elements are arranged in the region of the through opening according to this invention at least one of the cable maintaining devices or at least two groups of cable maintaining devices can be connected to the maintaining device independently from one or more of the remaining cable maintaining devices by connecting elements which are associated with the cable maintaining devices in order to improve the ease of mounting of this type of device application_number US 8385006 A description a holding device 10 embodied as a one piece plastic injection molded part is shown in fig1 to 4 with lateral elements 12 and 13 extending in the linear and transverse direction the holding device 10 forms a frame 11 that surrounds a feed through opening 14 in this case the feed through opening 14 is only bordered by a support section 15 which projects at a right angle away from the lateral elements 12 13 on its front the support section 15 has positioning receptacles 16 designed as recesses that are spaced apart from each other in a modular dimension as fig3 shows clamping pieces 17 are formed on the lateral elements 12 in the connecting area of the support section 15 here the clamping pieces 17 extend continuously between the lateral elements 13 and their.