@ArjanH Have you tried DMZ? Suggest you can open DMA for testing.

@LiquidSnake If you have tested a different network cable, rule out to port negotiation problem. You can try resetting the switch to try it out, still not working, suspect a hardware failure and...

@GeeMoney You need to set the port forwarding on the gateway, check this: How to set up Port Forwarding feature

@kundai-1. You can reset the OC200 and don't suggest you set a static IP for OC200.

@BramNH Each region has different laws and regulations, so I guess it is restricted.

@greggentoo I'm afraid it can't, there's no corresponding wireless driver for it.