August - 2008 issue > Technology

By Burt Patton

The Opportunity

Due to its low cost, high degree of flexibility, and standards based interfaces, Ethernet has become the most common data-network technology in the world. PC’s, workstations, info kiosks, POS (Packet Over SONET/SDH), cable set-top boxes, video cameras, industrial PLCs) Programmable Logic Controller) — even elevator control boards — can all be readily found with Ethernet interfaces.

The Problem

For all of Ethernet’s strengths, it does have some limitations that need to be overcome. The first and most limiting factor of Ethernet is its distance limitation, 328 feet (100 meters), set forth by the IEEE 802.3 specifications. This distance limitation forces users to install equipment not where they want it, but where the specification limits them to. In some circumstances this limitation altogether eliminates the possibility of using Ethernet. Another major factor in Ethernet’s limitations is the requirement to use CAT5 or better cabling. Users that have already installed cabling which does not meet the stringent CAT5 specifications must go through an extremely cost prohibitive, and sometimes impossible, process of rewiring their infrastructure.

The Solution

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