Call Whisper

Call Whisper, otherwise known as call screening, is a calling feature that often appears on non-geographic telephony systems and hosted inbound call handling software. It involves the playing of a message to the called party when they have answered a call, during which time the calling party continues to hear ringing. The called party can then decide whether to accept the call (usually by pressing a particular key whereupon the call will be put through to them) or to reject it (either by pressing a key or simply hanging up). They can also identify the caller by their Caller ID number or answer the phone in an appropriate manner for the number that has been dialled.