In the 4G/5G era, users expect communication services to work anywhere,anytime. But in places like shopping malls, basements, airports, or when roaming abroad, cellular coverage often struggles. This is where Untrusted Access VoWiFi comes in—turning even the most ordinary WiFi into a secure and reliable channel for voice and video calls.
What Is Untrusted Access?
“Untrusted WiFi access” means using networks outside the operator’s direct control—such as home routers, public hotspots, or overseas WiFi. By nature, these networks can’t be considered secure.
Here is where the ePDG (Evolved Packet Data Gateway) makes the difference. It builds an encrypted IPSec tunnel between the device and the operator’s core network, ensuring that calls remain private, safe, and seamless. In short: even “untrusted” WiFi becomes carrier-grade.
Why It Matters – Three Clear Benefits
Broad Reach
Any WiFi can be used—home, hotel, café, or international roaming—giving users coverage wherever they go and helping operators expand services without extra infrastructure.
Trusted Security
Strong IPSec encryption shields communication from eavesdropping or leaks, protecting user privacy and strengthening operator credibility.
Cost Savings & Better Experience
Operators avoid the expense of building new base stations in every coverage gap, while users save on roaming fees by calling directly over WiFi abroad.
IPLOOK’s Advantage
At IPLOOK, our Untrusted Access VoWiFi solution ensures:
HD voice & video calls in any WiFi environment
Smooth handover between WiFi and VoLTE
End-to-end security through IPSec tunnels
Scalable deployment, reducing CAPEX for operators
By adopting this solution, operators can fix indoor coverage challenges, improve roaming experiences, and unlock new service revenues—while users enjoy reliable, secure, and cost-effective communication.
Untrusted Access VoWiFi is not just a backup for weak coverage—it’s a strategic enabler in the 4G/5G all-scenario era. With IPLOOK’s carrier-grade solution, operators can turn every WiFi into an opportunity to deliver better services and stronger customer loyalty.
