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PC-CCTV program checking
Web interface
You can check stream in a web browser. Open web browser (you can use any computer in the same network), enter http stream in the address line, the same stream as written in the Section "Access URLs" and see if you can see the video stream.
VLC
You can check stream with VLC. Open VLC program (if you need see forum on how to install VLC program) and enter in the "Network stream" field any stream from Section "Access URLs".
ONVIF device manager
See Forum for help.