To enhance Chunghwa Telecom 4G LTE mobile backhaul bandwidth, Wellteck System Engineering Inc. cooperated with ACTS, using ACTS technical expertise in the field of packet-optical transmission, providing Coriant hiT7090 PTN network equipment technical support, to build Chunghwa Telecom next generation of "packet transport network (PTN)" high-reliability and high-quality 4G LTE mobile communication services.