PURPOSE: To extended to a size to meet processing capacity without waste and to easily replace an electronic unit placed therein after a communication equipment is system-operated in a device rack structure for the equipment. ;CONSTITUTION: A pair of side frames 5 laterally symmetrical and having stackable structures and a framework assembling structure 9 having shelves 1 and covers 10 to be mounted therebetween via screws 7 are stacked by another framework assembling structure 5 and bolts 8 of the same structure. A boxlike ceiling plate 11 is coupled fixedly to an uppermost stage and a boxlike bottom plate 12 is coupled fixedly to a lowermost stage in a device rack 13.;COPYRIGHT: (C)1993,JPO&Japio
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