2.3 The Physical Layer : Transmission Media

• common communications media include:

  wireless
  

  • line of sight transmission
  • eg, satellite
  wired metallic:

  • twisted pair
  • baseband coax
  • broadband coax
  wired non-metallic:

  • optical fibre

• physical interfaces : RS-232-C and EIA-232-D

Next slide

Back to first slide

View graphic version