so where is the pic of how you went to that one number and searched through the lan there? The phone number is like the router ip address to the private side of the lan...You will connect to the modem, and do the same sort of things you are doing now...
Put the phone number off the terminal into the IP lookup program, and then connect to the new computer that is added to your links. It will give you access to the second half of the LAN.
Yeah, your probe in the first picture is just against the same IP address that you connected to in the first place (public router). When you manually type that phone number you found you will get a new link on your list to connect to the modem