How frequently can the stuff bits used

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Reference no: EM1325257

Suppose a multiplexer has two input streams, each at a nominal rate of 1 Mbps. To accommodate deviations from the nominal rate, the multiplexer transmits at a rate of 2.2 Mbps as follows. Each group of 22 bits in the output of the multiplexer contains 18 positions that always carry information bits, nine from each input. The remaining four positions consist of two flag bits and two data bits. Each flag bit indicates whether the corresponding data bit carries user information or a stuff bit because user information was not available at the input.

Suppose that the two input lines operate at exactly 1 Mbps. How frequently are the stuff bits used? Explain why.

Reference no: EM1325257

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