JOHANNESBURG (WiMAX Day). According to Jan Mrosik, the Head of Nokia Siemens Networks in South Africa, the number of ‘connected people’ in the world will double to 5 billion, and global voice and data traffic worldwide will increase 100 fold by 2015. The main source of growth will be from data usage, and after 2010 services such as video will demand greater bandwidth from networks. MyADSL reported that Mrosik said he “expects most of the traffic to be Internet-based despite the fact that a large percentage of people will be ‘connected’ via mobile devices.”