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A typical volume of Bell System Practices from the 1970s. The Bell System Practices (BSPs) is a compilation of technical publications which describes the best methods of engineering, constructing, installing, and maintaining the telephone plant of the Bell System under direction of AT&T and Bell Telephone Laboratories. [1]
The T-carrier is a hardware specification for carrying multiple time-division multiplexed (TDM) telecommunications channels over a single four-wire transmission circuit. It was developed by AT&T at Bell Laboratories ca. 1957 and first employed by 1962 for long-haul pulse-code modulation (PCM) digital voice transmission with the D1 channel bank.
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, [2] provides fiber to the home (FTTH) service in select markets. Historically a form of AT&T Fiber Internet launched in the fall ...
The Administrative Module (AM) is a dual-processor mini main frame computer of the AT&T 3B series, running UNIX-RTR. AM contains the hard drives and tape drives used to load and backup the central and peripheral processor software and translations. Disk drives were originally several 300 megabyte SMD multi-platter units in a separate frame.
On October 20, 2003, the Wachners sold BGW Systems to Amplifier Technologies, Inc. of Montebello, California.Under ATI, BGW has introduced several new amplifier designs [10] but has reduced its industry profile; BGW's last appearance at an industry trade show was at the NAMM Show in January, 2003.
The first cellular network efforts began at Bell Labs and with research conducted at Motorola.In 1960, John F. Mitchell [7] [8] [9] became Motorola's chief engineer for its mobile-communication products, and oversaw the development and marketing of the first pager to use transistors.
A residential gateway is a small consumer-grade gateway which bridges network access between connected local area network (LAN) hosts to a wide area network (WAN) (such as the Internet) via a modem, or directly connects to a WAN (as in EttH), while routing.
DirecTV Stream (formerly DirecTV Now and AT&T TV) is a premium streaming multichannel television service offered in the United States by DirecTV.. The brand offers pay television service without a contract, with the service utilizing a customer's existing streaming TV hardware, such as a Roku or Amazon Fire TV device, and is also available on some smart TV systems like Tizen OS by Samsung ...