I suggest you look into MagicJack, Its a little match box size device that you attach to your router and plug in a landline phone. When you make a call it originates from the US servers. Since I have a North Carolina number the call is from North Carolina to any US or Canada number.
I am retired now and still have my MagicJack, but when I traveled to Latin America I would take my MagicJack with me and when we went out to dinner I would call home and then pass my laptop around so we could all call home. We did this almost every night.
This device is dirt cheap, and here at home I used it for my FAX machine and it is hooked up to my home alarm system. Been using it for more than 10 years with zero problems.
Look into it.....