The ministry of public security has issued a related document to deploy and implement GB/T 28181 which is dictate to realize the building of surveillance camera system which is based on the GB/T28181 before 2015. Under the demand of the special network for the ministry of public security, We raised an design of the central signaling control server in surveillance and control system, which will offer the registration, the selection of routers and the logical control function for the client under the SIP, devices, media adapters and gateway, and so is the communication between the interface and application servers.