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This document discusses PDH (Pulse Code Modulation Digital Hierarchy) multiplexing. It describes how lower bit rate digital signals are combined using time division multiplexing to produce higher bit rate signals. Specifically, it details how in Europe 30 64 kbit/s channels are multiplexed with control channels to create a 2.048 Mbit/s signal. It then explains how further levels of multiplexing were standardized at 8 Mbit/s by combining 4 x 2 Mbit/s signals, and higher rates of 34, 140, and 565 Mbit/s to cr

Author

hooda3

Language

EN