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Document History

  1. TIA TIA/EIA-464-B


    Requirements for Private Branch Exchange (PBX) Switching Equipment

    • Historical Version
  2. TIA TIA-464-C

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    Requirements for Private Branch Exchange (PBX) Switching Equipment

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  3. TIA EIA/TIA-464-A


    Requirements for Private Branch Exchange (PBX) Switching Equipment

    • Historical Version