Which of the following statements are true regarding Conference capability on Cisco CME 3.0 and below?

A.
g.711 Conference requires DSP Farm from the router.

B.
g.711 Conference requires extra DSPs from the FXS ports.

C.
g.729 Conference media mixing requires DSP on the Cisco CME router.

D.
g.711
Conference Media mixing is within IOS, thus no additional DSP is required from the Cisco CME router.