Your "long version" answer is very helpful. My CGN3 has an en/disable button for SIP/ALG but it still doesn't allow my SIP phone to register. I will follow your recommendation regarding the bridge. Interestingly, my public telephone service provider ...
Actually, I thought this was the right thread to post my question. The very first post, and most of the others, relate to methods of disabling the SIP/ALG in order to use their SIP devices. I see lots of suggestions to disable the function, I'm just ...