Close now plays a short repeating tone on outbound calls made from its web and desktop apps while the call connects. The tone shows the call is going through, even when the carrier is slow to start ringing. Reps no longer have to wait in silence to know whether a dial has gone out.
The tone stops in three cases. It stops when the carrier's ringing or a carrier message starts, when the person answers, or when the call ends. The source does not say whether admins can turn the tone off or change it.