I give up. You guys don't get it.
I have Vonage. Had it in SXM so my 85 year old mother in law could call from Boca.
She just called my Vonage number from her Boca number and it rang in SXM. I assigned a local Boca number for it.
And you can plug your Vonage phone ANYWHERE there is internet.
I still have Vonage, same number and cousin in Belize has one too.
Good luck with all your tricks and rules.
Cheers
irina