RCDD TDMM CHAPTER 5) HORIZONTAL DISTRIBUTION SYSTEMS WITH VERIFIED SOLUTIONS

Access Point (AP) 1) The point of entry into a secure area. 2) A stand-alone hardware device or a computer wireless adapter with software that acts as a wireless communication hub for users of wireless devices to connect with each other and to bridge those devices to the cables portion of the network. ADA Americans with Disabilities Act; US Federal law enacted in 1990 that guarantees equal civil rights for people with disabilities ; ensuring they have access to public entities and gov't facilities. Affects some telecom cabling, design, and installation. AHJ Authority having jurisdiction; the building official, electrical inspector, fire marshal, or other entities responsible for interpretation and enforcement of local building and electrical codes Alternating Current (AC) A current flow that alternates periodically (usually sinusoidal) in magnitude and direction. CP Consolidation Point; an interconnected point within a horizontal cabling system EF Entrance Facility; an entrance to a building for both public and private network service cables, including wireless, mechanical, and electrical services, and the entrance point at the building wall, and continuing to the entrance room or space. Also called a service entrance. EMI Electromagnetic Interference; Radiated or conducted EM energy that has undesirable effects on electronics equipment or signal transmissions ER Equipment Room; 1) An environmentally controlled centralized space for telecom equipment that usually houses a main or intermediate cross connect (TIA) 2) An environmentally controlled space for telecom and data processing equipment supporting communications connectivity infrastructure HC (FD) Horizontal Cross-connect/ Floor Distribution; A group of connectors (EG patch panels, punch down blocks) that allow horiontal, backbone, and equipment cabling to be cross connected with patch cords and jumpers. IC (BD) Intermediate Cross connect/ Building Distribution; the connection point between a backbone cable that extends from the main cross connect (MC/ CD/ First level backbone) and the backbone cable from the horizontal cross-connect (HC/ FD/ second level backbone) MC (CD) Main Cross Connect/ Campus Distribution; the cross connect normally located in the main equipment room for cross connection and interconnection of entrance cables, first level backbone cables, and equipment cables. MUTOA Multiuser Telecommunications Assembly; grouping in one location of several telecom outlets/ telecom connectors PON Passive Optical Network; a point to multipoint network architecture in which unpowered optical splitters are used to enable a single optical fiber strand to serve multiple endpoints. TE Telecom Enclosure; a box or cabinet used to house telecom equipment. Enclosures are often wall mounted but sometimes large enough to be floor mounted. Telecommunications Outlet Box A housing used to hold telecommunications outlets/ connectors Telecommunications Outlet/ Connector A connecting device ( EG; balanced twisted pair outlet, optical fiber connector/adapter) in the work area on which the horizontal cabling terminates TP Transition point; a location in the horizontal cabling where flat undercarpet cable connects to round cable TR Telecom Room; A telecom space that differs from equipment rooms (ERs) and entrance facilities (EFs) in that this space is generally considered floor serving or tenant serving (as opposed to building or campus serving) space that provides a connection point between the backbone and horizontal cabling. UTC Undercarpet Telecommunications Cable; Flat, low profile cabling designed to be installed directly on the surface of a floor and covered with carpet or tiles. VOIP Voice over IP; a system in which voice signals are converted to packets and transmitted over a network using transmission control protocol/ internet protocol (TCP/IP) WLAN Wireless Local Area Network; a LAN that functions wirelessly between the client and a wireless access point (WAP). Most modern WLANs are based on IEEE 802.11 standards marketed undder the WiFi name. Name 3 components of a horizontal distribution system. 1) Horizontal Cabling 2) Horizontal Pathways supporting the horizontal cabling 3) Telecommunications spaces that support the horizontal capathways. True or false; the use of the term horizontal in the name of an element requires the element to be placed parallel to the ground floor. False. How are horizontal pathways used? To distribute, support, and provide access to horizontal cabling and its associated connecting hardware between the telecommunications outlets/connectors and the HC (FD), typically located in the ER, TR, or TE What is horizontal cabling? The media contained within horizontal pathways. What is the purpose of a continuous horizontal pathway? To provide uninterrupted support and management of telecom cabling What is a non-continuous horizontal pathway? The space between cable supports through which cables are placed between physical supports or containment components Name 4 applications that can be supported by horizontal cabling systems 1) Voice 2) Data 3) A/V 4) Building Signaling Systems/ BMS True or false; horizontal cabling is often less accessible than backbone cabling. True. Horizontal cabling is often less accessible than backbone cabling. As a result, making changes can become time intensive and expensive. What is the required topology for horizontal cabling? Physical star topology Name 3 exceptions to a requirement to use a physical star topology for horizontal cabling 1) A cp or MUTOA is used to connect to open office cabling 2) A TP is required to connect undercarpet cabling 3) Centralized optical fiber cabling is implemented from the MC (CD) to the work areas.