Phone systems can be connected with Teams in three ways. One way is to use Microsoft as your Calling Plan provider and deploy the Microsoft all-in-one Calling plan solution called “all-in-the-cloud”. Microsoft is the Public Switched Telephone Network (PSTN) Carrier in that case with limited functionality.
MachCloud, as a worldwide telephony Carrier, on the other hand, provides multiple options to connect to the PSTN. In this way, users can use telephone numbers to make phone calls anywhere in the world. The Simplest Solution is a Phone system with a MachCloud Calling Plan.
We can set up solutions with Teams Direct Routing or even connection between your own cloud-based telephony system and your Teams users.
This way, it is possible to configure interoperability between existing phone systems and Microsoft Teams calling solutions. There are options for a hybrid solution as well.