Patent ID: 8149872

Claim:
A single chip synchronous optical network interface device comprising: at least one optical carrier framer for framing a channelized input data stream to produce a transmit data stream for conversion to an optical signal for transmission over an optical network link, and for framing a receive data stream converted from an optical signal received from the optical network link to produce a channelized output data stream; a cross connect for multiplexing a plurality of input data channels to form the channelized input data stream, and for de-multiplexing the channelized output data stream into a plurality of output data channels; a packet mapper for packetizing at least one of the plurality of output data channels to produce at least one packet output stream for transmission to user equipment over a packet network, and for de-packetizing at least one packet input stream received from the user equipment over the packet network to produce at least one of the plurality of input data channels; a bus interface for connecting additional communications interface devices, the bus interface arranged to permit the transfer of data from at least one of the plurality of output data channels to one or more operably coupled communication interface devices located external to the single chip synchronous optical network interface device, and the transfer of data from the one or more operably coupled communication interface devices to at least one of the plurality of input data channels, the communication interface devices processing the data from the at least one of the plurality of output data channels for transmission in a different format over a communication link and processing data received in the different format from the communication link for transmission using the at least one of the plurality of input data channels; and at least one embedded microprocessor core that is operable to automatically adjust operation of the single chip synchronous optical network interface device according to operational statistics collected from one or both of the at least one optical carrier framer and the packet mapper, wherein the at least one embedded microprocessor core is arranged to isolate break points in a subscriber loop using time domain reflectometry.