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  2. Call detail record - Wikipedia

    en.wikipedia.org/wiki/Call_detail_record

    A call detail record contains data fields that describe a specific instance of a telecommunication transaction, but does not include the content of that transaction. By way of simplistic example, a call detail record describing a particular phone call might include the phone numbers of both the calling and receiving parties, the start time, and duration of that call.

  3. File:Donald Trump and Volodymyr Zelensky telephone ...

    en.wikipedia.org/wiki/File:Donald_Trump_and...

    English: A White House memorandum of a telephone conversation between U.S. President Donald Trump and Ukraine President Volodymyr Zelensky that took place on July 25, 2019. The memo was declassified by President Trump in response to allegations that he had pressured Zelensky to investigate Joe Biden, a candidate running against him in the 2020 ...

  4. 911 (emergency telephone number) - Wikipedia

    en.wikipedia.org/wiki/911_(emergency_telephone...

    The first use of a national emergency telephone number began in the United Kingdom in 1937 using the number 999, which continues to this day. [6] In the United States, the first 911 service was established by the Alabama Telephone Company and the first call was made in Haleyville, Alabama, in 1968 by Alabama Speaker of the House Rankin Fite and answered by U.S. Representative Tom Bevill.

  5. Call centre - Wikipedia

    en.wikipedia.org/wiki/Call_centre

    The term "call center" was first published and recognised by the Oxford English Dictionary in 1983. The 1980s saw the development of toll-free telephone numbers to increase the efficiency of agents and overall call volume. Call centers increased with the deregulation of long-distance calling and growth in information-dependent industries. [11]

  6. Telephone call - Wikipedia

    en.wikipedia.org/wiki/Telephone_call

    The call may use land line, mobile phone, satellite phone or any combination thereof. When a telephone call has more than one called party it is referred to as a conference call. When two or more users of the network are sharing the same physical line, it is called a party line or Rural phone line. U.S. President Gerald Ford on the phone

  7. List of call centre companies - Wikipedia

    en.wikipedia.org/wiki/List_of_call_centre_companies

    Company Founded Employees Revenue Locations Atento: 1999 154,000 Concentrix: 1983 290,000+ US$5.3 billion (2020) Conduent: 2017 31,000 (2021) US$4.140 billion (2021) 22 countries (2021)

  8. Closed-loop communication - Wikipedia

    en.wikipedia.org/wiki/Closed-loop_communication

    Out (conversation is done) Command Pallet. Using these phrases ensures that not only was the message transmitted but also that it was understood. They are a good example of “closing the loop” when communicating because it leaves minimal room for miscommunication to occur. [3] Closed-Loop Communication in Aviation

  9. Next Generation 911 - Wikipedia

    en.wikipedia.org/wiki/Next_generation_911

    The stated goal of a related USDOT project is: "To enable the general public to make a 911 “call” (any real-time communication – voice, text, or video) from any wired, wireless, or IP-based device, and allow the emergency services community to take advantage of advanced call delivery and other functions through new internetworking ...