Well OK, astonished then! I think there has to be some dramatic oversimplification in the description though. Telecom signaling is still a network level event,

Well OK, astonished then! I think there has to be some dramatic oversimplification in the description though. Telecom signaling is still a network level event, even in mobile networks. The receiving network does not typically provide audio to the caller until the call is complete. But hey, what a terrible idea! I'm glad to have been old enough in that period (2004-2008) that no one I knew would foist such a thing on a caller.