Patent ID: 7583709

Claim:
A method for transporting Plesiochronous Digital Hierarchy (PDH) tributaries, the method comprising: accepting an electromagnetic waveform representing a plurality of PDH tributaries; generating an electromagnetic waveform representing a serial data stream of interleaved PDH tributaries by interleaving the PDH tributaries into a payload of a data frame structure; generating an electromagnetic waveform representing a serial control stream of signals for recovering the PDH tributaries by loading the control stream into a payload of a control frame structure and generating a control byte for each generated data byte by interleaving control bytes in the control frame structure, aligned with corresponding data bytes in the data frame structure; generating an electromagnetic waveform clock signal for timing the data and control streams; and, transmitting the electromagnetic waveforms representing the serial data stream, the serial control stream, and the clock as independent streams to a receiver; receiving the electromagnetic waveform representing the generated serial data stream; receiving the electromagnetic waveform representing the generated serial control stream; receiving the electromagnetic waveform representing the generated clock signal; in response to the clock signal and serial control stream, disinterleaving the interleaved PDH tributaries as follows: identifying a frame payload location marker (J0 byte location) in the serial data stream; identifying a frame payload location marker (J0 byte location) in the serial control stream; aligning the J0 byte in the serial data stream with the J0 byte from the serial control stream; and, supplying an electromagnetic waveform representing the plurality of disinterleaved PDH tributaries.