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  2. Bell System Practices - Wikipedia

    en.wikipedia.org/wiki/Bell_System_Practices

    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]

  3. T-carrier - Wikipedia

    en.wikipedia.org/wiki/T-carrier

    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.

  4. AT&T Computer Systems - Wikipedia

    en.wikipedia.org/wiki/AT&T_Computer_Systems

    AT&T Computer Systems (abbreviated AT&T-CS) was the home of the UNIX System V operating system, originally developed in the Bell Labs Research Division. The important System V Interface Definition (SVID) was written, attempting to standardize the various flavors of Unix , and define the official interfaces which made up a Unix operating system.

  5. ATT&CK - Wikipedia

    en.wikipedia.org/wiki/ATT&CK

    The framework consists of 14 tactics categories consisting of "technical objectives" of an adversary. [2] Examples include privilege escalation and command and control. [3] These categories are then broken down further into specific techniques and sub-techniques. [3] The framework is an alternative to the cyber kill chain developed by Lockheed ...

  6. AT&T Information Systems - Wikipedia

    en.wikipedia.org/wiki/AT&T_Information_Systems

    AT&T Information Systems (ATTIS), originally known as American Bell, was the fully separate subsidiary of American Telephone & Telegraph Company (AT&T) which focused on computer technology ventures and telephone sales, and other unregulated business. It was one of the three core units of AT&T formed after the breakup of the Bell System.

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  8. Carrier IQ - Wikipedia

    en.wikipedia.org/wiki/Carrier_IQ

    Carrier IQ was a privately owned mobile software company founded in 2005 in Sunnyvale, California.It provided diagnostic analysis of smartphones to the wireless industry via the installation of software on the user's phone, typically in a manner that cannot be removed without rooting the phone.

  9. AT&T Communications - Wikipedia

    en.wikipedia.org/wiki/AT&T_Communications

    AT&T Phone (formerly AT&T U-verse Voice) is a voice communication service delivered over AT&T's IP network . This phone service is digital and provides a voicemail service accessed by *98 from the home number. Customers who subscribe to both AT&T Phone and U-verse TV get features such as call history on channel 9900, which displays the last 100 ...