Henk Uijterwaal <henk.uijterwaal@xxxxxxxxx> wrote: > On 21/10/2011 16:54, Simon Pietro Romano wrote: > >> I can state for sure that we have used Meetecho for remote >> presentations in Hiroshima, in the mediactrl WG meeting: interaction >> happens in real-time. I don't have enough experience with Meetecho to guess what "real-time" means here. I have heard folk seriously claim that ten-second delay is still "real-time". > Actually, this is true for all tools that I've seen, but it isn't > perfect yet and I wonder if it will ever be. "Perfect" probably isn't a useful concept. Brian Rosen tells us that 150 milliseconds is "barely good enough" -- in my experience there's a great-wall-of-china effect at about one-second delay: when it goes beyond that folks get really exasperated trying to get their ideas out in a timely fashion. 150 milliseconds is a real challenge to accomplish worldwide, though it's quite achievable within one continent. I expect IETF folks could learn to work with 250 milliseconds. But terms like "real-time" and "perfect" don't help. Can we avoid them? -- John Leslie <john@xxxxxxx> _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf