Patent ID: 7272321
Filing Date: 2007-09-18
Classification: H04J

Abstract:
1. An optical network comprising: a. an optical fiber ring; b. an optical line terminal for transmitting redundant signals simultaneously through the fiber ring in opposite directions of the ring, said fiber ring having ends terminating at the optical line terminal; c. said signals being one or more selected from the group voice, data, or video; d. a plurality of optical network units passively connected to the fiber ring, said optical network units receiving signals from the optical line terminal through the fiber ring; e. said optical line terminal configured for transmitting TDM signals to the said plurality of optical network units; f. said plurality of optical network units configured for transmitting signals through the fiber ring to the optical line terminal according to a time division multiple access protocol; g. the optical network units not communicating directly with one another through the fiber ring; and, h. said network being a passive optical network.