A handhole is a small, underground utility vault or access point designed to allow maintenance personnel to access buried infrastructure like fiber optic cables, electrical conduits, or telecommunications lines. Whether you're installing fiber optic cables, maintaining power lines, or upgrading broadband networks, handholes offer safe, accessible, and cost-effective access points for underground utilities. The most commonly used handholes. Handhole & Manhole in Fiber Optic Networks Fiber optic networks form the backbone of modern telecommunication systems, enabling high-speed data transmission across long distances. Proper placement minimizes signal loss, simplifies installation, and supports sustainable growth.