The TeamSpeak server currently supports Microsoft Windows, Mac OS X and Linux and uses a web based or telnet interface to control server administration and settings. The server runs as a dedicated server separate from the client. As of 2013 TeamSpeak does not support IPv6.
TeamSpeak 2 supports virtual server instancing. This allows up to 75 server instances to be contained in one process on the server. Additional server processes can be run to increase this further.[2]
Teamspeak can be used as a free software, if someone wants to block other users from joining in a server however, he has to pay some money per month. The minimum is $6 per month for up to 15 users.