Juniper Research reports that worldwide users of mobile voice-over-IP (VoIP) will exceed 100m by 2012. >50% will reside in Europe and North America (correlation between 3G access and mobile VoIP take-up).
Mobile operators likely to lose USD5bn in revenue by 2015 because of mobile VoIP apps on Wi-Fi networks. Traffic volumes likely to be be higher in developing markets (calling patterns of migrant workers).
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