Why is this the first and most important criteria for choosing the best IP-telephony provider? And who needs a cheap connection if you can't hear your interlocutor? What kind of opinion about you as a company will your clients or partners have? In order to achieve high quality of connection we provide an extensive system of servers, so that our users are physically located as close to them as possible. Also, in many countries we sign contracts with direct telecom providers to avoid a long call routing chain. KataTelecom clients also include some major IP-telephony providers. Skype and Viber, with their base of hundreds of millions of customers, allow themselves to use not only premium routes, but also cheaper «mediocre» communication providers.