ringback
nounEtymology Deverbal from ring back.
1
Communications, Electrical engineering, Engineering, Natural sciences, Physical sciences, Telecommunications The sound transmitted back to a caller to indicate that the telephone they are calling is ringing.
2
Communications, Electrical engineering, Engineering, Natural sciences, Physical sciences, Telecommunications 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: