- Fixed Mobile Convergence (FMC) allows seamless switching of voice calls between fixed and mobile networks using a single device. When a WiFi signal is available, calls switch to the fixed network like broadband; otherwise the mobile network is used.
- FMC provides both fixed and mobile calling services with one phone that can switch between networks automatically. It requires a WiFi-enabled dual-mode handset supported by an FMC client and server.
- Examples include allowing calls on a Vodafone handset to use BT's broadband network via WiFi when at home, and generic access network (GAN) standards for roaming between wireless local and wide area networks.