In a telnet session using a different language, wrong text or characters are being displayed.
Strange characters appear on the screen
First: Ensure that you have a language build installed if you are using a foreign language.(found on website under downloads)
Second: Find out the code page which your server is using.
Third: When configuring your host profiles select the language tab at the top and match the Server Language with the code page that your server is using.
Also in most cases the Display Language can be left at default, the telnet session will attempt to auto select the display language.