Patent ID: 6025945
Filing Date: 2000-02-15
Classification: H04B

Abstract:
An optical transmitter/receiver comprising:an electric connector means connected to a terminal device by a twisted pair cable with a feeder line;an optical transmitter means for converting an electric signal, received from the terminal device via said twisted pair cable, into an optical signal, and transmitting the optical signal over an optical fiber;an optical receiver means for converting an optical signal received through the optical fiber into a second electric signal, and transmitting the second electric signal over the twisted pair cable to said terminal device;optical signal detecting means for detecting whether there is an optical signal in said optical fiber and outputting a signal indicative of said detecting; andsignal line insertion/removal indicating means for detecting insertion and removal of either or both said optical fiber or said twisted pair cable, based on said signal output from said optical signal detecting means, and for indicating the detected insertion or removal of said optical fiber or said twisted pair cable to the terminal device.