Patent ID: 6014708
Filing Date: 2000-01-11
Classification: H04J,H04L,Y10S

Abstract:
An adaptor (10) for mapping a fast ethernet payload input signal (12) to a synchronous payload envelope (SPE)/virtual container (VC) (14) of a synchronous optical network (SONET)/synchronous digital hierarchy (SDH) output signal (STS-3c/VC-4) (16) having a capacity of approximately 150 Megabits per second (Mbps), comprising:a mapping control logic means (18), responsive to said input signal, for providing a fixed stuff byte control signal (20), an overhead control signal (22) and a mapping/formatting control signal (24);a SONET/SDH overhead generator, responsive to said overhead control signal for providing an overhead signal (26);a fixed stuff byte generator, responsive to said fixed stuff byte control signal, for providing a stuff byte signal (28); anda SONET/SDH mapper/formatter (30), responsive to said fast ethernet payload input signal, said mapping/formatting control signal, said overhead signal and said stuff byte signal, for providing said fast ethernet payload input signal mapped to said SONET/SDH output signal,characterized in that said fast ethernet input signal has a rate greater than 100 Megabits per second but not greater than the approximately 150 Mbps capacity of the SPE/VC of said SONET/SDH output signal.