I have another question:
What does the rotary-encoder push/click do? I can't see any function that uses it, yet it's there. It's a push button. They could have used it either for Timer On/Off when you have it highlighted, or to move to the next element when dialling in stuff. Actually the only thing I can see that it does is confirm the IP address settings if you push it while in one of the ip/netmask/gateway fields.
Ooh nevermind I see, it gives you a special emergency firmware upgrade power-on thing
Oh, and the file store/recall.