OPTICAL LINE TERMINATION

摘要

An optical line terminal apparatus which the other ONU is continually serviced with ONU in which problem occurs in PON is provided to detect the failure of the fault optical module of the specific ONU(Optical Network Unit) or the laser control circuit. An optical signal from module transmits and receives an optic signal(200) and OLT(Optical Line Termination) controller(100). The generated optical signal is transmitted through the optical communications line. WDM(Wavelength Division Multiplexing)(300) transmits the signal transmitted from the optical transmission terminal. A blocking detection unit(400) detects the reception end of module for transmitting and receiving an optic signal.