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2. Automatic number announcement circuit - Wikipedia

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

   By connecting a test telephone set, a technician calls the local telephone number of the automatic number announcement service. This call is connected to equipment at the central office that uses automatic equipment to announce the telephone number of the line calling in. The main purpose of this system is to allow telephone company technicians ...

3. Call blocking - Wikipedia

   en.wikipedia.org/wiki/Call_blocking

   Call blocking, also known as call block, call screening, or call rejection, allows a telephone subscriber to block incoming calls from specific telephone numbers. This feature may require an additional payment to the subscriber's telephone company or a third-party. Call blocking is desired by individuals who wish to block unwanted phone calls.

4. *82 - Wikipedia

   en.wikipedia.org/wiki/*82

   If Caller ID is subscribed to or enabled on the line receiving the call, the unblocked phone number and registered name is displayed – unable to determine that the caller subscribes to outgoing callerID blocking or that *82 has been dialed to temporarily override that subscription. *82 can be dialed from U.S. land-line house phones and ...

5. Intercept message - Wikipedia

   en.wikipedia.org/wiki/Intercept_message

   A message may also be played when 0 or 1 followed by an area code is prepended unnecessarily on landline phone calls to local destinations. As of 2021, area code dialing is required in multi area code areas even for local calls, making the "not necessary to dial a 1 or 0" message no longer relevant for some areas.

6. Anonymous call rejection - Wikipedia

   en.wikipedia.org/wiki/Anonymous_call_rejection

   In many voice telephone networks, anonymous call rejection (ACR) is a calling feature implemented in software on the network that automatically screens out calls from callers who have blocked their caller ID information. The caller usually hears a voice message explaining that their call cannot be connected unless they display their number.

7. Teleblock - Wikipedia

   en.wikipedia.org/wiki/Teleblock

   The patent describes a call blocking system as: The integration of various federally required and state mandated do-not-call lists for telemarketers into a system that automatically blocks outgoing calls from a number of companies ("Customer Companies") taking into account factors such as preexisting customers which may legally be contacted is ...

8. Talk:Automatic number announcement circuit - Wikipedia

   en.wikipedia.org/wiki/Talk:Automatic_number...

   This is a joke. Furthermore, these are usually provider-specific (so a wireless provider or a CLEC might use different numbers, or not support this at all) with no provider specified. If the number was for the incumbent landline carrier only, say so, if it was reassigned years ago, remove it.

9. Automatic number identification - Wikipedia

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

   Automatic number identification (ANI) [1] [2] is a feature of a telecommunications network for automatically determining the origination telephone number on toll calls for billing purposes. Automatic number identification was originally created by the American Telephone and Telegraph Company (AT&T) for long distance service in the Bell System ...