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Talky attempts to establish direct connections between two browsers. Sometimes, this does not work. That is probably the reason you are reading this.
Routers are very common in private residences and small companies. However, they typically prevent your computer from knowing its public address and without knowing this it can not tell your peer where to send the data.
We provide a STUN server so that your browser can tell your peer its public IP address. This is sufficient to establish a connection about 80% of the time.
There are certain types of routers where this does not work. They need a little help from an external server (called a TURN server) to relay the voice and video data. We provide such a server so that more Talky calls will go through.
On mobile networks, such a TURN server is required almost all the time.
Enterprises often use firewalls to protect computers in their network. Sometimes, it is possible to work around such firewalls. For this purpose, we provide TURN relay server running on the standard HTTP
port 80 and
If everything else fails, you can ask your system administrator to open the UDP
port 3478 to turn.talky.io. But we do everything possible to avoid that.