Some transmission lines
Two-wire open line
- up to 50 m, (bit rates < 20 kbps)
- susceptible to noise, cheap and simple
Twisted pair
- 1 Mbps at 100 m distances, lower rates over longer distances
- better immunity to noise
Coaxial cable
- e.g. 10 Mbps several hundred meters
- point-to-point and multipoint