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  2. Toll-free telephone numbers in the North American Numbering ...

    en.wikipedia.org/wiki/Toll-free_telephone...

    In the early 1980s, Bell Labs received a patent for what became AT&T's "Advanced 800 Service", a computer-controlled system where any toll-free number could point to any destination number, such as to a small business local number instead of a special InWATS line, and an itemized bill generated only for the calls the business actually received.

  3. Automatic number identification - Wikipedia

    en.wikipedia.org/wiki/Automatic_number...

    Modern toll-free telephone numbers, which generate itemized billing of all calls received instead of relying on the special fixed-rate trunks of the Bell System's original Inward WATS service, depend on ANI to track inbound calls to numbers in special area codes such as +1-800, 888, 877, 866, 855, 844, and 833 with 822 reserved for future toll free use (United States and Canada), 1800 ...

  4. 1-800-COLLECT - Wikipedia

    en.wikipedia.org/wiki/1-800-COLLECT

    MCI moved aggressively to insert itself into the market by launching 1-800-COLLECT that year. By dialing 1-800-COLLECT, customers could connect with an automated MCI system which would directly place a call to a designated receiving party for a fraction of the cost of the AT&T service for its operator-assisted collect calling.

  5. 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.

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

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

    Spy Dialer is a free reverse phone lookup service that accesses public databases of registered phone numbers to help users find information on cell phone and landline numbers and emails.

  7. 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 ...

  8. 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]

  9. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

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