Original Farallon rj11 terminator for use with PhoneNET PN208 adapter. A terminator is required at the end of each network chain. PhoneNET is an alternative (AppleTalk physical layer) to Apple's LocalTalk cabling system. Developed by the Berkely Macintosh User Group and brought to market by Farallon, PhoneNET allows AppleTalk networking over cheap or existing rj11 telephone cabling.