Direct Routing for Microsoft Teams gives you the best of both worlds by allowing you to leverage all the benefits of Teams while staying with your current provider for your lines and minutes. In essence, Direct Routing enables a session border controller (SBC) to mediate between your on-premises PSTN or SIP trunk and the Microsoft Teams service.
Cloud
Enabled on a physical or virtual SBC, and located either on-premises or in a data center/cloud, Direct Routing works on the same principle as an SBC connecting one SIP communication entity to another SIP entity running a different flavor of the SIP protocol.
When an incoming call is received, the SBC mediates a session from the carrier and transforms it to match the flavor and requirements of Microsoft Teams. It is then passed through to the Microsoft Teams client and on to the intended user. In the same way, an outgoing call is routed through to the SBC and then to the recipient via the existing PSTN or SIP trunk.
One of the best things about this solution is that it’s fully scalable, from just a few users to tens of thousands. It reduces the total cost of ownership by giving you lower calling charges and helps you get total control of your communications solution. For example, you can connect additional communications systems in parallel via the same SBC.
