From Sekai

TeamSpeak is flexible, powerful, scalable software which enables people to speak with one another over the Internet.
SekaiRO got its own Team Speak 3 server which deliveries perfect sound quality at low resource costs, usually 3kb/sec.
You're free to tell your friends about it and free to use it as you wish. It has plenty of slots to use.

Configuration

• Address: ts.sekai-ro.net
• Port: 9987

Download

You'll need to download Team Speak 3 to be able to connect to our server, its free of charge.

How to Connect

Open your Team Speak 3 Client, then go to Connections->Connect, like following picture describes.
->
Then a new window will popup, you'll need to input the Address, the Port and your Nickname - leave password field blank - then hit Connect and your done!