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mVoIP, as a term, captures all mobile voice sent over a data network, often the public Internet. The introduction of LTE (Long Term Evolution) and the rising number of wireless hotspots in major cities has brought about a downward trend in PSTN activity. VoIP is more efficient than PSTN, and technology improvements in these areas have been instrumental in allowing VoIP to spread to the mobile environment.
mVoIP achieves the separation of carriage and content, where the network is used to carry the data without being aware of what it is. Location sharing is not available through operator mVoIP services, raising minor issues such as emergency services being unable to locate the caller’s position. This could, however, be solved by regulation.
mVoIP traffic is often referred to as OTT traffic as it is carried ‘over the top’ of cellular networks as data packets, often terminating as Wi-Fi traffic, thereby avoiding the costs associated with landing traffic on cellular networks. The main operators in this market are those who provide the OTT services. Common names in downloadable applications are Skype, Rebtel, WhatsApp, LINE and Kakao Talk.
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