I’ve been trying to useorg.apache.commons.net.telnet.TelnetClient and I am having trouble to receive non-ASCII characters (in my case polish chars like ą,ę,ć,ź and few others). The problem is not on server side – when I use default Ubuntu telnet implementation or Putty I have no problem receiving non-ASCII characters. My code looks something like this (simplified a bit for readability): I