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#1 Posted : Wednesday, March 25, 2020 3:54:44 AM(UTC)

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During the Corona crisis a lot of our clients are working from home. We have noticed that many tend to be connected via VPN into their corporate network, which in turn have firewalls that prohibits the use of ports necessary for vMix Call. Easy fix is to ask the howeworker to disable their VPN when they participate in a vMix Call session. More complicated fix is to ask the network admin to open the firewall, see https://www.vmix.com/kno...ll-firewall-requirements
thanks 1 user thanked richardgatarski for this useful post.
dmwkr on 3/27/2020(UTC)
Scott Barnett  
#2 Posted : Monday, March 30, 2020 8:21:19 AM(UTC)
Scott Barnett

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Good point. I have been testing with three to four call participants and getting a lot of latency. I have since made the changes to the network based on that link, but after setting, does vcall NOT use the default 10349 anymore? I had figured our calls were getting delayed by routing, so does using these other ports make the vcall "smarter" and it does not use 10349 if you have the others available?

#3 Posted : Monday, March 30, 2020 4:09:23 PM(UTC)

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10349 is the port of our servers, so if that is the only port open in the firewall, the call is forced to use our servers rather than directly.
Direction connections can use a random UDP port in the range specified in the knowledge base article, so allowing outbound UDP without restriction is the best
way to ensure good call quality. (which is what pretty much all residential modem/routers do, it is only corporate firewalls with very restrictive policies where UDP is completely blocked that tend to cause the most issues)
#4 Posted : Monday, March 30, 2020 4:36:34 PM(UTC)

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I have made very good experiences with using a mobile phone with larix broadcaster over SRT. Most users can even use 4G data plans for short transmissions. And phones are not that much restricted.
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