Teams is great!
A. To make calls from Teams: Teams allows you to make calls inside and outside the district from ANY device that is logged into Teams. This means you can stay in touch with colleagues, and even parents, from Teams.
For more information on making calls, reference this Knowledge Base article: Call a Phone Number
B. To receive calls from Teams: Teams will ring any device you have logged in. This means you can answer from your computer, a desk phone, or even your cell phone.
For more information on receiving calls, reference this Knowledge Base article: Answering a Call
C. Listening to Voicemail: You have the ability to listen to and manage your Voicemail from any device.
For more information on listen to Voicemail, reference these Knowledge Base articles: