In order you use iCam with the WVC80N, you'll need to run iCamSource on a computer that can access the camera. You can get iCamSource here:
http://skjm.com.icam/support.phpiCamSource will most likely be running on a computer that is on the same local network as the WVC80N, so you don't need to open any ports for iCamSource to connect to the camera.
When you run iCamSource, you'll need to select the "Ethernet / Wi-Fi" tab because your camera is a network camera, not a USB camera. Then, enter the MJPEG or JPEG URL for your camera.
If the MJPEG or JPEG URL isn't something that can be found by searching around with Google or by contacting their support, we actually have another solution available, although it is currently in its very preliminary stages, and that is:
http://skjm.com/icam/mjpeg_test.phpWhen you enter the camera's IP address and port into that web page, it will attempt to connect to the camera using all of the common MJPEG and JPEG URLs that we are aware of. If any of the URLs produce an image, then that is the URL to use in iCamSource.
If your camera requires a login and password, you can enter them in that webpage right before the address : login:password@Camera_address
Once iCamSource is running and displaying video from your camera, you can try connecting from iCam on the iPhone. In most cases, it will connect without needing to do any port forwarding, but there are exceptions where the firewall piercing logic in iCam doesn't work. If you see the Source Connection Error when attempting to connect from 3G, but not from the local Wi-Fi network, that may indicate that you need to use port forwarding.
There's more information about using port forwarding with iCamSource here:
http://skjm.com/forum/index.php?topic=402.0