Tag: PDH Multiplexing

PDH multiplexing  PDH multiplexing (North America) The 24-channel PCM system is only the first, or primary, the order of digital multiplexing. If it is necessary to transmit more than 24 channels, the system is built up as in the plesiochronous digital hierarchy multiplexing (PDH multiplexing) diagram of the figure.     In the North American hierarchy, […]