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2. Callback (telecommunications) - Wikipedia

   en.wikipedia.org/wiki/Callback_(telecommunications)

   In telecommunications, a callback or call-back occurs when the originator of a call is immediately called back in a second call as a response. International calling [ edit ] A callback, in this sense is a method of making low-cost international calls via a third country, usually the United States , where call charges are considerably lower.

3. Ringback number - Wikipedia

   en.wikipedia.org/wiki/Ringback_number

   Ringback number. A ringback number is a telephone number for a telephone line that automatically calls the line that the call was placed from, after the caller has hung up. The typical use of this facility is by telephone company technicians for testing a new installation or for trouble-shooting. [1]

4. List of telephony terminology - Wikipedia

   en.wikipedia.org/wiki/List_of_telephony_terminology

   Call waiting - a system that notifies a caller of another incoming telephone call by sounding a sound in the earpiece. Called party - (or callee or B-party) Caller. Calling party. Conference call (multi-party call) COCOT.

5. Add, replace or remove AOL account recovery info - AOL Help

   help.aol.com/articles/add-or-update-aol-account...

   Call paid premium support at 1-800-358-4860 to get live expert help from AOL Customer Care. Find out how to add or delete a recovery mobile phone number or alternate email address from your AOL account.

6. Last-call return - Wikipedia

   en.wikipedia.org/wiki/Last-call_return

   Call again, a form of automatic ring back, allows a caller, on reaching a busy signal, to hang up, dial a special code, and be called back automatically when the called number is no longer busy, usually with a limit of 30 minutes. Call return allows a customer to dial a code that identifies the last incoming call. On some types of central ...

7. T-Mobile US - Wikipedia

   en.wikipedia.org/wiki/T-Mobile_US

   T-Mobile US. T-Mobile US, Inc., often shortened as T-Mobile, is an American wireless network operator headquartered in Bellevue, Washington, U.S. [6] Its largest shareholder is multinational telecommunications company Deutsche Telekom AG, a German company headquartered in Bonn, Germany.

8. Caller ID spoofing - Wikipedia

   en.wikipedia.org/wiki/Caller_ID_spoofing

   Caller ID spoofing. Caller ID spoofing is a spoofing attack which causes the telephone network's Caller ID to indicate to the receiver of a call that the originator of the call is a station other than the true originating station. This can lead to a display showing a phone number different from that of the telephone from which the call was placed.

9. Merger of Sprint Corporation and T-Mobile US - Wikipedia

   en.wikipedia.org/wiki/Merger_of_Sprint...

   T-Mobile stated that 2024 date was a proxy for a period ending 6 years after the merger closed, but the deal's regulatory process began in 2018 and didn't actually close until 2020, so T-Mobile wants it pushed back 2 years. Secondly, T-Mobile also says that the 300 Mbit/s/2024 condition is “out of sync” with the other requirements.