I wish they would push the calling aspect of Microsoft Teams more. The technology is great:
1. Receive business calls from anywhere and any handset or computer. Seamlessly transfer and pick up the call on any device. Can be linked to inbound 1800, 1300 numbers, landline numbers, etc.
2. Can do call forwarding, ring-out forwarding, and voice messages
3. Voice messages are recorded, transcripted and the audio file and text transcript emailed to you. In many cases you don't even need to listen to the audio
4. Users can have their own inbound phone numbers (!) and outbound phone numbers (!) and i.e. push these automatically into email signatures, all centrally managed from Microsoft 365 Admin
5. Teams Desk phones require just an ethernet connection to work, don't require any SIP HW or configuration, and can be hotdesked in a few seconds
But the real issue is that the commercialization of it was poor. Microsoft outsourced the phone switchboard part to third party providers/resellers of the Teams calling packs, and these are usually small to medium SMB that operate like used car salesman and have stupid pricing models, i.e. minimum 10 phone numbers or users (in Australia, anyway) or sell you like four differently named confusing calling packs and addons that nobody can understand.
In the case of Telstra, they wanted $5000 (!!) for a consultant to setup a $10/user/mo Teams calling plan and wouldn't let us take out an account without going through a setup consultant. Similarly, another big telco we talked to required a minimum order of around $200/mo. For goodness sake, it's a SaaS, you should be able to just go online and order it without talking to anyone. A novel product and great idea, with truly poor commercialization and ZERO regulation of their partner network and their allowed pricing models.