The development of the access network requires bandwidth to meet the needs of various broadband services now and in the future, and the requirements for equipment cost and operation and maintenance management overhead are relatively strict. At present, PON is the main technology for realizing FTTB/FTTH. For the problem of PON network such as ONU flashing and insufficient splitting ratio, SONT provides CLASS C++ level optical module to solve this problem. For PON network upgrades, SONT provides 10GEPON and XGPON series optical transceivers. SONT offers professional PON modules that are deployed in large numbers in FTTX networks with cost and quality advantages.