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Bell System tones. In North America (excluding Mexico, Central America and parts of the Caribbean ), the standard audible ringing tone is a repeated cadence of a two-second tone and four seconds of silence. In Korea, repeated cadence of a one-second tone and two seconds of silence. The signal is composed of the frequencies 440 Hz and 480 Hz.
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 ...
Tons of Sobs. Tons of Sobs is the debut studio album by the English rock band Free, released in the UK on 14 March 1969. [2] While the album failed to chart in the UK, it reached number 197 in the US. [4] Free are cited as one of the definitive bands of the British blues boom of the late 1960s, even though this is the only album of their canon ...
Interactive voice response. Interactive voice response ( IVR) is a technology that allows telephone users to interact with a computer-operated telephone system through the use of voice and DTMF tones input with a keypad. In telephony, IVR allows customers to interact with a company's host system via a telephone keypad or by speech recognition ...
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. One variation of this technology was developed by IDT Corporation in 1991. [1] IDT Corp used a hardware solution that was never widely accepted and ultimately failed and was ...
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. When the phone is picked up, it calls ...
Fast, secure and reliable email. Stay in touch and enjoy the ride with AOL Mail. supported web browser. Get user-friendly email with AOL Mail. Sign up now for world-class spam protection, easy ...
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