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  2. Last-call return - Wikipedia

    en.wikipedia.org/wiki/Last-call_return

    Philippines *999 In Gibraltar and formerly in Ireland, ex-directory or unlisted numbers are withheld by default. In Germany , most contemporary telephones have a specific button functioning as call return, which is an internal function of the telephone itself (the number of the last caller is stored inside the phone at the time of that last ...

  3. Callback (telecommunications) - Wikipedia

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

    For example, if a customer from Spain is calling a phone number in Australia, and it costs 8 cents per minute to phone Spain from the US (the callback, which is an incoming call) and 20 cents per minute to phone Australia from the US (the destination call, which is an outgoing call), then the caller will pay a total of 28 US cents a minute ...

  4. Ringback number - Wikipedia

    en.wikipedia.org/wiki/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.

  5. You can now add a callback number to your lost (and locked ...

    www.aol.com/news/2014-08-08-android-device...

    One way to do that is through Android Device Manager, which now has the capability to add a callback number on the phone's lock screen that the finder can contact. You can now even write a message ...

  6. Automatic ring back - Wikipedia

    en.wikipedia.org/wiki/Automatic_ring_back

    Automatic ring back is a service offered by phone companies.. On making a telephone call to a number that is engaged, automatic ring back is a service provided by the telephone company whereby, when the called number becomes available, the caller is rung back, usually with a distinctive "ring back" ring.

  7. This is why you should never call back an unknown number - AOL

    www.aol.com/article/lifestyle/2019/05/03/this-is...

    The post This Is Why You Should Never Call Back an Unknown Number appeared first on Reader's Digest. Not everything is a scam: Show comments. Advertisement. Advertisement. Holiday Shopping Guides.

  8. Automatic callback - Wikipedia

    en.wikipedia.org/wiki/Automatic_callback

    In telecommunications, an automatic callback is a computer telephony calling feature that permits a user, when encountering a busy condition or other condition where the called individual is unavailable, to instruct the system to retain the called number and to establish the call when there is an available line or when the called number is no longer busy.

  9. Unstructured Supplementary Service Data - Wikipedia

    en.wikipedia.org/wiki/Unstructured_Supplementary...

    USSD on a Sony Ericsson mobile phone (2005). Unstructured Supplementary Service Data (USSD), sometimes referred to as "quick codes" or "feature codes", is a communications protocol used by GSM cellular telephones to communicate with the mobile network operator's computers.