A wide range of providers - also known as carriers - is available to you for Internet telephony. We recommend that you take a close look at the tariffs for your future calls at home and abroad when making a comparison. Do not be fooled by any cheap supplier!
Pay attention to the quality, experience, seriousness and competence of the provider. If possible, do not conclude long-term contracts! It is very difficult for you to get out of these gag contracts. If for any reason you are not satisfied with your carrier and its services, you may be forced to continue working with them.