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  2. Call detail record - Wikipedia

    en.wikipedia.org/wiki/Call_detail_record

    A call detail record ( CDR) is a data record produced by a telephone exchange or other telecommunications equipment that documents the details of a telephone call or other telecommunications transactions (e.g., text message) that passes through that facility or device. The record contains various attributes of the call, such as time, duration ...

  3. Phone log - Wikipedia

    en.wikipedia.org/wiki/Phone_log

    Phone log. A phone log is metadata collected from telephone or mobile phones for the purpose of surveillance or espionage. This metadata may include: length of calls, phone numbers of both parties, phone-specific identification information, GPS location, call proximity, and/or computer converted voice-to-text transcripts of the phone call ...

  4. Call logging - Wikipedia

    en.wikipedia.org/wiki/Call_logging

    The call logging trial proved successful and while it was initially designed to gather phone call data and cost of billing details specific to the customers' call's, a hidden benefit emerged such that local management were also able to see a pattern of the types of calls being generated, i.e. calls to and from certain businesses in addition to ...

  5. History of the telephone in the United States - Wikipedia

    en.wikipedia.org/wiki/History_of_the_telephone...

    The telephone played a major communications role in American history from the 1876 publication of its first patent by Alexander Graham Bell onward. In the 20th century, the American Telephone and Telegraph Company (AT&T) dominated the telecommunication market as the at times largest company in the world, until it was broken up and replaced by a system of competitors.

  6. List of telephony terminology - Wikipedia

    en.wikipedia.org/wiki/List_of_telephony_terminology

    ACD - Automatic Call Distribution; Articulation score; B. Blue box - a device that was used to bypass the normal long-distance call switching tones typically used to obtain free calls. C. Call originator - (or calling party, caller or A-party) a person or device that initiates a telephone call by dialling a telephone number.

  7. Telephone call - Wikipedia

    en.wikipedia.org/wiki/Telephone_call

    A telephone call or telephone conversation (or telcon [1] [a] ), also known as a phone call or voice call (or simply a call ), is a connection over a telephone network between the called party and the calling party. Telephone calls started in the late 19th century. As technology has improved, a majority of telephone calls are made over a ...

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