In areas with limited or no cellular coverage, WiFi Calling represents a cost-effective alternative to traditional radio network expansion.

With a stable Wi-Fi connection, subscribers can make voice calls with familiar quality and reliability, billed from their primary mobile account at standard tariffs.

For operators, WiFi Calling:

• significantly improves coverage without heavy CAPEX;
• increases traffic volumes in previously underserved areas.

The solution is fully 3GPP-compliant and supports seamless handover between WiFi and LTE/3G, without requiring any mobile application installation.

The platform integrates with the IMS core and billing systems, supporting protocols:

SWu, SWm, SWx, S2b, S2a, S6b.

It supports multiple authentication methods, including EAP-SIM and EAP-TLS, enables services for home and visiting subscribers, manages user profiles and provides detailed statistics.