Suppose users share a 3 Mbps link through circuit switching

Suppose users share a 3 Mbps link through circuit switching. Also suppose each user requires 150 kbps when transmitting, but each user transmits only 10 percent of the time. a) How many users can be supported? b) Find the probability that a given user is transmitting. c) Suppose there are 120 users. Find the probability that at any given time, exactly n users are transmitting simultaneously. d) Find the probability that this circuit-switching link cannot transmit data from the users (probability of failure).

Solution

In this issue we consider sending continuous voice from Host

A to Host B over a bundle exchanged network(VoIP). Have A proselytes simple

voic to an advanced 64 kbps bit stream on the fl y. Have A then gatherings the bits

into 56-byte bundles. There is one connection amongst HostA and B; its transmisiion

rate is 2 Mbps and its proliferation postponement is 10 msec. When Host

An assembles a bundle, it sends it to Host B. When Host B gets an

whole parcel, it changes over the bundle\'s bits to a simple flag.