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AT&T is a multinational telecommunications holding company headquartered in Dallas, Texas, and a leading provider of mobile services in the US.
Services AT&T delivers most internet service over a fiber-to-the-node (FTTN) or fiber-to-the-premises (FTTP) communications network. In the more common FTTN deployment, fiber-optic connections carry all data (internet, IPTV, and voice over IP) between the service provider and a distribution node. The remaining run from the node to the network interface device in the customer's home uses a ...
BellSouth Telecommunications, LLC was an operating company of AT&T that served the southeastern United States. It consisted of the operations of Southern Bell and South Central Bell.
The history of AT&T dates back to the invention of the telephone. The Bell Telephone Company was established in 1877 by Alexander Graham Bell, who obtained the first US patent for the telephone, and his father-in-law, Gardiner Greene Hubbard. Bell and Hubbard also established American Telephone and Telegraph Company in 1885, which acquired the Bell Telephone Company and became the primary ...
AT&T, T-Mobile, Verizon, Boost Mobile, and UScellular also sell SIM cards through their retail channels, both in-store and online. The top five wireless providers operate nationwide wireless networks which cover most of the population in the United States, while smaller carriers provide native network coverage across selected regions of the ...
AT&T Corporation, commonly referred to as AT&T, an abbreviation for its former name, the American Telephone and Telegraph Company, was an American telecommunications company that provided voice, video, data, and Internet telecommunications and professional services to businesses, consumers, and government agencies.
This list identifies the largest telecommunications companies by total revenue. For a more thorough list, see the By region section.
Verizon, for example, charges a $10 "agent assistance fee" when you pay your bill by calling its customer-service line. AT&T and T-Mobile charge to pay via human, too.
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