Patent ID: 8340520
Filing Date: 2012-12-25
Classification: H04J,H04Q

Abstract:
1. An optical network unit communicating with an optical line terminal (hereinafter referred to as OLT) for point-to-point access (hereinafter referred to as P-P), comprising: a bidirectional optical transceiver that bidirectionally communicates with the OLT; a signal-type discriminating unit that discriminates whether a type of a downstream signal transmitted from the OLT and received by the bidirectional optical transceiver is for the P-P or not, and outputs an enable/disable control signal that controls an optical transmitter of the bidirectional optical transceiver to an enable state or a disable state in accordance with a discrimination result of the type of the downstream signal; and a control unit that controls the optical transmitter to the enable state or the disable state according to the enable/disable control signal, wherein the signal-type discriminating unit outputs to the control unit a disable control signal that controls the optical transmitter to the disable state under an initial state before the type of the downstream signal is discriminated, and outputs to the control unit an enable control signal that controls the optical transmitter to the enable state after the downstream signal is discriminated to be for the P-P.