Singapore Telecommunications (SingTel) plans to launch a voice-over-internet protocol (VoIP) over Wi-Fi service using dual-mode mobile phones, ahead of a planned commercial launch in 2007. SingTel will utilise more than 330 wireless hotspots on the island state to bring the new WLAN service to customers via three Nokia phones – the E60, E61 and N80 – which all support Session Initiation Protocol (SIP)-based VoIP. All three devices work on 2G, 3G and WLAN networks.
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