//-->
 



Overview of Structured Cabling Standards
TIA/EIA – 568- A Commercial Building Telecommunications Cabling Standard

Telecommunications Industries Association/ Electronics Industries Association ( TIA/EIA )

This Standard originated as TIA/EIA – 568 in 1991, includes cable and connecting hardware performances and additional STP specifications.
Establishment of this standard is recognized as a substantial accomplishment for it address cabling topologies, distances, channel media and connectors. This standard addresses the following elements of building cabling.

  • Horizontal Cabling
  • Telecommunications Closets
  • Back Bone Cabling
  • Equipment Rooms
  • Work Area
  • Campus

100 ohm Utp Cabling Systems

Recognised categories of cabling and connecting hardware:
Category 3: Categorized upto 10 MHz.

Applications examples:
IEEE 802.5                4Mbps annex ( token ring )
IEEE 802.3                10 BASE – T
                                ( 10Mbps Ethernet )
IEEE 802.3u 100 BASE – T
                                ( 100 Mbps Ethernet )
IEEE 802.12              100 Mbps Ethernet or Token Ring

Category 4: Categorized upto 16 MHz.

Applications examples
IEEE 802.5               16 Mbps UTP Standard
                                 (Token Ring)

Category 5: Categorized upto 100 MHz.

Applications examples:
ANSI X3.263             100 Mbps TP – PMD ( FDDIover UTP )
IEEE 802.3u             100 BASE – TX ( 100 Mbps Ethernet)
IEEE 802.12             100 Mbps Ethernet or Token Ring.

TIA/EIA – 569- A Commercial Building Telecommunications Pathway & space

This standard originated in the year 1990 & is a result of the joint effort of CSA ( Canadian Standards Associations ) & EIA.

This standard address the following elements of Building pathways & Spaces:

  • Horizontal Pathways
  • Telecommunications Closets
  • Back Bone Pathways
  • Equipment Rooms
  • Work Stations.

TIA/EIA – 606- The Administration standard for the Telecommunications Infrastructure of Commercial Buildings

Designed to provide a uniform administration scheme for the telecommunications infrastructure that is independent of applications.

Intended to reduce the large number of incompatible and incomplete administration approaches in existence. Telecommunications administration Areas.

  • Terminations
  • Media
  • Pathways
  • Spaces
  • Bonding/Grounding.

Application Standards/ Basic Topologies

100BASE-T 
The term topology refers to the physical or logical arrangement of a telecommunications system Star topology: A star topology utilizes a central point of control. Each station or device in the telecommunication system communicates via point to point wiring to this central link. In most situations, address recognition is the responsibility of the central control point which then directs the information to the cabling path of the device associated with that address. A star topology is considered the easiest to design and install since each station’s cabling is run directly out from the central location to the appropriate work area.

Token Ring: Token Ring is a 4 Mbps or 16Mbps LAN based on the IEEE 802.5 standard. While this is a logical ring topology, the physical cabling is typically designed through the use of a MAU (multi station access unit) Original specifications called for 150 OHM shielded twisted pair. Today 100OHM unshielded twisted pair is commonly used.

The IEEE 802.3 100BASE-T specification is the standard for Ethernet communications at 100 Mbps over 100 ohm Unshielded Twisted Pair (UTP) cabling. The IEEE 802.3 10BASE-T specification is the standard for Ethernet communications at 10 Mbps over Unshielded Twisted Pair (UTP) cabling.
100BASE-T Option A
The second section of the 100BASE-T standard is known as 100BASE-TX. 100BASE-TX is a specification for 100Mbps Ethernet over 2 pairs of UTP cabling. This format is illus-trated below. This specification also provides for the use of 2 pairs of fibre as an alternative to UTP for transmisson of Ethernet signals. We provide a wide range of copper and fibre products that meet the needs of the 100BASE-TX fibre specification.
100BASE-T Option B
ATM
Asynchronous Transfer Mode (ATM) is an evolving wide and local area network standard for total information transport. ATM is a cell-based packet-switching protocol (OSI Layer Two) that is capable of supporting multimedia traffic at multi-gigabit speeds in the same transmission. ATM runs on fibre-optic or twisted pair media. It offers universal, service-independent switching and multiplexing capabilities.
The standard is divided into two sections each using different active components. The first section, known as 100BASE-T4, is a specification for 100Mbps Ethernet over 4 pairs of Category 3, 4, 5 or higher UTP cabling. Twenty-five pair PowerSum compliant Category 5 cables can be used as long as they are terminated onto IDC contacts on each end.



 
Copyright © Deltafull. All rigts reserved.