Ringing/Ringback tones in time: Denmark/Greenland (1961-2025)
Автор: Tons Of TONZ
Загружено: 2025-03-14
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TONZ IN TIME: RINGING/RINGBACK (DENMARK/GREENLAND, 1961-2025)
RINGING / RINGBACK TONE: A tone advising the caller that a connection has been made and that a calling signal is being applied to a telephone number or service point (from ITU-T Recommendation E.182, Annex A).
The evolution of the ringback tone in Denmark according to official CCITT/ITU documents spanning from 1961 to 2010.
Timeline breakdown:
0:00 - 1961-1973
0:34 - 1977-1989
1:08 - 1994-2025
1:40 - 1994-2010
All the tones are normalized to -6 dB.
References:
CCITT Red Book Vol. VI (1961)
CCITT Green Book Vol. VI-4 (1973)
CCITT Orange Book Vol II, Fascicle II.2 (1977)
CCITT Blue Book Vol II, Fascicle II.2 (1989)
ITU-T Recommendation E.180, Supplement 2 (1994)
ITU-T Recommendation E.180 (2010).
#denmark #greenland #ringing #ringback #phonesounds #history #phonetone #phonecall #soundeffects #sfx #tech #technology
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