When the mobile network is unavailable: why start calls over the Internet
VoWiFi technology allows making calls by phone number outside the coverage area of the mobile network using Wi-Fi. Today, we decided to discuss the relevance of such service and key ways to set it up: from OTT and UMA to untrusted access to EPDG. We will also look at the prospects of the technology and the challenges faced by telecom operators offering the service of calls over the Internet.
