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2. Wide Area Telephone Service - Wikipedia

   en.wikipedia.org/wiki/Wide_Area_Telephone_Service

   With "inward WATS", introduced for interstate calls by the American Telephone and Telegraph Company (AT&T) in 1967, subscribers were issued a toll-free telephone number in a designated toll-free area code. Unlike a standard collect call or a call to a Zenith number, 1‑800 normally may be dialed directly with no live operator. Callers within a ...

3. 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.

4. Somos, Inc. - Wikipedia

   en.wikipedia.org/wiki/Somos,_Inc.

   Toll-free telephone service is a telecommunication service in which subscribers are assigned telephone number in NPAs 800, 888, 877, 866, 855, 844, and 833. Calls to these numbers incur no toll charges for callers. The American Telephone & Telegraph Company (AT&T) first introduced 800 toll-free service in 1967. [2]

5. Long-distance calling - Wikipedia

   en.wikipedia.org/wiki/Long-distance_calling

   By the 1980s, computerisation of the system allowed British Telecom "Linkline" 0800 freephone numbers and AT&T +1-800- toll-free numbers to be controlled by a database and terminated virtually anywhere with each inbound call itemised and billed individually. This smart network was further refined to provide toll-free number portability in the ...

6. North American Numbering Plan - Wikipedia

   en.wikipedia.org/wiki/North_American_Numbering_Plan

   Some businesses still display a 2L-5N number in advertisements, e.g., the Belvedere Construction Company in Detroit, Michigan not only still uses the 2L-5N format for its number (TYler 8-7100), it uses the format for the toll-free number (1-800-TY8-7100).

7. 30 Scam Phone Numbers To Block and Area Codes To Avoid - AOL

   www.aol.com/19-dangerous-scam-phone-numbers...

   888 numbers indicate it is a toll-free call. Calls made to toll-free numbers are paid for by the recipient rather than the caller, making them particularly popular among call centers and other ...

8. Toll-free telephone number - Wikipedia

   en.wikipedia.org/wiki/Toll-free_telephone_number

   A toll-free telephone number or freephone number is one number that is billed for all arriving calls. ... An automated toll-free service was introduced by AT&T in ...

9. RespOrg - Wikipedia

   en.wikipedia.org/wiki/RespOrg

   Every toll-free telephone number is managed individually by a RespOrg. There are approximately 350 RespOrg services, [citation needed] ranging in size from large incumbent local exchange carriers (ILECs) to small companies that control only a few numbers.