Seems like TeliaSonera has some ambitious plans.
According to Finnish source, their CEO has stated that "data takes 80% of the capacity in the TeliaSonera networks, but 80% of their revenues comes from voice services."
And hence TeliaSonera targets being the first operator to charge for all VoIP calls.
They will offer their customers a fixed plan which includes VoIP calling, this to be launched in Spain first.
The Spanish offering sounds like VoLTE calling and terminated internationally. This is not unheard of, just look at what MetroPCS has been doing in the USA.
Gotta wish them luck if TeliaSonera wants to stop OTT providers.
It comes to the question of will QoS and bit differentation be enough.
And how about services like integrating voice to web sites? We are unlikely to talk of MSISDN numbers then...
