Standards

Historically In the past –Proprietary single source components (IBM Token Ring: Single Source Components) –Applications driven (Data Comm’s Engineer LAN systems) Telephone systems Alarm –Mutually incompatible –Often difficult to expand or change post installation

Today –Application / Service friendly Application Data Comm’s Engineer Service Telecommunications Engineer Convergence of Data comm’s and Telecom’s: Voice over IP Structured cabling systems –Ease of Engineering –Compatible and hence lower cost multi source components –Faster installation –Cost effective

ANSI - the American National Standards Institute (USA) TIA - the Telecommunications Industry Association (USA) EIA - the Electronics Industry Association (USA) ISO - the International Organisation for Standardisation IEC - the International Electrotechnical Committee CENELEC - the European Committee for Electrotechnical Standardisation Standards bodies

ANSI/TIA/EIA – 568 and 568 – A / B ANSI/TIA/EIA – 568 –first published in 1999 ANSI/TIA/EIA – 568-A –revised version published in ANSI/TIA/EIA – 568-B –Further revision published in 2001 These standards represented the first comprehensive document on structured cabling and many of their recommendations have been incorporated into standards developed by other standards bodies.

ANSI/TIA/EIA – 568B TIA/EIA-568-B –60 contributing organizations –including manufacturers, end-users, and consultants –Rapid changes in technology drove revisions PC use, Applications, Internet, Broadband, Optical fibre –95’ 99’ 01’ –568-B.1 defines general requirements –568-B.2 focuses on components of balanced twisted-pair cable systems –568-B.3 addresses components of fibre optic cable systems.

ANSI/TIA/EIA – 568B Goals To define a standard to encompass –Design and implementation challenges –For structured cabling systems –Commercial buildings –Campus environments The bulk of the standard defines –Cabling types, Distances, Connectors –Cable system architectures –Cable termination standards and performance characteristics –Cable installation requirements –Methods of testing installed cable

ISO/IEC Initiated in 1990 Published in Its was developed with the co-operation of fifteen nations – the UK, the USA, Japan, Canada, Denmark, Finland, Norway, Sweden, Spain, France, Germany, Holland, Austria, Italy and Belgium. The ANSI/TIA/EIA- 568 standard was used as a basis for the ISO/IEC international standard. Currently on ISO/IEC nd Edition

EN CENELEC adopted a draft version of ISO/IEC –EN formed the basis of a regional European cabling standard –References European standard components rather than International ones E.g. Low Smoke Zero Halogen cables – All national standards within Europe that conflicted with the CENELEC standard were withdrawn upon its publication in 1995 –Latest version EN – 3:2007