Mobile data will overtake voice traffic by 2011, predicts Nokia Siemens Networks, which has just notched up its 500 millionth mobile data user.
Jürgen Walter, head of the company's converged core networks business, said the growing popularity of mobile broadband services and machine-to-machine applications would create an exponential rise in the number of bytes of data traffic carried by mobile packet core networks worldwide.
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"This will result in a yearly doubling of data traffic from almost 400 petabytes (400 million gigabytes) a year in 2009 to almost 2,000 petabytes (2 billion gigabytes) a year by 2011. This would overtake the estimated 1,200 petabytes volume of voice traffic.
Walter said its customer base of close to 300 network operators served half a billion users, which meant Nokia Siemens Networks carried about 40% of the mobile data traffic.