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AT&T Inc. is an American multinational telecommunications holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. [ 4] It is the world's third-largest telecommunications company by revenue and the second-largest wireless carrier in the United States behind Verizon but ahead of T-Mobile. [ 5]
Text messaging, or texting, is the act of composing and sending electronic messages, typically consisting of alphabetic and numeric characters, between two or more users of mobile phones, desktops / laptops, or another type of compatible computer. Text messages may be sent over a cellular network or may also be sent via satellite or Internet ...
SMS. An SMS message written on a Motorola Razr V3. Short Message Service, commonly abbreviated as SMS, is a text messaging service component of most telephone, Internet and mobile device systems. It uses standardized communication protocols that let mobile phones exchange short text messages, typically transmitted over cellular networks.
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History of AT&T. 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 ...
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Voicemail. A voicemail system (also known as voice message or voice bank) is a computer-based system that allows people to leave a recorded message when the recipient is unable to answer the phone. The caller is prompted to leave a message and the recipient can retrieve said message at a later time. Voicemail can be used for personal calls and ...
The AT&T facility in front of which the bombing occurred, pictured in 2009. The bombing caused structural and infrastructure damage to a nearby AT&T service facility, which contained a telephone exchange with network equipment in it, resulting in AT&T service outages across the U.S., primarily in Middle Tennessee. [26]