TRANSMISSION AND RECEPTION OF SYNCHRONOUS DATA AND TIMING SIGNALS USING A STEADY BIT STREAM

摘要

ABSTRACT OF THE DISCLOSUREIn an telecommunications switching system, user clockdata is "massively sampled" at the source node with reference toa global clock signal, and reconstructed with no more thanallowable error at the destination. Massive sampling andreconstruction of the clock signal allows users of thetransmission system to send data at arbitrary data rates and toperform their own clock synchronization at a different protocollevel from the hardware switching system. Direct use of theglobal system clock rate of approximately 192 kilobits per second(kbps) is provided for by synchronizing the user data with theglobal clock signal.