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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. 1-800-COLLECT - Wikipedia

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

   The numerical translation for 1-800-OPERATER (1-800-673-7283) was, at the time, assigned for routing to the MCI network, which capitalized on the large number of spelling errors by connecting those calls to 1-800-COLLECT. After several months, AT&T realized they were inadvertently directing a portion of their business to MCI and terminated the ...

4. Collect call - Wikipedia

   en.wikipedia.org/wiki/Collect_call

   AT&T similarly discontinued its collect call services for the United States. [ 17 ] 1-800-COLLECT remains operational. Prior to the introduction of the toll-free 800 area code in 1967, a Zenith number (in the U.S. and Canada) or an enterprise number (in the U.S. only) would indicate to an operator that the business agreed to automatically ...

5. Toll-free telephone number - Wikipedia

   en.wikipedia.org/wiki/Toll-free_telephone_number

   800 toll-free numbers are commonly called "800 免费电话". The official name is "被叫集中付费业务" (called party collect paid service), which means the cost of the call is borne not by the caller but by the party receiving the call. 800-toll-free numbers in China are ten-digit numbers beginning with "800". There is no prefix before ...

6. AOL Mail for Verizon Customers - AOL Help

   help.aol.com/products/aol-mail-verizon

   1-800-358-4860. Get live expert help with your AOL needs—from email and passwords, technical questions, mobile email and more. AOL Mail for Verizon Customers.

7. Directory assistance - Wikipedia

   en.wikipedia.org/wiki/Directory_assistance

   In 1999, AT&T applied for permission to discontinue this service, [2] but it remained active until the summer of 2020. [citation needed] An automated disconnection recording now plays when calling the 1-800-555-1212 number. [citation needed]