TRENDnet TV-IP252P - SecurView PoE Dome Internet Camera Network User Manual page 40

NOTE
 UPnP: The camera supports UPnP (Universal Plug and
Play), which is a set of computer network protocols that
enable the device-to-device interoperability. In addition, it
supports port auto mapping function so that you can
access the camera if it is behind an NAT router or firewall.
Select the Enable option to enable this feature.
 Ports Number
- HTTP Port: The default HTTP port is 80.
- RTSP Port: Configure the transmission of streaming
data within the network. The default RTSP (Real
Time Streaming Protocol) port is 554.
NOTE
Network >> IP Filter

You have to sign up for DDNS service with the
service provider before configuring this feature.
If the camera is behind a NAT router or firewall, the
suggested ports to be used are from 1024 to 65535.
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