System-Level Fire Resistance

Wiring the world for the Internet age is turning out to be big business. But the new iron that powers this distributed computing machine has to be installed in a physically challenging environment. Ambient temperatures fluctuate over a wide expanse, occasionally the earth moves, and sometimes components catch on fire. What is that environment? Regional Bell Operating Company (RBOC) central offices located across the United States. Those in charge of maintaining the uninterrupted flow of voice and data have developed a comprehensive set of environmental criteria contained in GR-6 3-CORE, "Network Equipment-Building System (NEBS) Requirements: Physical Protection." If you want to make the new iron, then you are going to have to test its temper. In this article we look at the test most likely to cause a meltdown; the system level Fire Resistance test.

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