Assume that T1 and T2 are two radio terminals registered under the same SC node area (SC does not enable signaling routing but enables media routing). After T1 calls T2's number through the H.323 protocol, T1 and T2 communicate. Which of the following descriptions of signaling and media during the above call process is wrong?

Assume that T1 and T2 are two radio terminals registered under the same SC node area (SC does not enable signaling routing but enables media routing). After T1 calls T2’s number through the H.323 protocol, T1 and T2 communicate. Which of the following descriptions of signaling and media during the above call process is wrong?

Assume that T1 and T2 are two radio terminals registered under the same SC node area (SC does not enable signaling routing but enables media routing). After T1 calls T2’s number through the H.323 protocol, T1 and T2 communicate. Which of the following descriptions of signaling and media during the above call process is wrong?
A . During the above call process, the H.245 signaling interaction between T1 and T2 does not go through the SC.
B . During the above call process, the Q931 signaling interaction between T1 and T2 does not go through the SC.
C . During the above call process, the Q931 signaling interaction between T1 and T2 passes through the SC.
D . During the above call process, the media interaction process between T1 and T2

Answer: C