Assume endpoints T1 and T2 are registered with the same SC node zone. After T1 calls the number of T2 using H.323, T1 and T2 communicate with each other. Which of the following statements are true about the call process? (Choose all that apply.)
A.
Inthis process, the H.225 RAS signalinginteraction between T1 and T2 must pass through the SC.
B.
In this process, the H.225 call signaling interaction between T1 and T2 must pass through the SC.
C.
In this process, the media stream must be directly transmitted between T1 and T2.
D.
Endpoint control signaling involved in this process mainly includes H.225 RAS, H.225 Call Signaling, and H.245.
H.225 RAS messages (registration, admission, status) always traverse the SC (gatekeeper) for endpoints in the same zone.
RTP media is exchanged directly between T1 and T2 once the call is established.
The call control sequence involves H.225 RAS (registration/admission), H.225 call signaling (SETUP/CONNECT), and H.245 control for capabilities.
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