Control layer
Schedules the signaling of video surveillance services, such as device registration and alarm access, and connects to third-party devices and platforms.
PCG
Complies with the GB/T 28181 protocol to connect to third-party video surveillance platforms.
SCU
Controls device services, including alarm processing, PU control, and SMU signaling forwarding.
DCG
Connects to PUs using the ONVIF1.02, ONVIF2.0, or ONVIF Profile S protocol.