its a digital loop carrier
Instant telephonic conversation and information exchange.
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Telephones'
Yes.
Telephones were invented in 1876. No major milestone in telephones happened in 2000.
No, it is paid-for DLC.
Traditional telephones are powered by the local telephone exchange and do not need to be connected to a mains supply. Modern telephones often use a separate supply to power the additional features of telephones such as memory diallers, number displays, wireless handsets and so on. Most better designed modern telephones will allow the phone to be used as a basic telephone even when local power is lost. Cordless phones will not work when the home power is lost.
Every single country on earth has telephones.
5,4546,3545.3 telephones
Telephones are about instant communication with other people wherever they are.
Telephones can able to communicate with other telephones through Public Switched Telephone Network, which transmit voice signal over circuit switching technology.