AVer NX8000 - Manual (Page 115)

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Appendix C Network Service Port
The following table shows the ports that DVR server uses for certain network service.
Port # Variable
Remote Console (CM 3000)
5550 Y
WebCam
80 Y
2-way audio
9999 Y
Remote Control (CM3000/RC1000) 5555 Y
DVR POS 5150 Y
DVR DDNS (Upload / Download) 53 / 1053 N