HIKVISION DS-7604NI-SE/P Quick Start Manual page 9

SETTING UP NETWORK ACCESS
The "MORE SETTINGS" tab contains the ports that need to be forwarded for remote access
.
The SERVER PORT is responsible for the MOBILE APP and CLIENT SOFTWARE log-in.
The HTTP PORT is responsible for WEB BROWSER log-in.
The RTSP PORT is responsible for VIDEO/AUDIO STREAMING.
Units with older firmware have the RTSP PORT set to 554. A lot of cell phone carriers block incoming
data through port 554, which is why Hikvision recommends changing that port to 10554
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