In the NBX Phone System there used to be the ability to use what is called Whisperpage. This allowed a user to "Whisper" a message to his/her supervisor while this person was on the phone, but the other party could not hear the whispered message. I have not been able to find an equivalent of this on the VCX 200 PBX. I was told that Barge-In does this, but it does not, as both parties on the call hear the person barging in. Does anyone know how this can be configured on a VCX 200?