But Ethernet didn’t start with twisted pair ... The spark came when [Tim Rock] of AT&T realized that the telephone cables already installed in offices around the world could be used for network ...

Connect your phone to your PC with its USB cable ... Wi-Fi network and then connect it to your desktop with an Ethernet cable. Ethernet is how computers connect to the internet through a wire.

Today’s Ethernet cables are mostly CAT6 or higher. Earlier standards, CAT1-5, primarily facilitated telephone lines and voice applications. The earliest CAT cables were limited to voice ...

[Blue Jeans Cable] asserts that this is possible because the Ethernet cable specification is policed via the honor system, allowing manufacturers to be fairly brazen about what they label as Cat 6.