Other physical implementations were also available. A very popular replacement for LocalTalk was "PhoneNet", a 3rd party solution from Farallon Computing, Inc. (renamed Netopia, acquired by Motorola in 2007) 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. Foreshadowing today's network hubs and switches, Farallon provided solutions for PhoneNet to be used in "star" as well as bus configurations, with both "passive" star connections (with the phone wires simply bridged to each other at a central point), and "active" star with "PhoneNet Star Controller" hub hardware. Apple's LocalTalk connectors didn't have a locking feature, so connectors could easily come loose, and the bus configuration resulted in any loose connector bringing down the whole network, and being hard to track down. PhoneNet RJ-11 connectors, on the other hand, snapped into place, and in a star configuration any wiring issue only affected one device, and problems were easy to pinpoint. PhoneNet's low cost, flexibility, and easy troubleshooting resulted in it being the dominant choice for Mac networks into the early 1990s.