To connect to TelBox you simply need a telnet client. For most users, you can connect simply by typing
telnet telbox.net in a terminal/command prompt.
However, most operating systems don't have telnet enabled by default anymore. Below are instructions for getting telnet on MacOS and Windows.
telbox.net for the hostname and hit connect
22.214.171.124 (This may change - do a
dig telbox.net +short on a modern mac to find the current IP)
brew install telnet and you should then be able to run
dism /online /Enable-Feature /FeatureName:TelnetClient and hit Enter to enable the Telnet Client.
telnet as the protocol and enter
telbox.net as the hostname
Once connected to telbox, type
signup <handle> <password> <password-again> replacing the arguments with your desired handle and your password twice. Note that passwords with quotation marks are not recommended because of the way commands are parsed