Experiment 1: Uplink inter-arrival times - What is going on?

Transcript

Well, if we look at when those spikes occurred, they occurred at these frame numbers - that represents this relative difference in time in seconds. And we noticed that the difference in the time here is roughly 600 seconds.  And the answer to the question is: "What's going on every 600 seconds?"  Well, it turns out that's going to be when a DHCP request occurs.  So since the box this is going through is an analog telephone adapter every 600 seconds, it is going out and making a DHCP request.  When it does that, it disrupts the inter-arrival time of the audio packets by quite a lot - we see here it's 25 milliseconds.  Our packets for only twenty milliseconds in size, so this is a very substantial change to traffic.