Abstract: A corner shelf securement system for attaching to a pair of walls and forming to a corner joining the walls includes a pair of walls joined together to define a corner between the pair of walls. A board has a bend defining a first section being perpendicular to a second section such that the board is L-shaped. A shelf is coupled to the board, and a plurality of braces is coupled to the board and to the shelf. The plurality of braces support the shelf in a perpendicular position relative to the board. A fastener is mounted on the board and is engageable to the pair of walls such that the bend is positioned within the corner.

Abstract: A signal timing circuit for use in re-timing circuits in digital signal regenerators in long distance telecommunications systems is disclosed. A phase control circuit controls the timing of clock signal relative to digital signals at a re-timing gate by means of a negative feedback loop and a phase shifter. The feed back loop maintains the desired relative timing in dependence upon a reference voltage (V.sub.ref) and a voltage (V.sub.var) obtained from the phase difference of the input digital signals (.phi..sub.i) and the output digital signals (.phi..sub.o) of the re-timing gate.