Regarding MCU cascading, what is wrong in the following description ()

The terminal number or name needs to be protected in the SMC2.0 system to avoid accidental modification.
The most appropriate method is () (single choice)

The customer purchased two SCs, namely SC1 and SC2. Even if SC1 is configured with 1 service IP and SC2 is configured with 2 service IPs, it will not affect the configuration of SC1 and SC2. () Right or Wrong

Which of the following signaling is included in a SIP call? () (multiple choice)

In the H.460 public and private network traversal single SC network, the H.245 TCP connection of the private network terminal is established with the TS (traversal server). () Correct or Wrong