I am trying to find a way to establish a high quality video phone connection between two kubuntu computers. One of the computers will be behind a firewall at a fixed IP but an ssh-port can be opened to it such that direct connections can be established in principle.
Skype or Google phone did not give me satisfying results so-far, even if the connection speed should have been high enough.
Are there any free sip-providers which support video telephony such that it can be set up with kubuntu soft phones? Or is there a way to make calls directly through an ssh-tunnel? Both computers can be set up with required software and it is not an issue to be able to call other devices or people.