Why does justchimein get through firewalls when Skype, WebEx do not?
Justchimein will attempt to find the most optimal route through firewalls. This means it will first try traditional routes that Skype/WebEx and others use to connect high definition media. However, if those traditional routes are not available justchmein will attempt to use more modern options making use of TCP, WebSockets, TURN and other technologies to connect participants in the meeting. In these cases it is not always possible to achieve HD video quality; however, practical usage connections can still be made.