There are many cheap VoIP services that give you access to entire world. I am interested to know (coming from the telecom field) how you can monetize calls without actual call center staff hard/soft/warm/cold selling?
There is so much automation out there now (Robocallers, Voice Recognition apps, etc.) that I cannot imagine a new approach to monetizing calls without a human at the other end of the line dealing with the prospect. Also, keep in mind that every country will have different rules/laws as to how you can contact or deal with their citizens by phone, which will make additional automation or approaches even more difficult.
@jazzyjmnote Unlimited is a funny word in this sense. Calls to most of the USA are very very cheap, unless its 'offnet' traffic. I can help you with any termination you need, not as a salesman but as an interested partner IF you have a good concept?
I think you cannot monetize a call as you're already paying your service provider. One option that is still possible is using a 900 number. But this is rarely used today. !!