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Calculate the maximum access time that can be permitted for the data and control memories in a TSI switch with a single input and single output trunk multiplexing 2500 channels. Also, estimate the cost of the switch and compare it with that of a single stage space division switch.
tm = (125 x 103)/(2500 x 2) = 25ns
c= 2 x 2500 = 5000 units
This switch is non-blocking and supports complete availability. An equivalent particular stage space division that uses a matrix of 2500 x 2500. Therefore, the cost of such a switch is 6.25 million units.
Cost advantage of time switch = (6.25 x 106)/5000 = 1250
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