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AT&T J-carrier Line Spectrum diagram

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  • Albert LaFrance
    From Wayne Weishan, showing how an open-wire line s bandwidth was allocated among J-carrier with twelve voice channels, C-carrier with three channels, along
    Message 1 of 1 , Sep 7, 2005
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      From Wayne Weishan, showing how an open-wire line's bandwidth was allocated
      among J-carrier with twelve voice channels, C-carrier with three channels,
      along with one channel on the physical (non-carrier) pair:
      http://long-lines.net/tech-equip/misc/J-CarrierLineSpectrum.html .

      Sixteen one-way voice circuits on a single pair of wires - quite an
      accomplishment for that era!

      Albert
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