What is more profitable to connect ip-telephony or Skype, viber and the like to call customers to any numbers by one person?

Question

Skype

What is more profitable to connect ip-telephony or Skype, viber and the like to call customers to any numbers by one person?

Answer 1

around the world skype only, the voice quality is not comparable with telephony
in the Russian Federation, you can search for
Viber options, too, crap in voice

Answer 2

I agree. Or Skype, or some kind of telephony, there is a selection in Startpack, by the way.

Answer 3

Definitely telephony. When choosing Skype or Viber, you will have a limited list of clients tied to Internet access, offline and software availability. IP-telephony will allow you to call "grandfather's village". Moreover, now there is a very large selection of providers that offer such services. Often, the cost of calls is much cheaper than the same dialers, like Skype, Viber, etc. I myself use toptell.ru dial-up services.