NOTE
SOME FRITZ!Box modems require RJ-45 REVERSE POLARITY CAT5 CABLE !
1. Connect LAN board to any PC or Laptop and using this procedure enable DHCP:
http://www.info.kmtronic.com/how-to-change-default-settings-kmtronic-lan-board.html
2. Connect board to FRITZ!Box and check IP board (in this example 192.168.178.20):
3. Click on IP address and open Relay board WEb Server
--- Tested with FRITZ!Box 7390 ---