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Voice over WiFi


Seamless mobile voice and messaging over Wi-Fi

Voice over Wi-Fi (VoWiFi) is the industry standard approach for mobile service providers seeking to deliver voice and SMS/MMS services over Wi-Fi. With VoWiFi, mobile subscribers receive a seamless voice and messaging experience as they move between the macro-cellular network and existing Wi-Fi networks, such as those at the office and home.

With VoWiFi, subscribers can now receive high-performance mobile services in the exact locations they spend most of their time. It also provides a low cost international roaming solution as users can make and receive mobile calls as if they were on their home network when connected to any Wi-Fi network around the world.

For MNOs, VoWiFi addresses indoor coverage challenges in the precise locations that are typically difficult to reach with the macro network. As a result, they can see lower churn due to improved service coverage, as well as lower costs due to increased network offload.

For MVNOs and other alternative mobile service providers, VoWiFi enables adoption of a Wi-Fi First strategy. With Wi-Fi First, all subscriber voice and messaging traffic, when connected to Wi-Fi, stays on net rather than using minutes and messages from their macro cellular network partner.

Figure 1: Sonus Role in Voice over WiFi solution

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