cable tray

A physical infrastructure component — a rigid, open or enclosed channel mounted overhead, underfloor, or along walls — used to route, support, and protect bundles of network, power, and telecommunications cables across a facility. In information security and compliance, cable trays function as a **physical safeguard for transmission media**: by enclosing cable runs in a structured, identifiable pathway, they reduce the risk of unauthorized access, physical tampering, accidental damage, and eavesdropping on unencrypted signals traversing those cables. Standards frameworks (NIST SP 800-53 PE-4, NIST SP 800-171 §3.10.2, ISO/IEC 27001 Control 7.12) enumerate them alongside locked wiring closets, conduit, and wiretap sensors as co-equal controls for protecting cabling infrastructure — making the phrase **compositional** in origin (it describes the physical object) but **used as a recognized term of art** within the physical-protection control family whenever physical access control over transmission media is addressed.