Infrastructure Design Infrastructure Design
Where from and where to?
Since the first TIA-568 standard ratified in 1990,
structured cabling systems have been based on a star
topology (Figure 1) composed of the backbone and
horizontal link. This design has ensured reliability,
flexibility, ease of management, and a stable base
for developing multiple applications. Today, the North
American ANSI/TIA 568, European EN 50173 and
the international ISO 11801 series share the common
basic design of two layers of backbone with a maximum
90 m horizontal link in a commercial environment.
From basic 10 Mb/s analog phones,
ICT has progressed to 40 Gb on the
horizontal, 400 Gb on the backbone,
and added remote powering via PoE.
November/December 2018 I 7
COVER ARTICLE
By Gautier Humbert, RCDD
