ringback en · NOUN
Etymology
Deverbal from ring back.
Meanings
- (uncountable) The sound transmitted back to a caller to indicate that the telephone they are calling is ringing.
-
(uncountable) A telephone feature allowing a person to receive an automatic call back when a busy line becomes free.
'But you've been engaged an awfully long time: I had to use ringback in the end and that's expensive, but this is important so never mind.'
2013, Mark Roberts, The Sixth Soul: