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  2. Line information database - Wikipedia

    en.wikipedia.org/wiki/Line_Information_DataBase

    In the US, caller ID name information is not transmitted from the originating office to the destination office. It is the terminating carrier that is responsible for providing the caller ID information to its customers. The carrier performs a database lookup using the caller's telephone number to obtain the name information for the caller ID ...

  3. Caller ID - Wikipedia

    en.wikipedia.org/wiki/Caller_ID

    Caller-ID system response sounds in various cases: analog, ISDN and digital PBX Caller identification (Caller ID) is a telephone service, available in analog and digital telephone systems, including voice over IP (VoIP), that transmits a caller's telephone number to the called party's telephone equipment when the call is being set up.

  4. Calling Name Presentation - Wikipedia

    en.wikipedia.org/wiki/Calling_Name_Presentation

    In Canada, the caller name information can be applied either by the client's own equipment (PBX), or by the originating carrier. The altering of caller ID information is allowed, provided it does not violate regulations in place regarding spoofing or fraud. [2] In the US, the caller's name, or CNAM information, is not sent during a call.

  5. Automatic number identification - Wikipedia

    en.wikipedia.org/.../Automatic_number_identification

    Automatic number identification (ANI) [1] [2] is a feature of a telecommunications network for automatically determining the origination telephone number on toll calls for billing purposes. Automatic number identification was originally created by the American Telephone and Telegraph Company (AT&T) for long distance service in the Bell System ...

  6. City ID - Wikipedia

    en.wikipedia.org/wiki/City_ID

    City ID logo. City ID is Cequint's first-generation caller mobile identification service. City ID displays the city and state or country associated with the caller's telephone number. In partnership with mobile network operators, the City ID service is available on many devices from Alltel, AT&T, [1] U.S. Cellular, and Verizon Wireless. [2]

  7. How to Do a Free Reverse Phone Lookup & the 8 Best ... - AOL

    www.aol.com/free-reverse-phone-lookup-8...

    There’s an easy way to find out: conduct a reverse phone lookup — for free. But is there a truly free reverse phone lookup? Yes — there are plenty of sites that offer free reverse phone lookups.