I just got it to work by unplugging the VoIp adapter, that seemed to be the problem of my ports not forwarding. However i still cannot get UPnP to work as i have enabled both SSDP and UPnP in windows services and also in my router. I used a UPnP checker program and it says that these services are not running. Very frustrating.....
UPNP doesn't work too well in many cases in my experience.
Also if the VOIP is the reason the VOIP also needs to support UPNP.
Although it's quite unlikely that a VOIP blocks ports.
Isn't that a router with integrated VOIP, I once had such an configuration.
Refer to the VOIP's manual or Google to set an exception in the VOIP.
Usually you access them by typing in a certain IP in your web browser.