In order to launch own app to app VoIP calling service, you need have a softswitch solution that supports app-to-app calling functionality. Usually, a good VoIP softswitch solution supports a range of features that help service providers to deliver their VoIP services in divergent ways. App-to-app calling has become very prominent among worldwide users so the demand for it is always on the rise....
How to Launch Own App to App VoIP Calling Service?
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