There are four classes of administration that all cabling systems fall within.
Class 1 is for systems within a single building having only one Telecommunications Room (TR) that all workstation cabling runs to. The TR, Horizontal links (Hl’s) and Telecommunications Main Grounding Busbar (TMGB) are required to be labeled and administered. If the system owner wishes to document pathways or firestopping locations, Class 2 administration should be used.
Class 2 is for systems within a single building that are served by multiple TR’s. Class 2 includes administration for backbone cabling, multi-element grounding & bonding, firestopping as well as all the items within Class 1.
Class 3 is for systems spanning multiple buildings, known as a campus environment. Class 3 includes administration for buildings and inter-building cabling as well as all elements of Class 2. Administration of Pathways, Spaces and Outside Plant elements is recommended.
Class 4 is for systems spanning multiple campuses, known as a multi-site system. Class 4 included administration for each site as well as all elements of Class 3. Administration of Pathways, Spaces and Wide area network