Technical References

TIA/EIA-568-A Standards

Network standard: TIA/EIA-56-A
TIA/EIA-568-A "commercial building telecommunications cabling standard"

• Planning and installing of structured wiring systems
• Cable specification, performance and installation requirements
• Physical star topology
• Cabling divisions
  • Horizontal
  • Backbone

Horizontal

• Cabling installed between the telecommunications closet and wall outlet
• Maximum distance of 295' from closet to outlet with 10' for workstation jumpers & 23' for cross connect jumpers and patch cords
• Two wall outlets per workstation
  • One cable must be 4 pair UTP
  • Other cable can be any on of the recognized media
• Recognized media
  • 4 pair, 100 Ohm UTP
  • 2 pair, 150 Ohm STPA
  • 50 Ohm Coax, not recommended for new installations
  • 62.5 µm Fiber

Backbone

• Cabling between equipment rooms, entrance facilities and telecommunications closet
• Conventionally, vertical shaft cable; but also used in a Star Topology in a campus type network
• Recognized media
  • 100 Ohm Multipair UTP
  • 150 Ohm STPA
  • 50 Ohm Coax, not recommended for new installations
  • 62.5,um Fiber
  • Single mode Fiber