chamber 18 is formed between an upper housing wall 20 and an internal dividing wall 22 and a second 34 retaining 34 chamber 24 is formed between dividing wall 22 and a bottom surface 26 respectively an axial passage way 16 is formed by matching semi circular 34 cut away 34 portions in walls 20 22 and 26 respectively to allow the placement of a communication cable through the middle of the device 11 a latch 17 such as a pressure clamp or the like is provided to securely attach body halves 12 and 14 a labelling location 13 is provided to track which cable s if any are enclosed within the device 11 in the embodiment illustrated in fig2 a unidirectional cable locking mechanism is provided by a pair of resilient retaining tabs 32 which extend from the interior walls of chamber 24 into the axial passageway 16 by use of triangular shaped ends 34 on each of the retaining tabs 32 a cable placed through the axial passageway 16 will be prevented from longitudinal movement in the direction towards wall 26 while being allowed to pass freely in the direction towards wall 20 best seen in fig4 referring to fig3 and 4 the.