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Overview
• What is Structured Cabling?
• Structured Cabling Systems
• Subsystems of a structured cabling system
• Standards bodies
• Standards
What is Structured
Cabling
• Foundation for any communication installation
• An appropriate cabling installation ensures,• Proper operation of equipment
• Manageability
• Organization
• Expandability
Structured Cabling Systems
• Two types of cabling• UTP
• Fiber
• Runs in a star configuration
UTP
• Unshielded Twisted Pair
• Most common media for LAN and Ethernet
• Often used in conjunction with T/P distribution
• UTP is,• Small
• Flexible
• Less expensive
Twist Pitch
• Used in UTP cabling
• Used to identify different length distance of different pairs within a single cable.
• Varies between pairs to reduce the affects of NEXT or signals jumping from one pair to another
• Standard UTP
• Used for patch cable
• Wires/conductors are made of many flexible stands
• Not suitable for longer distances
• Solid UTP
• Used in horizontal wiring
• Less flexible
• More brittle
• Cheaper
• Efficient
Standard UTP vs Solid UTP
Optical Fiber
• Uses light pulses to transmit data
• Impervious to EMI & RFI
• Good for distance
• Offer greater bandwidth
• Consists of a glass core surrounded by a protective coating
SubsystemsTIA/EIA 568A
• Building Entrance
• Equipment Room
• Backbone Cabling
• Telecommunications Closet
• Horizontal Cabling
• Work Area
Entrance Facility
• Pint where outside plant cables and associated hardware brought into the building
• Cables from the outside end in an equipment room which is the main distribution point for the building.
• Often called as the BDF (Building distance frame)
Equipment Room
• A Centralized space for communications equipment.
• Equipment rooms often contain cabling distribution equipment.
• Patch panels and Cross Connect Blocks are used to terminate or end cables and to connect them with other cables and equipment
Backbone Cabling
• Interconnection between closets and equipment rooms within a single building or between other buildings.
• Large building may contain several distribution points
• Telecommunications closets which are necessary to overcome distance limitations.
• Risers are Vertical cable runs which connect telecommunications closets on different floors
Telecommunicati-ons Closet
• A space where horizontal distribution cables are terminated.
• All cable and media types must be terminated on compatible connecting hardware.
• Backbone cables are also terminated in the closet.
• Cross connection is done with jumpers or patch cords to provide flexible connectivity.
Horizontal Cabling
• Physical media used to connect each outlet to a closet.
• Horizontal cables span from telecommunications closets to the wall jacks with which users connect their equipment
• Copper cables, Coaxial Cables and Fiber optic cables may be used.
Work Area
• Connection and cabling on the other side of the telecommunications jack
Standards Bodies
• ANSI: American National Standards Institutes
• TIA: Telecommunication Industry Association
• EIA: Electronics Industry Association
Cabling Standards
• EIA/TIA 568: first version of the standard, 1991
• TSB-36: Technical systems bulletin specification for higher grades (cat 4, cat 5) of UTP
• TSB 40 : UTP Connecting hardware
• CSA T529: Commercial Telecommunications Cabling Standard
• CSA T528: Administration Standard for the telecommunications infrastructure of commercial buildings
References
• Wikipedia. “Structured Cabling” wikipedia.com [Online].
Available : http://en.wikipedia.org/wiki/Structured_cabling
• Linctionaryt . “TIA/EIA Structured Cabling Standards”
linktionary.com [Online]. Available :
http://www.linktionary.com/t/tia_cabling.html
• Paul Rosenberg (2000, Apr. 1). “The Basics of Structured
Cabling”. EC & M [Online]. Available:
http://ecmweb.com/basics/basics-structured-cabling
