Abstract: A telephone jack apparatus which includes a jack body having a plug opening in a front face thereof, terminals in a rear face of the jack body electrically conductively connected to corresponding spring contacts in the plug opening and adapted to receive and conductive association associated respective wires of a telephone cable. a plate affixed to the jack body provides a means for affixing the body to a suitable wall support or receptacle. The entire structure can be installed in a unfinished wall and then after the wall has been completed, a cover plate simply affixed over the socket to complete the installation.

Abstract: An illumination system including a plurality of light guide sections with one end of each disposed proximate an end of at least one other. Each one of a plurality of illuminating couplers is positioned intermediate proximately disposed ends of the sections such that light emitted from each such illuminating coupler enters associated proximately disposed ends of the sections. A pre-selected portion of light conducted down one of the sections towards the proximately disposed end is transmitted past the associated illuminating coupler into another of the sections. The pre-selected portion of light is sufficient to temporarily replace the function of light from the associated illuminating coupler in the event of diminished light intensity therefrom.