Application: The transmission method of which is supported by telecom cabling such as 100Base-TX Ethernet or digital voice. Dark Fiber: A fiber carrying no light, it is common when extra fiber capacity is installed Plenum: The air handling space between walls, under structural floors, and above drop ceilings when used to circulate and otherwise handle air in a building. Riser: A space for indoor cables that allow cables to pass between floors, normally a vertical shaft or space. RIP cord: A length of string built into optical fiber cables that is pulled to split the outer jacket of the cable without using a blade Core: Anything that is found within the sheath, usually just the twisted pairs. Commonly referred to incorrectly as the core, when actually it’s the conductor. Attenuation: A general term used to indicate a decrease in power from one point to another . Noise: Electromagnetic energy that interferes with the desired signal normally present in or passing through the system. Headroom: The number of decibels by which a system exceeds the minimum defined requirements. ANSI: American National Standards Institute –encourage voluntary compliance with standards and methods. NFPA: National Fire Protection Association- they help reduce the risk of fire through codes , safety requirements, research , and fire-related education. FCC: Federal Communications Commission- 7 commissioners appointed the president of the USA that have the power to regulate electrical-communications systems that originate in the United States. NIST: National Institute of Standards and Technology- assist in the improvement and development of manufacturing technology, improving product quality and reliability. OSHA: Occupational Safety and Health Administration- as a division of the US department of labor, they pass and enforce laws designed to protect employees from many types of job hazards. Equipment room: A centralized space for telecommunications...
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