Notes for Team 1

(From September 25 meeting with Prof. Keshav)

Remarks

Questions

  1. Should we use the simulator or the real internet? Start coding on the simulator where you can introduce arbitrary delay and distance. The final project implementation will be on the real internet.
  2. How can we use the real internet when we can't ship UDP packets through the firewall? Prof. Keshav will put up an audio machine outside the firewall if necessary. Do most of your work on the simulator. Or, run entirely within the firewall.
  3. What timestamps does RTP use? It uses those of the sender. You can use RTSP to sync timers and clocks. These days PC's do not gain or lose time very much, so syncing up time stamps is not likely to be a big problem.
  4. How bad is dropping packets to the audio? Dropped packets cause a pause, which is not audible if less than every 10 seconds or so.