A fiber optic receptacle and plug assembly adapted to be mounted within an opening through a wall of a connection terminal. The receptacle and plug define complimentary alignment and keying features for ensuring that the plug is mated with the receptacle in a predetermined orientation. An alignment sleeve...http://www.google.com.au/patents/US7264402?utm_source=gb-gplus-sharePatent US7264402 - Multi-fiber optic receptacle and plug assembly
