m26k9,
One of the problems with using the telnet protocol is that there is handshaking that goes on between the client and server. The handshaking involves strings of bytes sent back and forth.
You should be able to work around this by using a different port than 23. Most telnet clients suppress the handshaking when using a port other than 23.
For example, change:
Server server = Server(23);
To:
Server server = Server(1023);
and when you start up the telnet client, type:
telnet 192.168.0.20 1023
Regards,
-Mike