PON is a mature optical fiber access network technology, which integrates the advantages of low cost, high bandwidth, strong expansibility and other advantages. It adopts the passive spectral network and point-to-multipoint structure, which changes the problems existing in the active optical network such as many fault points, difficult maintenance and high operating costs.

ONU is a user terminal device independently developed by BTPT in line with such industrial background.The device has built-in two-layer switching function . It is compact and compact, and is an FTTH optical network unit with high performance and low power consumption.ONU can automatically switch EPON/GPON working mode and can be used in EPON/GPON network, which is very suitable for the application requirements of various data services in FTTH networking scenarios of various operators.