Each outlet is then patched into a network switch (normally also rack-mounted) for network use or into an IP or PBX (private branch exchange) telephone system patch panel."
These standards define how to lay the cabling in various topologies in order to meet the needs of the customer, typically using a central patch panel (which is normally 19 inch rack-mounted), from where each modular connection can be used as needed. Structured cabling design and installation is governed by a set of standards that specify wiring data centers, offices, and apartment buildings for data or voice communications using various kinds of cable, most commonly category 5e (CAT-5e), category 6 (CAT-6), and fibre optic cabling and modular connectors. "Structured cabling is building or campus telecommunications cabling infrastructure that consists of a number of standardized smaller elements (hence structured) called subsystems. The vector stencils library "Network layout floorplan" contain 34 symbol icons for drawing computer network floor plans, communication equipment layouts, and structured cabling diagrams.
The clip art example "Rack diagrams - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Rack Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park. They allow for dense hardware configurations without occupying excessive floorspace or requiring shelving." The industry standard rack cabinet is 42U tall.ġ9-inch racks in 2-post or 4-post form hold most equipment in modern data centers, ISP facilities and professionally designed corporate server rooms.
The height of the electronic modules is also standardized as multiples of 1.75 inches (44.45 mm) or one rack unit or U (less commonly RU). Each module has a front panel that is 19 inches (482.6 mm) wide, including edges or ears that protrude on each side which allow the module to be fastened to the rack frame with screws.Įquipment designed to be placed in a rack is typically described as rack-mount, rack-mount instrument, a rack mounted system, a rack mount chassis, subrack, rack mountable, or occasionally simply shelf. "A 19-inch rack is a standardized frame or enclosure for mounting multiple equipment modules.
The vector stencils library "Rack diagrams" contains 33 rack design elements for drawing the computer network server rack diagrams.
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