Hi Dave,
I see that no one else has answered so far. I flew to HS for some vacation through the end
of the year, but am checking mail on occasion.
Judging by your problem, it looks more like a problem with your 3G network, and not with
RemoteRig. I suggest you find someone with a "normal" 3G router and try it out, maybe
with the same or a different network provider. In Germany, they rarely work with RemoteRig,
since they try to block the VoIP ports. For sure, never not use port 5060 for SIP, since this may
an issue.
73,
Mitch DJ0QN / K7DX