I'm using a sip provider with much better international call rates than this, however I understand that free calls in the US is really good. I don't have contac

I'm using a sip provider with much better international call rates than this, however I understand that free calls in the US is really good. I don't have contacts in the US though. I'm using voipstunt.com now with qutecom (after I really fed up with Skype) but there are many similar providers. I'm making phone calls 0.01 EUR/min + VAT to mobile in Hungary (where I live) which is not free but still much better than other providers here. Also I could bind my phone number so others can see my number when they receive my calls so they can call me back. I don't know if hangouts handles that.