WiFi Calling & WiFi Offload Solutions
Enable seamless voice and data connectivity across WiFi and cellular networks. Reduce infrastructure costs, improve coverage in challenging environments, and deliver carrier-grade quality with secure EAP-SIM/AKA authentication.
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Complete WiFi Calling & Offload Platform
Enterprise-grade authentication infrastructure for carriers and large organizations
Voice over WiFi (VoWiFi)
Enable HD voice calls over WiFi networks with carrier-grade quality. Extend coverage to indoor areas with weak cellular signal using existing WiFi infrastructure.
Automatic WiFi Offload
Seamlessly redirect mobile data traffic from cellular to WiFi networks. Reduce network congestion and infrastructure costs while improving user experience.
EAP-SIM/AKA Authentication
Leverage SIM-based authentication for zero-touch connectivity. Users automatically connect to trusted WiFi networks using their mobile credentials.
Hotspot 2.0 / Passpoint
Deploy Passpoint-enabled networks for automatic, secure connections. Eliminate manual SSID selection and credential entry for subscribers.
IPsec Tunnel Security
All WiFi calling traffic is encrypted through IPsec tunnels to the carrier's ePDG. Ensure voice and data security equivalent to cellular networks.
Seamless Handoff
Maintain active calls and data sessions during WiFi-to-cellular transitions. Advanced handoff protocols ensure zero dropped calls.
WiFi Calling & Offload Use Cases
Deployment scenarios across carriers, enterprises, and venues
Enterprise Buildings
Enable WiFi calling in office buildings with poor cellular coverage. Employees make calls using their business numbers over corporate WiFi.
Stadiums & Venues
Offload massive data traffic during events. Support thousands of concurrent users without overwhelming cellular infrastructure.
Hotels & Hospitality
Guests stay connected with their home carrier service via hotel WiFi. Eliminate roaming charges and coverage dead zones.
Rural & Remote Areas
Extend carrier coverage to areas without cell towers. Community WiFi networks enable voice services in underserved regions.
Public Transportation
Provide WiFi calling on trains, buses, and subways. Passengers maintain connectivity through tunnels and underground routes.
Healthcare Facilities
Reliable voice communications for staff and visitors in RF-sensitive environments where cellular signals may be restricted.
Authentication Technologies
Carrier-grade EAP methods for secure, seamless WiFi connectivity
EAP-SIM
Authentication using 2G SIM credentials. Ideal for legacy device support and basic WiFi offload deployments.
EAP-AKA
3G/4G USIM authentication with mutual authentication and enhanced security. Standard for LTE WiFi offload.
EAP-AKA'
Enhanced AKA with improved key derivation. Required for 5G networks and VoWiFi deployments with ePDG.
Hotspot 2.0
IEEE 802.11u and Passpoint for automatic network discovery and secure connection.
Benefits for Carriers & Enterprises
Reduce costs and improve service quality with WiFi calling and offload
Reduce Infrastructure Costs
Offload traffic to existing WiFi instead of building new cell towers.
Extend Coverage
Provide service in buildings, basements, and areas with poor cellular signal.
Zero-Touch Connectivity
SIM-based auth means users connect automatically without passwords.
Network Analytics
Track usage patterns, handoff success rates, and quality metrics.
Improved QoE
HD voice quality and reduced latency on high-capacity WiFi networks.
Enterprise Security
Encrypted tunnels and mutual authentication protect all traffic.
How WiFi Calling Works
Secure voice over WiFi in four simple steps
Network Discovery
Device discovers Passpoint-enabled WiFi network via ANQP queries
EAP Authentication
SIM credentials authenticate user via EAP-AKA' through RADIUS
IPsec Tunnel
Secure tunnel established to carrier's ePDG gateway
Voice & Data
Calls and data routed through carrier network via WiFi
Ready to Enable WiFi Calling?
Deploy carrier-grade WiFi calling and offload authentication with IronWiFi's cloud RADIUS platform. Support EAP-SIM, EAP-AKA, and Hotspot 2.0 out of the box.