Noticing the little two eyes over the voice one, I think that would be a fun way to indicate if you were you were to run a POTS line over Ethernet, too. Not only would it look like a little guy with his mouth open, but it would also be a reminder that only two pins in that port are connected. (You can actually connect a phone line to a jack like that and just plug an old phone cable into the middle of the port and it will work)