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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. 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.

5. 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 ...

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. 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]

8. AOL Plans - AOL Help

   help.aol.com/articles/aol-advantage-plans

   Get live expert help for all your AOL needs - from email to installation, logging in, technical questions, mobile email, and more. Plus, you’ll get essential online security products. This plan includes: 24x7 Live Support, McAfee® Multi Access and LastPass Premium. Get started now!

9. AOL Live Support Plus

   help.aol.com/articles/live-support-plus-faqs

   AOL Live Support Plus includes our top-of-the-line support and security products that will help protect your identity and information online. Get started today! Support when you need it: 24x7 Live Support gives you access to AOL experts over the phone or online chat, 24 hours a day, 7 days a week. Our experts are ready to assist you with any of ...