According to ABI Research, fixed and mobile network operators will invest more than $450 mln in capital infrastructure over the next five years to provide fixed-mobile convergence. This will ameliorate traffic migration to VoIP service providers and lead to implementation of more SIP-based services. ABI Research forecasts that worldwide, operators will generate $97 bln in service revenue from FMC applications in 2011, mainly from offering lower fixed-line call charges to mobile users.