Looking for a telephony service (with CRM integration) that offers unlimited outbound calls internationally with a fixed monthly fee.

Looking for a telephony service (with CRM integration) that offers unlimited outbound calls internationally with a fixed monthly fee.

I did some research and found two different companies, Aircall and Ringover that offer what I was asking. The problem is that Aircall is a bit too expensive for us right now and for Ringover, although it has good pricing plans, it doesn't allow outbound calls to Russian mobile phone numbers (only landline).

So any recommendations?