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2. AT&T Internet - Wikipedia

   en.wikipedia.org/wiki/AT&T_Internet

   AT&T Internet provides internet access to computers connected on-premises via Ethernet cabling or Wi-Fi from the included residential gateway or DSL modem. AT&T Fiber, or as it is known AT&T Internet powered by Fiber, provides fiber to the home (FTTH) service in select markets. Historically a form of AT&T Fiber Internet launched in the fall of ...

3. Dial-up Internet access - Wikipedia

   en.wikipedia.org/wiki/Dial-up_Internet_access

   Dial-up Internet access is a form of Internet access that uses the facilities of the public switched telephone network (PSTN) to establish a connection to an Internet service provider (ISP) by dialing a telephone number on a conventional telephone line. Dial-up connections use modems to decode audio signals into data to send to a router or ...

4. Mobile broadband modem - Wikipedia

   en.wikipedia.org/wiki/Mobile_broadband_modem

   A mobile broadband modem, also known as wireless modem or cellular modem, is a type of modem that allows a personal computer or a router to receive wireless Internet access via a mobile broadband connection instead of using telephone or cable television lines. A mobile Internet user can connect using a wireless modem to a wireless Internet ...

5. Modem - Wikipedia

   en.wikipedia.org/wiki/Modem

   v. t. e. A modulator-demodulator or modem is a computer hardware device that converts data from a digital format into a format suitable for an analog transmission medium such as telephone or radio. A modem transmits data by modulating one or more carrier wave signals to encode digital information, while the receiver demodulates the signal to ...

6. Network interface device - Wikipedia

   en.wikipedia.org/wiki/Network_interface_device

   Network interface device. In telecommunications, a network interface device ( NID; also known by several other names) is a device that serves as the demarcation point between the carrier's local loop and the customer's premises wiring. Outdoor telephone NIDs also provide the subscriber with access to the station wiring and serve as a convenient ...

7. T-carrier - Wikipedia

   en.wikipedia.org/wiki/T-carrier

   T-4 and T-5 used coaxial cables, similar to the old L-carriers used by AT&T Long Lines. TD microwave radio relay systems were also fitted with high rate modems to allow them to carry a DS1 signal in a portion of their FM spectrum that had too poor quality for voice service. Later they carried DS3 and DS4 signals. During the 1980s companies such ...