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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]
An automatic number announcement circuit ( ANAC) is a component of a central office of a telephone company that provides a service to installation and service technicians to determine the telephone number of a telephone line. The facility has a telephone number that may be called to listen to an automatic announcement that includes the caller's ...
The n-back task is a continuous performance task that is commonly used as an assessment in psychology and cognitive neuroscience to measure a part of working memory and working memory capacity. [1] The n -back was introduced by Wayne Kirchner in 1958. [2] N-Back games are purported to be a training method to improve working memory and working ...
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.
Callback verification. Callback verification, also known as callout verification or Sender Address Verification, is a technique used by SMTP software in order to validate e-mail addresses. The most common target of verification is the sender address from the message envelope (the address specified during the SMTP dialogue as "MAIL FROM").
These four-digit numbers are dialled before the destination number to complete and bill a call by a carrier other than the subscriber's service provider. For example, to use AAPT to call a number in Tokyo, Japan, subscribers would dial 1414 0011 81 3 xxxx xxxx, or to use Optus to call a number in Perth they would dial 1456 08 xxxx xxxx. It is ...
A CAPTCHA ( / ˈkæp.tʃə / KAP-chə) is a type of challenge–response test used in computing to determine whether the user is human in order to deter bot attacks and spam. [1] The term was coined in 2003 by Luis von Ahn, Manuel Blum, Nicholas J. Hopper, and John Langford. [2]
Always use a strong password with a combination of letters, numbers and special symbols. Register for two-factor authentication if a website lets you do so. The scammer may not attempt to breach ...