Bruce is a project manager and system architect , mainly focusing on telecommunication product research and development. He has been researching and coding for many years on RCS, IMS, VoIP, VoLTE, ASN.1, TTCN-3, 5G, NFV/SDN, IoT, Edge Computing and Protocol Stack.Bruce lives in Hangzhou near the West Lake, and spends his free time on K12 education and open source maintenance.