Make Calls Anywhere - Even Without Cell Signal
Ever been in a basement, warehouse, or building where your phone shows no bars? With WiFi calling, you can make and receive calls over any WiFi network - using your regular phone number. It's automatic, secure, and sounds even better than regular calls.
Included with Employee WiFi plan (from $5/user/mo, billed annually) · No setup fees · No credit card needed
WiFi calling authentication enables voice calls over WiFi networks using standard phone numbers, requiring proper network configuration for carrier trust. IronWiFi provides the RADIUS infrastructure and Passpoint profiles that carriers require for WiFi calling, ensuring encrypted voice traffic receives priority QoS treatment across enterprise and public WiFi networks.
What Do You Need for WiFi Calling?
Built for carriers and big organizations who want it done right
Crystal-Clear Voice Calls
Make HD calls over WiFi that sound even better than regular phone calls. Great for buildings, basements, and anywhere cell signal struggles to reach.
Automatic Data Offload
When WiFi's available, your phone automatically uses it instead of eating through cellular data. Saves money, reduces congestion, and often runs faster too.
SIM-Based Login (No Passwords)
Your phone's SIM card handles everything. Users connect automatically to trusted WiFi networks - no passwords to remember or type in.
Passpoint - Just Works
No more hunting through WiFi network lists. Passpoint-enabled networks connect your phone automatically and securely - like magic.
Bank-Level Encryption
Every call and bit of data gets encrypted through secure tunnels. It's just as safe as - actually, often safer than - regular cell calls.
No Dropped Calls
Walk from WiFi to cellular and back again - your calls stay connected. You won't even notice the switch happening.
Where Does WiFi Calling Make the Biggest Difference?
Real-world places where this makes a huge difference
Office Buildings
Thick walls and metal structures kill cell signals. With WiFi calling, your team stays connected using their regular work numbers - no dead zones.
Stadiums & Events
When 50,000 people pull out their phones at once, cell towers can't keep up. WiFi offload handles the crowd without breaking a sweat.
Hotels
Guests can call home without roaming charges. They use their own phone number over hotel WiFi - no apps or weird workarounds needed.
Rural Communities
No cell tower nearby? No problem. As long as there's WiFi, people can make calls. Great for remote areas that carriers don't reach.
Trains & Subways
Tunnels and underground stations are notorious dead zones. WiFi calling keeps passengers connected the whole journey.
Hospitals & Clinics
Some medical equipment doesn't play nice with cell signals. WiFi calling lets staff and visitors stay in touch without any interference.
What Technology Powers WiFi Calling?
How we keep connections secure and automatic
EAP-SIM
Uses your SIM card to log you in automatically via 802.1X authentication. Works great with older devices and simpler setups.
EAP-AKA
The go-to for 4G/LTE networks. Your phone and the network verify each other - double the security.
EAP-AKA'
The 5G-ready version with even stronger encryption. Required for modern WiFi calling setups.
Hotspot 2.0
Your phone finds and connects to trusted networks automatically. No more scrolling through WiFi lists.
Why Do Carriers and Businesses Choose WiFi Calling?
Save money, make customers happy, and extend your reach
Skip the Cell Tower Bills
Why build expensive new towers when you can use WiFi that's already there?
Reach the Unreachable
Cover those tricky spots - deep inside buildings, underground, wherever cell signals fear to go.
It Just Works
No passwords, no setup, no support calls. Users connect automatically with their SIM.
See What's Happening
Track usage, monitor call quality, and spot issues before users complain.
Better Call Quality
HD voice that sounds clearer than cell calls. Your users will actually notice the difference.
Strong Security
Everything's encrypted end-to-end. Your calls and data are as secure as they get.
How Does WiFi Calling Work?
Four steps, all happening in the blink of an eye
Find the Network
Your phone spots a compatible WiFi network nearby
Log In Automatically
Your SIM card proves who you are - no password needed
You're Connected
Make calls, send texts, use data - all over WiFi
Ready to Get Started?
We'll help you set up WiFi calling that just works. EAP-SIM, EAP-AKA, Hotspot 2.0 - it's all built in and ready to go.
Got Questions? We've Got Answers
What is WiFi Calling?
WiFi Calling lets you make and receive phone calls over any WiFi network, using your regular phone number. It's perfect for places where cell signal is weak, like basements or buildings with thick walls.
What is WiFi Offload?
WiFi Offload automatically moves your phone's data traffic from cellular to WiFi when available. It saves carriers money on infrastructure and often gives you a faster, smoother experience.
What authentication methods do you support?
We support EAP-SIM, EAP-AKA, EAP-AKA', and EAP-TLS - these let your phone connect automatically using your SIM card. We also support Hotspot 2.0/Passpoint so your phone finds and joins trusted networks on its own.
How does seamless handoff work?
When you walk from WiFi to cellular coverage (or vice versa), your call stays connected without dropping. You won't even notice the switch happening - it's that smooth.
Is WiFi Calling secure?
Absolutely. All your calls and data travel through encrypted tunnels, so they're just as secure as (often more secure than) regular cell calls.
Can enterprises deploy WiFi Calling?
Yes! Businesses can enable WiFi calling on their office networks. IronWiFi provides the authentication backend that makes it all work securely with your carrier.