Page "AppleTalk" Paragraph 52

Other physical implementations were also available.

One common replacement for LocalTalk was PhoneNet, a 3rd party solution ( from a company called Farallon, now called Netopia ) that also used the RS-422 port and was indistinguishable from LocalTalk as far as Apple's LocalTalk port drivers were concerned, but ran over the two unused wires in standard four-wire phone cabling.

PhoneNet was considerably less expensive to install and maintain.

Ethernet and Token Ring was also supported, known as EtherTalk and TokenTalk respectively.

EtherTalk in particular gradually became the dominant implementation method for AppleTalk as Ethernet became generally popular in the PC industry throughout the 1990s.

Besides AppleTalk and TCP / IP, any Ethernet network could also simultaneously carry other protocols such as DECnet, NetBEUI, and IPX.