A video conference application wants to keep the end-to-end packet delay below 200ms, and at a rate
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Question:
A video conference application wants to keep the end-to-end packet delay below 200ms, and at a rate of at least 1Mb/s. The packets are all 10,000bits long and pass through 9 routers (and therefore across 10 links), and all the links are 200km long and run at 10Mb/s. At each router along the path, the video packets are placed into their own queue, which is served at a guaranteed minimum rate. Considering all the packetization, propagation and queueing delays in the system, how much buffering should be in each router, in terms of packets? You can assume each router has the same amount of buffering, and the speed of propagation is 2 x 10 8 m/s.
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