Call2Teams - Trunks: Use Your Own Carrier in Teams

Qunifi Ltd

Connect Microsoft Teams to your current phone service provider. No hardware or software required.

Call2Teams for Trunks is a global cloud platform that connects SIP Trunks directly into Microsoft Teams in minutes, enabling you to keep your existing voice provider with lines, numbers and call bundles.

Enable users to enjoy the full Microsoft Teams phone and calling experience, powered by your existing phone service provider. Call2Teams for Trunks allows you to use Teams Direct Routing provided as a Cloud Service that connects your existing lines, numbers and call bundles to users, groups and call queues in Microsoft Teams. There’s no hardware or software to install and can be set up in minutes. Bring all users under one collaboration platform by using Microsoft Teams for Collaboration, messaging and voice; the user’s Teams experience is seamless, and users can use all PC, Mac, Mobile and certified Teams devices to make calls; it’s the pure Microsoft Teams calling experience, provided without disruption to business-as-usual.


  • The Call2Teams global gateways provide a simple link between your existing phone service and the Office 365 Teams platform.
  • Teams users get to make and receive calls using their normal DiD and extensions, no number porting is required.
  • Call bundles and pools are shared between all Teams users avoiding costly per-user plans.
  • No Software or hardware to install, set-up takes around 10 minutes.
  • No special configuration of your phone service, Call2Teams – Trunks can work with virtually all SIP provider who use registration for Trunks.
  • Simply connect your incoming numbers to users, groups and auto-attendants as required.
  • Enterprise-grade, high-availability infrastructure that runs on Microsoft Azure.
  • No minimum user quantity - from 1 to 5,000 users
  • Pay as you go monthly subscription model
  • No up-front cost
  • Fully self-managed cloud service.
  • 24/7/365 monitoring services with real-time service alerts.
  • Users require the Office 365 Phone System add-on, Microsoft 365 Business Voice (without calling plan) or E5 licences to use calling in Microsoft Teams
  • For more information go to

Customers having trouble with the AppSource country setting when purchasing Call2Teams, please follow the link in the 'Learn more' section below.