We Believe Global Communications Should Be as Accessible as Air
VoiceBuy is the cloud-native telecom infrastructure platform built by WESY S.A.S — a France-based technology company with a single conviction: that carrier-grade voice infrastructure should be deployable by any ambitious operator, anywhere in the world.
2018
Founded
OUR STORY
Born from Frustration with Legacy Telecom.
In 2018, the founders of WESY S.A.S recognized a fundamental problem: the global telecom industry was locked behind walls of proprietary hardware, opaque carrier agreements, and CAPEX requirements that locked out innovative new operators before they could even launch.
We set out to dismantle those walls. VoiceBuy was built from the ground up as a cloud-native platform — not a legacy system retrofitted for the cloud, but one conceived for a world where compute is infinite, latency is low, and integration is everything.
Today, from our headquarters at 231 rue Saint-Honoré in Paris, our engineering teams design the infrastructure that powers online operators, wholesale carriers, enterprise PBX deployments, and everything in between across 60+ countries.
"Global communications should be as indispensable and accessible as air and water."
OUR STORY
Our Core Values
Speed as a Standard
We build for operators who can't afford to wait. From deployment to support, our culture is wired for velocity — because in telecom, every minute of delay is revenue lost.
Radical Transparency
No hidden fees, no opaque routing tables, no vendor lock-in. You see your traffic, your costs, and your performance in real time - always.
Partnership over Transacting
Our team includes engineers, not just salespeople. When you work with VoiceBuy, you get a technical partner invested in your success — not a vendor who disappears after contract signing.
Milestones that Shaped Us
WESY S.A.S Founded
Incorporated in Paris, France with the vision of democratizing carrier-grade telecom infrastructure.
VoiceBuy IMS Cloud Launch
First cloud-native IMS platform enabling MVNOs to launch without hardware. Initial 12 operator customers onboarded.
Softswitch Expansion
Launched Sippy softswitch rental and wholesale VoIP routes across 40+ countries.
Native VoWiFi Support
Pioneered native WiFi Calling from smartphone dialer. Full eSIM, USIM, and ISIM support.
500+ Clients, 60+ Countries
Operating at full scale: 10B+ minutes routed, 99.99% uptime globally.
Ready to Build with VoiceBuy?
Join 500+ operators and enterprises powering their communications on our cloud-native infrastructure.