Disconnect tone
 | This article needs additional citations for verification. (February 2024) |
A disconnect tone in telephony is a tone provided to the remaining party to a call after the remote party hangs up.busy, or the off-hook tone (e.g. in US), or between five and fifteen seconds of the Number Unobtainable tone (e.g. in UK).
On some telephone exchanges in the UK, the following audio message is looped for fifteen seconds, interspersed with
special information tones (SIT), to advise the remote party has hung up: "(SIT) The other person has hung up". On iPhones, the tone is 3 bursts of 425 Hz tones each lasting 0.2 seconds.[citation needed
]
See also
- Forward disconnect
References
- ISBN 978-0-7506-9944-0.
- ^ Telecommunications: Glossary of Telecommunications Terms. Government Institutes, 1997. D-23.
