Fiber optic splicers install, maintain, and repair fiber optic cabling, such as for phones, internet, or television, or other telecommunications cabling. As a fiber optic splicer, also referred to as a telecommunications line installer and repairer, you install aerial and underground cabling, pull it through a conduit, and set up other necessary equipment for service. Your primary responsibilities are to ensure that all cabling is connected properly to prevent any data loss or failed connections. Other duties may include helping customers to set up new service, consulting with construction crews, and troubleshooting problems on existing network lines.