You have to speak consumerese. To the consumer there are two jacks in the wall, one for phone and one for internet. He does not suspect there is a LAN. For "internet" therefore read "data". That old ATT guy probably put in coaxial cable thinking it was the latest for the LAN. Ethernet 10Base5, 10Base2, Token Ring, Arcnet, DecNet, and others all used coax in a loop-thru arrangement. Anyone remember those? Twisted pair LAN came later. If you wanted the latest you got Cat-3 installed for your phone and your data. Of course phone only requires Cat1 aka Cat0, but the FCC and others pushed Cat3 for phone so it would be in place for data.
