Which of the following statements are true regarding H.450 implementation in Cisco CME 3.0? (Choose all that apply)

A.
IP phones require app-h450-transfer tel. Script to support H450.

B.
IP phones do not require app-h450 trnasfer tel.. script to support H450.

C.
Analog phones connected to FXS ports require app-H450 transfer tel script to support H450.

D.
Analog phones connected to FXS ports do not require app-H450 trnasfer tel script to support H450.