I have configured my SIP account and will receive incoming calls, but I can only make selected outgoing calls. There is no rationale as to why one number will work and another won't. It seems to call a 1-289#, but not a 1-416# which are both in the same city, and will also call a 1-649# which is an international call. The outgoing calls that do not go through seem to show a little red lock beside the bars for service if that means anything?
I also don't seem to have any audio on incoming or outgoing calls (that go through) - I'm not sure if that is a separate or related issue. I reviewed the settings with my VOIP provider and they seemed ok to them. I also was not able to dial the 4443# to test the audio (same issue as above).