Which three of these are characteristics of multicast music on hold? (Choose three.)
A. It uses one-way RTP point-to-point.
B. There is a single user per audio stream.
C. Networks and devices have to support multicast.
D. It increments on IP address for different audio sources
E. It uses the multicast group address 239.1.1.1 to 239.255.255.255.
F. It uses service parameters to set the codec type(s) used by MoH services.
