In January 2009, when Cisco released its first Visual Networking Index, a forecast of data traffic in mobile networks, the first reaction from the market was incredulity.
Cisco was projecting that, based on traffic observed over the last five years, mobile data traffic was to double every year. Even more remarkable, video, then a mere 20 per cent of the overall traffic would rise and account up to 64 per cent of the traffic by 2013.
