- Computer network
- ARPANET
- Ethernet
- Internet
- Wireless network
- Public switched telephone network
- Packet switching
- Radio network
- Television network
- Analog signal
- Digital
- Optics
- Nyquist rate
- Nyquist ISI criterion
- Pulse shaping
- Intersymbol interference
- Twisted pair
- Coaxial cable
- Optical fiber
- Broadcasting
- Radio frequency
- Communications satellite
- Wireless LAN
- Simplex
- Duplex (telecommunications)
- Return channel
- Two-way alternating
- Two-way simultaneous
- Time-division multiplexing
- Statistical multiplexing
- VoIP