Which of the following is not true about VoIP?

Which of the following is not true about VoIP? The transport of digital information is in packet form, not over a dedicated channel.The sending device saves up the constant rate bit stream for a short interval, and then places those bits as the data payload in a packet.The receiver extracts packet payloads and stitches them together, recreating the bit stream and turning it into sound.None of the above