Comments by "American Spirit" (@americanspirit8932) on "ATu0026T Archives: Link to the North" video.

  1.  @mspysu79  it's called time division switching, you can transmit thousands of phone calls on a single coaxial cable or Fiber Optic, depending on the central office, number for ESS first digital electronic switching system for transmitting, long distance, or like a tandem office, number five ESS first Digital Electronics which system with fiber optics.
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