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  1. Decibels in the context of ADSL The decibel The decibel is a logarithmic unit which specifies the ratio of two powers. It was devised by the Bell Telephone Company to simplify calculations of gain and loss in cascaded transmission systems. The original unit was the Bel, and they de... Read More
  2. BT Terminology   You may see BT engineers moving "E side" or "D side" connections. Here's a note about them.. E-SIDE (Exchange Side) - Exchange to PCP D-SIDE (Distribution Side) - PCP to Customers PremisesThe "PCP" is the "Primary Connection Point". These are... Read More
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