I installed Jistsi on a 1 GB Linode. I am facing this issue of periodic disconnection. Before that I had issue of HTTPS connection on the server. After installing the SSL certificate, and accessing the site using HTTPS this issue is no longer there. Is there any check for Audio / Video input while maintaining the connection. In my test client configuration, there is no microphone and no video camera connected to the PC.
Welcome to the forum.
Check your firewall to make sure all required ports are open and accessible. Check port 10000/UDP especially; make sure it’s open and properly forwarded, if behind a NAT.
Is this the RAM? If so then 1 GB is too low