Patent ID: 7674046

Claim:
A keying system for providing selective interconnection between one of a set of related receptacle sockets and one of a set of related connector plugs, each of the set of connector plugs terminating an optic fibre, each of the set of connector plugs adapted for insertion into a matching one of the set of receptacle sockets, the keying system comprising: a set of raised bosses, each of said bosses configured to one of a plurality of predefined boss keying geometries; and a set of cavities, each of said cavities configured to one of a plurality of predefined cavity keying geometries; wherein a unique one of said set of bosses is in each of the set of receptacle sockets and a unique one of said set of cavities is in a forward end of each of the set of connector plugs; wherein one of said predefined boss keying geometries matches one of said predefined connector keying geometries; and wherein only when said boss keying geometry matches said cavity keying geometry can said boss be inserted into said cavity thereby interconnecting the connector plug with the receptacle socket.