Microsoft Teams SIP trunk

Calling & Direct Routing. SIP technology enables Teams users to call anywhere.

SIP technology allows Microsoft Teams users to call anywhere. This solution integrates your Microsoft 365 account with the Public Switched Telephone Network (PSTN).
Many businesses have started to use Microsoft Teams as a replacement for their existing PBX/UC platform.

Robust and reliable solution

Our SIP calling service connects Microsoft Teams with the PSTN via SBCs. External voice traffic is routed using SIP trunks over a business-grade IP telephony network.

Microsoft Teams SIP trunks

There’s no need for customers to deploy their own on-premise SBCs. MS Teams customers can connect using their own Cloud Phone System.

With SIP trunks for Microsoft Teams, staff don’t need to be behind their desk to make or receive their business calls.

Phones and Equipment

How to get started?

To find out more, please get in touch to arrange a requirement assessment with one of our specialists.

Our specialists are ready to guide you through the available options.


Microsoft Teams is an Office 365 solution that centralises workplace communications. It includes features to facilitate conversations and improve productivity: conference calls, video chat, document sharing, and more.

SIP Trunking is the technology and process of connecting a telephone system to traditional public networks and other systems, allowing users to communicate with anyone using an internet connection. SIP stands for Session Initiation Protocol.

SIP Trunking is essential for Microsoft Teams Direct Routing.

Direct Routing is a service that allow organisations to connect Microsoft Teams with external phone lines.

It works by using a  Session Border Controller (SBC) that can be connected to almost any telephony trunk.