1, CTEI is the code of China Telecom's non-cellular Sail intelligent terminal products (such as routers, smart cameras, smart speakers, etc.). ). The code is formulated according to the rules of International Mobile Equipment Identification Number (IMEI), and the overall digit is 15, which is marked to the product "piece" level for manufacturers to enter, and colleagues are suitable for sales and smart home management platform supervision.

2. The monitoring string code is controlled by PTZ. If the camera has PTZ, it can be distinguished by setting the serial number, so that the video recorder can control the PTZ of all cameras.