@YETIANRI EMMANUEL OUSMANE SORI
As above said, VoIP allows you to make phone calls over the internet rather than traditional phone lines. Microsoft Teams Phone supports VoIP phone calls to anyone, whether they’re using a landline, mobile phone, or the Teams app. If you want to stay connected while working from any location, whether in the office, on the go, or at home, with voice and video calls through VoIP and PSTN with Teams Phone, you could see its plan and pricing from here.
Then you need to set up phone systems, the following steps are for your reference:
Step 1: Purchase and assign Phone System licenses.
Step 2: Select PSTN connectivity options.
Step 3: Get and assign phone numbers for users and services.
Step 4: Set up emergency calling.
Step 5: If you want to set up an auto attendant.
Step 6: If you want to set up call queues.
Step 7: Set up additional Phone System features.
Step 8: Manage the deployment.
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