Own the customer. Keep the margin.
Spanvox is the white-label, multi-tenant platform behind your calling product. Resell a branded softphone and Microsoft Teams Direct Routing to your customers, bridged to the PBX and carrier you already run, while we stay invisible behind your brand.
- White-label
- Multi-tenant API
- Keep your margin
- Free to try
A calling product to sell, not a project to build
Add modern mobile, desktop and Teams calling to your portfolio without building or operating the stack.
Wholesale economics
Own the customer relationship and keep the recurring margin. You set the price, your brand is on the invoice, Spanvox stays invisible.
White-label, end to end
Your brand, colours and languages, apps under your own store accounts and push identity, per-tenant or custom domains.
Multi-tenant from day one
Onboard hundreds of customers from one platform with isolated tenants and an idempotent provisioning API.
Three products to sell
A native softphone bridged to any PBX, Microsoft Teams Direct Routing, and an SBC security edge, all under your name, to the same customers.
No infrastructure to build
No SBCs to certify, no push gateways, no NAT traversal to engineer. We run the carrier-grade platform; you sell.
Fast time to market
Launch a calling product in days, not a multi-quarter build, and add customers with an API call.
One dashboard across every tenant
Watch quality, routes and live endpoints across your whole customer base, with the SIP trace and CDRs behind any call. Resell the view to your customers under your brand.
Carrier-grade under the hood, watched around the clock
The parts that decide whether you can build a business on us: a globally redundant network, real security, and a team that never sleeps. Serious infrastructure for serious operators.
Globally redundant node pool
Registrations and calls run on a pool of redundant nodes across regions, on an anycast backbone. There is no single point of failure: if a node degrades, traffic shifts the same second.
GeoDNS routing & failover
GeoDNS steers every device to the nearest healthy node and reroutes automatically on failure, so latency stays low and outages stay invisible to your customers.
VoIP security, end to end
TLS and WSS signalling, SRTP and DTLS media, terminated on hardened Session Border Controllers. Credentials are encrypted at rest and never exposed to the device.
Toll-fraud protection
Per-endpoint concurrency caps, registration rate-limiting and automatic IP banning contain abuse before it ever reaches a bill, the number-one worry for any ITSP.
Observability as standard
A real-time view of every registration leg, live device, call and CDR with MOS scoring. It ships with the platform, not as a paid add-on.
24/7 NOC
A network operations centre watches the platform around the clock, with proactive response, so problems are caught and fixed before your customers ever feel them.
For ITSPs and PBX vendors
What does Spanvox offer ITSPs and PBX vendors?
A white-label, multi-tenant calling platform you resell under your own brand: a native softphone bridged to any SIP PBX, plus Microsoft Teams Direct Routing as a service. You keep your carrier, your numbers and your margin.
Do I resell under my own brand?
Yes. Apps ship under your Apple and Google accounts with your push identity, your colours and your domains, so your customers only ever see you, never Spanvox.
Is it multi-tenant?
Yes. Spanvox is multi-tenant from day one, with per-tenant SIP domains and an idempotent provisioning API, so you can onboard and isolate hundreds of customers from one platform.
What can I sell?
A branded mobile and desktop softphone with BYOD SIP, Microsoft Teams Direct Routing, and an SBC security and trace edge, all from the same multi-tenant platform and API, under your brand.
Do I keep my carrier and my margin?
Yes. Spanvox bridges to the PBX and carrier you already run, so you keep your trunks, your rates and the recurring revenue, rather than reselling someone else’s minutes.
How fast can I launch?
Days. The platform, push, NAT traversal and SBCs are already built, so you provision a tenant, brand the app and go live instead of funding a multi-quarter project.
Add calling to your portfolio, under your brand
Start free on one domain, then scale per seat as you onboard customers.