Parameters of EIA / TIA 568

A guide to the parameters and specifications of the EIA / TIA 568 standard.

• Up to 50,000 users
• Facilities up to 10 million square feet
• 90 meter horizontal distance limit between closet and desktop
• 4 pairs of conductors to each outlet--all must be terminated
• 25-pair cables may not be used (crosstalk problems)
• May not use old wiring already in place
• Bridge taps and standard telephone wiring schemes may not be used
• Requires careful installation procedures
• Requires extensive testing procedures