traffic packets, etc.). ), Wo TV related services (such as Wo video, Youku video directed traffic package, etc. ) and functional value-added services (such as call manager, school newsletter, etc.). ).