Solutions

White-label calling, your brand on every line

One platform for ITSPs and PBX vendors: a branded mobile softphone bridged to the PBX you already run, and Microsoft Teams Direct Routing, all multi-tenant and sold under your name.

White-label softphone

A native softphone under your brand and your app store accounts, bridged to any SIP PBX.

Add a mobile app to your PBX

No SIP trunk, no dialplan edits, no firewall changes. We register like a softphone.

Push that wakes the app

APNs/FCM with CallKit and ConnectionService so calls ring even when the app is asleep.

BYOD SIP

Softphone provisioning API

Idempotent REST, signed webhooks and CDRs to automate branded accounts at scale.

Microsoft Teams

Teams Direct Routing as a service

Certified, multi-tenant, white-label SBCs that bridge Microsoft Teams to your carrier and PBX.

Operator Connect vs Direct Routing

How the two Microsoft Teams calling models compare for ITSPs and PBX vendors.

Security & edge

SBC as a Service

A hosted SBC edge: SIP firewall, DDoS and toll-fraud protection, and built-in SIP trace in front of your existing infrastructure.

Start free on a single domain

Every Spanvox solution is free to try and metered as you grow, under your brand.

Get started See pricing