telephone networks
Connected calling infrastructure
Telephone networks are interconnected systems that transmit voice and data between telephones across distances.
The term encompasses everything from early switchboard operations to modern digital infrastructure.
A telephone network includes the physical cables, switching centers, and routing protocols that connect calls: The telephone network was overloaded after the earthquake.
With mobile phones, the network extends to cell towers and wireless signals.
- mobile networksWireless communication infrastructure
- telegraph linesElectrical message transmission cables
- cellular networksWireless communication infrastructure for phones
- voicemailRecorded caller messages
- phone treeCascading contact system
copper wires · wireless networks · toll-free numbers · calling card · cordless phones · land line · phone lines · area codes · telecommunication · routers · base stations · PSTN · call forwarding · coaxial cable · mobile phones · call waiting · satellite networks · handset
- infrastructurehighways, road construction, railway expansion, power grid, roads
- networksMAN, PAN, cloud computing, router, Wi-Fi
- Soviet infrastructurefactories, power plants, railways, housing blocks, coal mines
telephone networkspostal service
National mail delivery system
telegraph networks · written correspondence · courier services · smoke signals · semaphore
telephone networkscommunication blackout
Total loss of contact
radio silence · disconnection · isolation · incommunicado · dead zones