Patent ID: 6542267
Filing Date: 2003-04-01
Classification: G02B,H04L,H04Q

Abstract:
A neighborhood Broad Band ISDN optical network providing on-demand access to and from customer neighborhood premises and to and from a local exchange carrier telephone network and further supporting two way multimedia digital traffic, said optical network comprising:a. an optical trunk from a local exchange carrier's central office or a network hub to a neighborhood; b. at the neighborhood end of the optical trunk an exchange comprising a concentrating node for CO switched traffic and an asynchronous transfer mode switch for routing multimedia traffic to and from the customer premises; c. a passive optical ring looping around the neighborhood from the exchange and split at the exchange so as to have a first end and a second end, the first end of said optical ring connected within the exchange by means of an optical cross connection panel to the asynchronous transfer mode switch and the second end of said optical ring connected to the concentrating node in the exchange, said optical ring comprising an express entry cable containing a plurality of individual fibers, said ring further comprising a plurality of pole mounted or manhole customer cross connection boxes distributed along the ring and located in the vicinity of a customer being served; d. at each of the plural customer cross connection boxes a customer fiber optic interface, said interface comprising an optical cross connection panel for conveying incoming digital streams to and from each customer fiber; e. from each customer cross connection box to each premises a drop fiber pair comprising a primary fiber and a secondary fiber, the primary fiber having a cross connection box end and a premises end and the secondary fiber having a cross connection box end and a premises end; f. connected at each of the primary fiber cross connection box end and primary fiber premises end and the secondary fiber cross connection box end and secondary fiber premises end a wavelength division multiplexer mixing the two traffic streams on each of the primacy fiber and the secondary fiber, and signal processing circuitry to administer line supervision signaling over a customer optical connection; and g. an on-premises terminal directly connected to the drop fibers of one of the plural cross connect boxes by a pair of jumper fibers, each jumper fiber of which pair is linked to a corresponding fiber of the drop fiber pair by an optical interface, said on-premises terminal being capable of optical transmission and reception, seizing the optical line using stored supervision signaling messages, and dialing up either the central office or the neighborhood hub.