| 摘要 |
A video security system according to the present invention comprises: a control device; a door lock which communicates with the control device in a wired or a wireless manner; a camera; a server to communicate with the camera; a terminal to communicate with the camera via the server; a first router connected to the internet; a mobile communications modem connected to the first router in a wired manner, and connected to the internet via the first router and a mobile communication network at the same time; and a second router which is connected to the camera in a wired or a wireless manner, and connected to the mobile communication modem in a wired manner, wherein the camera communicates with the mobile communication modem via the second router. The mobile communication modem connects to the internet via the first router if a connection to the internet via the first router is normal, and connects to the internet via the mobile communications network if the connection to the internet via the first router is abnormal. |
