PROSCEND COMMUNICATIONS INC. ALL RIGHTS RESERVED. 1 CASE STUDY Proscend Long Reach Power over Ethernet (PoE) Solution for Transportation in France. Background RATP, a state-owned public transport operator and maintainer in France needed to automate and modernize the century-old metro lines in Paris without interrupting traffic. One of the projects is the installation of appropriate audio-visual systems, notably video surveillance on board trains. Challenges RATP runs a mission critical networks in Paris underground where thousands of people are traveling every day. Building a secured and reliable network for live video streaming at hundreds of IP Camera locations was a big challenge. While using PoE is a possible solution, it has a natural limitation of 100 meter

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