Assertion: digital communication | /r/HasProperty | utilized in telephone networks
Facets:
value: for transferring many phone calls
type: PURPOSE
Source sentences:
text: In telephone networks, digital communication is utilized for transferring many phone calls over the same copper cable or fiber cable by means of Pulse code modulation (PCM), i.e. sampling and digitization, in combination with Time division multiplexing (TDM) (1962).