4 ms·

ADSL is designed to use frequencies beyond the range of human hearing.

• mjmas 4mo ago
  Similar to wifi et al using light beyond the range of human seeing.
  • rahimnathwani 4mo ago
    We don't talk about wifi using light waves.
    • jambalaya8 4mo ago
      worrying we don't.
• deleted 3mo ago
  [deleted]