Some splice closures have all cables entering into one end, usually called dome closures or sometimes called a butt closure, while some have cable entries on both ends, sometimes called inline closures. The selection of the appropriate fiber optic splice closure can be a very daunting task. There are many possible ways to put two or more cables together or drop a single fiber at a location. Engineered for fast installation and long-term durability, the FOSC portfolio—including modular solutions with gel-sealed. Fiber splicing is unavoidable in real-world deployments. Cables must be joined due to route length limitations, branching requirements, repairs after damage, or network upgrades.