I am having problmes with VOIP and NAT. I was able to get the sjphone to work by adding STUN server in the config but do not see same option for the buil in VOIP config app. I'd like to use build in if possible so I do not hav eto retype all of my contcats. Is it possible to add a STUN server?
I got vipstunt to work, but only worked out of the outside speaker. I ended up not using it and just used the access number. That way I still get free calls to Ireland, just uses minutes.