Call-progress tone
id:
call-progress-tone-170-839806
title:
Call-progress tone
text:
In telephony, call progress tones are audible tones that provide an indication of the status of a telephone call to the user. The tones are generated by a central office or a private branch exchange (PBX) to the calling party. Telecommunication equipment such as fax machines and modems are designed to recognize certain tones, such as dial tone and busy tone. The ITU-T E.180 and E.182 recommendations define the technical characteristics and intended usage of some of these tones. ToneScript is a t
brand slug:
wiki
category slug:
encyclopedia
description:
Telephony signal
original url:
https://en.wikipedia.org/wiki/Call-progress_tone
date created:
2005-07-19T15:07:49Z
date modified:
2024-08-31T17:02:50Z
main entity:
{"identifier":"Q868927","url":"https://www.wikidata.org/entity/Q868927"}
image:
fields total:
13
integrity:
15