195 Check DNS setup is right or not. Default Google DNS server is 8.8.8.8, 8.8.5.5.You can use different DNS provided by your ISP.29. I cannot use the P2P function on my cell phone or the WEB.There are following possibilities: Check the device P2P function is enabled or not. (Mainmenu->Setting->Network->P2P) Check the device is in the WAN or not. Check cell phone P2P login mode is right or not. It is the specified device P2P login port or not when you are using P2P client. Check user name or password is right or not. Check P2P SN is right or not. You can use the cell phone to scan the QR code onthe device P2P interface (Main menu->Setting->Network->P2P), or you can usethe version information of the WEB to confirm. (For some previous seriesproducts, the device SN is the main board SN, it may result in error.)30. I connect the standard definition camera to the device, there is no video output.There are following possibilities: Check the DVR supports standard definition signal or not. Only some seriesproduct supports analog standard definition signal, HDCVI signal input. Check channel type is right or not. For the product supports analog standarddefinition camera/HD camera, you need to go to the mainmenu->Setting->Camera->Channel type to select corresponding channel type(such as analog) and then restart the DVR. In this way, the DVR can recognizethe analog standard definition. Check camera power supplying, or camera data cable connection.