Rise of the Apps: How OTT Traffic is Balancing a Carrier Slump: "TeleGeography has fairly reliable estimates of Skype’s traffic through 2013, when the company carried 214 billion minutes of on-net (Skype-to-Skype) international traffic. Telcos terminated 547 billion minutes of international traffic in 2013, and Skype plus carrier traffic totaled 761 billion minutes.
If we assume that total (carrier plus OTT) demand for international communications has continued to grow at a relatively modest 13% annually since 2013, the combined volume of carrier and OTT international traffic would have expanded to 971 billion minutes in 2015, and to just under 1.1 trillion minutes in 2016.
As traditional carrier traffic has slumped, OTT traffic has risen to fill the void." 'via Blog this'