Hi Andrea, I do use a root server which is hosted at Hetzner, Nuernberg and I do have a bandwidth of ~2GBit/s. Enough for our school - if the videos are reduced to a small level. Also i Want to investigate if it is possible (and I am nearly sure it is) to get asymmetrical video sizes (teachers % students).
But I am using to go this step-by-step. I think the situation will persist for a longer time and solutions are fast enough if they are available in the next weeks. My thoughts are you cannot provide it for all schools using one server. There must be isle-solutions for each school. I know: there is a lack of knowledge which is grown in the past. But I do not want to think about "why something does not work" but "make it possible". But - of course - the quicker the better :) Greetings Andreas Richter, OBS Sulingen Am Dienstag, 24. März 2020, 19:21:10 CET schrieb Andrea Croci: > Excuse me if I step in the conversation, but this interests me because > I'm also a school teacher from Germany and I obviously have the same > problem like my colleague. > > First of all let me join in thanking Maxim and all others at Apache who > are doing a great job, giving us a great product, answering our > questions in real time and all of this for free. You guys deserve at the > very least the Nobel Prize. > > Now to the question: I read in the bandwidth calculator that for 35 > people with audio-only (camera set to 0) you need an outbound server > bandwidth of 52.360 kbit/s (that's 52 Mbit/s in upload!). And that is > only one class (34 students plus the teacher). Can you imagine if the > whole school wants to do it and has 150-200 people connected at the same > time? (For 100 people the calculator gives 435.600 kbit/s). Does anyone > other than Google, Cisco (with WebEx), Zoom and co. have that kind of > bandwidth? I think for a school it's way too much. Are those numbers > realistic or am I reading something wrong? There over 33.000 schools in > Germany! I hope they don't all come up with the idea to use this for > their lessons. There must be a better way.
