I just followed the guide for my phone and it just worked
Where is on your router page does it says that its NAt type is "Port Restricted Cone NAT STUN.", I can not see that on my router?
You could try the Voipfone Free Trials (including Voipfone Unlimited) include 15 minutes of calls to UK landlines or mobiles, to enable you to try out the included services. To make more calls, you can either top up your account with calling credit, or upgrade your trial to its paid-for equivalent. Just to confirm that it will work or it and get some free support.
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