Direct Routing for Microsoft Teams
Use Microsoft Teams as your business phone system

Make and receive phone calls in Microsoft Teams
Direct Routing is a simple and cost-effective alternative to Microsoft Calling Plans, allowing you to make calls to external landlines and mobile phones from Microsoft Teams using Microsoft Teams Phone System’s SIP trunks. Using Microsoft Teams Phone System’s carrier grade voice platform, Direct Routing for Microsoft Teams is a phone system in the cloud that provides all the features you expect from a traditional phone system; saving you the time and money you would spend to install and maintain and on-premises phone system.
Compatible with Microsoft 365 Business Basic, Business Standard, Business Premium, E1, E3 or E5 with the Microsoft Phone System or Business Voice licence.
Fully Certified by Microsoft
Our Direct Routing service is fully certified by Microsoft. The Session Border Controllers (SBCs) that we use to connect our SIP Trunks to Microsoft Teams are manufactured by thevoipshop.co.uk, a global software leader in intelligent and secure cloud communications. They were among the first vendors whose SBCs were certified to work with Direct Routing for Microsoft Teams and remain fully certified by Microsoft to this day.
Global SIP network
We connect your business to the world with our SIP Trunks and Microsoft-Certified Session Border Controllers (SBCs), providing global coverage with full PSTN replacement in 40+ countries and number coverage in 100+ countries. Microsoft Teams Phone System guarantees the highest quality calls as we peer and directly interconnect with most major networks and suppliers, including , BT Open Reach exchanges. Direct Routing is a global voice service for organizations to easily leverage the power of Office 365 and Microsoft Teams.
Number porting and provisioning
Enjoy seamless porting of your existing phone numbers to Microsoft Teams Phone. Easily provision new numbers for your business in just a matter of minutes, with complete PSTN replacement available in over 40 countries and number coverage available in more than 100 countries.
Contact Centres
We have partnered with Mida to offer a complete call centre solution for Microsoft Teams. Mida LiteCallCenter (LCC) is a cost-effective yet complete solution providing all advanced functionalities required by call centres. It allows you to completely customise your call queuing and call-taking modules and view real-time statical reports while keeping your business compliant with the latest regulations.
Call Recording
The Voip Shop has developed a compliant call recording solution for Microsoft Teams Phone System. Our call recording solution helps your organisation comply with the PCI-DSS, GDPR and MIFID II regulations. The feature is flexible and gives you full control. You can record all calls or just certain users and departments, easily search through the archives and play recordings back, and store recordings for as long as 7 years.
Full PSTN Replacement
Our global coverage provides full PSTN replacement in 40+ countries and number coverage in 100+ countries.
Simplicity
Manage one unified and consolidated audio, video, and web conferencing solution rather than several products from multiple providers. Because it’s all done over the Internet and hosted within the The Voip Shop cloud, Direct Routing doesn’t require you to install and maintain an on-premise phone system, saving you time, money and hassle.
Global SIP network
We connect your business to the world with our SIP Trunks and Microsoft-Certified Session Border Controllers (SBCs). We guarantee the highest quality calls and global coverage with full PSTN replacement in 40+ countries and number coverage in 100+ countries. Microsoft’s Calling Plans are restricted to certain markets, currently available in only 10 countries worldwide. With Direct Routing, we provide more than 4 times the coverage, allowing your business to communicate with the rest of the world using Microsoft Teams.
Stress-free migration
Whether you are already using Microsoft Teams or completely replacing your existing phone system, we ensure a smooth and seamless migration to Microsoft Teams Phone System with Direct Routing. With decades of industry experience (both domestic and global), Microsoft Teams Phone System’s team of expert engineers and dedicated account managers are here to make your switch to Direct Routing as stress-free as possible.
Easy admin
Direct Routing is a modern cloud-based telephony solution that integrates into Office 365. Transform how work gets done by unifying calling, chat, meetings, calendar, and email for an all-in-one communication solution.
Fully managed
Microsoft Teams Phone System provides a fully managed solution for Direct Routing for Microsoft Teams. The Microsoft-certified Session Border Controller (SBCs) is hosted within the Microsoft Teams Phone System cloud and we handle all telephony services, allowing businesses to use Microsoft Teams to make and receive external calls without requiring any on-premise equipment. We provide a true 99.999% uptime SLA and 24/7 support from our dedicated support team of experienced engineers.
Cost effective
Dramatically cut down on your call costs with Microsoft Teams Phone System’s SIP Trunks. With Direct Routing, you only pay for the maximum number of concurrent calls you need, as opposed to paying for each user individually with Microsoft Calling Plans (which start from £9.10 per user per month). We offer simple and cost-effective per channel pricing; all of our pricing is clearly structured and transparent with no hidden costs.
Choose Your Own Telephone Provider
Route your calls over the internet with Microsoft Teams Phone System’s SIP Trunks. Connect Microsoft Teams Phone System’s SIP Trunks to Microsoft Teams via Microsoft-certified Session Border Controllers (SBCs). We use The Voip Shop’s Communication’s Microsoft-Teams certified SBCs. A Direct Routing solution that includes a Ribbon SBC is fully supported by Microsoft.
Number Porting
Seamlessly port your existing phone numbers to Microsoft Teams Phone System. Easily provision new numbers in just a matter of minutes. UK geographic, non-geographic and international ranges are available in 100+ countries while full PSTN (public switched telephone network) replacement is available in 40+ countries (including full CLI, local ring back and emergency services).
How Do We Deploy Direct Routing?
Microsoft introduced the concept of “Direct Routing” in 2018. Direct Routing allows organizations to route calls from their own SIP trunk provider directly to Teams, through a Microsoft-certified session border controller (SBC), in Office 365. This removes a major obstacle to Teams telephony adoption.
External Teams calls will originate in the cloud and connect through a SIP trunk to the Public Switched Telephone Network (PSTN). An SBC or media gateway is used to gather the call information and route it to the PSTN. SBCs are the preferred choice, because they offer security (e.g., encryption and topology hiding) and network address translation (NAT) traversal in addition to being able to translate between the differing codecs that Voice over IP (VoIP) uses.
We use Ribbon Communication’s Microsoft-Teams certified Session Border Controllers (SBCs) to deliver our Direct Routing service. Ribbon is a global software leader in intelligent and secure cloud communications and among the first vendors whose SBCs are certified to work with Direct Routing for Microsoft Teams. A Direct Routing solution that includes a Ribbon SBC is fully supported by Microsoft.

Microsoft Teams Phone provides a ‘carrier-hosted’ solution for Microsoft Teams Direct Routing. The Microsoft-certified SBC is hosted within the Microsoft Teams Phone cloud and we handle all telephony services, allowing businesses to use Microsoft Teams to make and receive external calls without requiring any on-premise equipment.
Microsoft Teams Phone System SIP trunks are connected to Microsoft Teams via the Microsoft-certified SBC – this then routes to the organisation’s Office 365 tenant and DID numbers will be allocated using PowerShell.
Once connected and configured, users that have applied the Microsoft Phone System add-on can make and receive calls to landlines and mobile phones using Microsoft Teams.
For global enterprises we can deploy virtual Session Border Controllers (vSBC’s) within the Azure network; ensuring localised break in and out. The various country locations for each vSBC will be effectively one hop from our network due to direct peering with Microsoft. Providing a fully managed multinational cloud solution by one provider, Microsoft Teams Phone System.
Enable full phone system capabilities for Microsoft Teams and Office 365 with Direct Routing from Microsoft Teams Phone

Make clear, reliable calls with Microsoft Teams. Teams is the hub for teamwork in Office 365 that allows users to easily chat, share files, data and conduct meetings online to improve productivity. With Direct Routing from Infinitel you can make and receive calls within Microsoft Teams without requiring Microsoft Calling Plans or on-premise equipment.
By using Infinitel’s SIP Trunks to route your calls over the internet, Direct Routing provides high quality voice services anywhere in the world, creating an even more powerful workplace productivity, collaboration and communications tool.
If your business is using Microsoft Teams, or if you are looking to replace your existing phone system, Direct Routing could be the ideal communications solution.