Is there a way for a incoming call transfer to be recalled after it hits the extensions voice mail greeting? I can recall it while it's still ringing the extension by hitting the recall button and then the flashing answer button. However, once it hits the voice mail greeting, I can no longer recall it back to me. I would like to be able to pull that caller back to me so I can inform them that the person they were trying to reach isn't available. Is this possible or do they just need to leave a voice mail at that extension? Thanks!