Phone calling is part of the problem and does not solve the issue at hand.
The central issue is that video conferencing software assumes face to face meetings. However if you use video conf for demonstrating anything it all goes to hell due to choppy video and compression.
If you ever extend your software to have stop start system let me know. It will spread like wild fire on developing countries
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FreeConferenceCall[.com] allows to participate in meetings by phone and SMS.
That's beside of typical video/chat conferencing capabilities.
Client is pretty small ~20 Mb monolithic (a.k.a. portable) executable that can be loaded in seconds even on low bandwidth networks.
If someone is interested, here https://terrainformatica.com/2022/02/19/freeconferencecall-a... I've explained how it was done (in 9 months).
Phone calling is part of the problem and does not solve the issue at hand.
The central issue is that video conferencing software assumes face to face meetings. However if you use video conf for demonstrating anything it all goes to hell due to choppy video and compression.
If you ever extend your software to have stop start system let me know. It will spread like wild fire on developing countries