Jisho

×
Wikipedia definition
1. Ringback toneA ringback tone (or ringing tone) is an audible indication that is heard on the telephone line by the caller while the phone they are calling is being rung. It is normally a repeated tone, designed to assure the calling party that the called party's line is ringing, although the ring-back tone may be out of sync with the ringing signal. The ringback tone (or "RBT") is in most cases generated in the distant switch and transmitted in-band. A message is also sent over the signaling system.
Read “Ringback tone” on English Wikipedia
Read “メロディコール” on Japanese Wikipedia
Read “Ringback tone” on DBpedia

Discussions

to talk about this word.