FIELD: laying of reserve lengths of optical fibers. SUBSTANCE: the cartridge has a plate carrying two cradle boards for fixing of sleeves. Each board is made with rows of posts of different height fixing the sleeves of optical fiber splices in each seat in two stories. The posts are positioned with a shift in each row along the sleeves. The sleeves of the lower row are fixed in the cradles with the aid of low posts. The sleeves of the upper row are spring-loaded by the high posts in their seats to the middle posts and to the lower story of the sleeves. EFFECT: enhanced reliability of fixing of sleeves under the action of vibratory loads. 3 cl, 3 dwg
