AVAYA LST1U-072/7 FIBER OPTIC SHELF 105-335-871 The LST1U-072/7 Fiber Optic Termination Shelf is used for direct termination of buffered building cables or outside plant cables (OSP). This standard shelf is most commonly used with the LGX* Frame and is cabled from the rear with front jumper access. The mounting panel supplied with the shelf can mount up to (12) twelve 6-packs for a termination of 72 fibers.