LocalTalk was always technically the cabling system that Apple developed. It uses a 4 wire round cable and connects to a box that connects to the serial port of the Mac (traditionally the printer port) PhoneNet/TeleNet/TeleTalk was always technically the cabling system that used 2 wires in a phone cable to connect. I believe this was first developed by TOPS, but I'm probably wrong. Also connected to an adaptor that connected to the serial port. Serial was always technically the cabling system where you take a mac printer cable and connect two macs together with it (AppleTalk over Serial... wonder why it was never refered to as SerialTalk) Localtalk has been perverted into meaning any of the above topologies, and any others that use the serial port on the Mac. And Farallon perverted the PhoneNet name by using it in one of their ethernet cards (PhoneNet EN) -chris <http://www.mythtech.net>