The details list provides some more information, including extended MAC address, RLOC16 and information about the current children.
The “Talk” button of main page switches the user interface to the talk fuctionality. This app acts either as a server or a client role and talks to each other over a TCP or a UDP protocol.
The server listens to the clients.
The client sends a message to the server and the server echos that message back to the client.