Home' RTCA Documents for Review : DO-230H FRAC Contents 269
©2017 RTCA, Inc.
Cabling labeling and installation should conform to Telecommunications Industry Association TIA- 606A,
“Administrative Standard for Telecommunications Infrastructure.”
Advantages of identifying security cabling through labeling include:
Ease of identification reduces maintenance and repair times.
Coding can identify cables to authorized maintenance and repair individuals without providing
identification to the public or other unauthorized individuals. Cables are seldom in the public view,
often hidden; they are typically above a dropped ceiling within a plenum space. Sometimes roof
mounted raceways and cable trays are used to accomplish connectivity.
Color-coding allows system identification without visually identifying the associated access point,
communication line, or piece of equipment.
Identification is valuable and can reduce costs when expanding, renovating or modifying systems
and/or architectural areas. It helps prevent accidental damage or cable cutting by installers and
maintainers of adjacent systems.
The disadvantages of visually identifying security system passive architecture include:
Use of identification can direct vandals or saboteurs to critical systems more easily.
Use of coded identification or generic labeling of security systems/infrastructure can be misleading,
which may be good for protection against vandalism and sabotage protection but can cause
installation and/or maintenance errors.
With the variety of users and levels of service required at an airport, it is critical to use and maintain a
consistent cable documentation system. There are several commercially available programs that track and
document the cable infrastructure of facilities. Redundant infrastructure may be added for different users if
there is no centralized control of the cabling structure within the facility. As various users, such as LAN
systems, concessionaire Point-of-Sale systems, and security equipment, compete for airport cable
bandwidth, spare fibers and conduits will be used on a first-come-first-served basis in the absence of
centralized, thoughtful management and control.
The type of outlet labels specified varies with the severity of the environment in which the outlets are
installed. Where there is substantial risk of vandalism, or significant pollutants are present in the
environment, engraved labels affixed with a high bonding strength glue to the fixed part of the outlet plate
will be required. Examples of such sites include schools and colleges, shopping centers, workshops and
Accurate outlet numbering is of paramount importance to equipment installation after the premises are
occupied, which may take place whilst the final paint touches are still drying on a new fit out. Application
of labels must thus be treated as an integral part of the installation process, and NOT a cosmetic afterthought
to be rectified as a defect sometime in the future.
Outlet numbering follows a standard format which yields a unique outlet number for every socket.
Uniqueness may be achieved by prefixing the sequential number with the distributor ID, to incorporate
building, floor, and rack/hub and patch field codes as applicable. The same full code for each outlet should
be used when marking up outlet numbers on floor plans.
Telecommunication Rooms (TRs)
Design all telecommunication rooms, termination closets, wire rooms, and other components of the passive
infrastructure in as short and direct a line as possible to each other, to minimize cable run length. In multi-
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