Indoor fiber optic cables are made for use inside buildings. They last longer and work better outside in hard places. In this guide, we'll break down the key distinctions, pros and cons, and practical use cases to help you determine. Indoor and outdoor fiber optic cables are two structural categories defined by their installation environments. 87, IEC 60794, and ISO/IEC 11801, these cables differ in jacket materials, mechanical protection, water-blocking structures, allowable bend radius, and. However, when it comes to choosing the right fiber optic cable, many overlook the crucial distinctions between indoor and outdoor applications.