Google Voice + SIP2SIP + Ikall = Free international Calls to known contacts
Background
Second post in succession on the topic but believe me when I get a new gadget I try getting all information and then once I have had the stuff working I have to make a post right away or I will forget and hence this post. This post also overrides the previous posts. Right then, let's get down to business.
Objective
We aim to make free international calls and there is nothing illegal in this set-up, not to my knowledge.
How?
Google has introduced Google Voice and allows free calls to all US numbers. This can be done using their google talk plugin in the gmail browser.