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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. US West - Wikipedia

    en.wikipedia.org/wiki/US_West

    US West Communications was the first local telephone company to offer Caller ID service in 1991, nearly four years before any other local telco could do so. They were the first U.S. telco to upgrade their PSTN to electronic switching before 1990 and they were the first to offer residential and business ISDN and later, DSL services to their ...

  4. Automatic number identification - Wikipedia

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

    A caller's telephone number and line type are captured by ANI service even if caller ID blocking is activated. The destination telephone company switching office can relay the originating telephone number to ANI delivery services subscribers. Toll-free subscribers and large companies normally have access to ANI, either instantly via installed ...

  5. List of mobile virtual network operators in the United States

    en.wikipedia.org/wiki/List_of_mobile_virtual...

    Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the four major cellular carriers in the country—AT&T Mobility, Boost Mobile, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.

  6. 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.

  7. AOL Advantage Plans - AOL Help

    help.aol.com/products/aol-advantage

    Learn more about ID Protection by AOL, the plan designed to help protect your identity, privacy and online reputation so you can shop, bank, socialize, and surf online with greater peace of mind. MyBenefits · Mar 21, 2024

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

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

    Here Are 8 of the Best Sites for Free Reverse Phone Lookups There are a lot of sites out there that promise to do these searches for you, and it can be hard to tell which ones are legitimate.

  9. 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 ...

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