US Patent 7194183 Modular receptacle assembly and interface with integral optical indication

A modular receptacle assembly includes integral optical indication. The receptacle assembly includes a module housing one or more receptacles configured to releasably receive, in an insertion direction, a leading portion of a modular plug. A light pipe having proximal and distal ends, is disposed in the footprint of the module. The proximal end is coupled to the receptacle, and the distal end is coupled to a light source. The proximal end is configured to radiate light onto the leading portion of a plug disposed within said receptacle. An actuator is configured to selectively operate the light pipe.