TeamSpeak Wiki: TeamSpeak Server Channel disappear

When a channel is created, a rake must be set to Permanent. Then the channel is permanently stored on the Teamspeak 3 server. Even if all people have left the channel, it is still there. Depending on the Teamspeak 3 user rights, this can usually only be set by a server administrator.
On TS3 public servers it is usually handled in such a way that as an unregistered user only temporary channels can be created. Otherwise the server would be filled with tens of unused channels at some point.