Telecommunications

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Across
  1. 5. an electronic communications network that connects computer networks
  2. 8. on which users create online communities to share information
  3. 9. a device for making, breaking, or changing the connections in an electrical circuit
Down
  1. 1. a telephone line that transmits signals from one station to another directly along a wire
  2. 2. operating by means of transmitted electromagnetic waves
  3. 3. a manufactured object or vehicle intended to orbit the earth
  4. 4. metal in the form of a usually very flexible thread
  5. 6. a comparatively short electromagnetic wave
  6. 7. to send out or transmit by means of radio or television