Currently have had a few calls where there have been a few issues adding phone numbers to resource accounts for Auto Attendant. This is just a quick guide that might be of some use.
Pre reqs if you will.
Purchase the virtual licenses for Virtual user – Sign into the M365 admin center – Go to Billing –> Purchase Services –> Add-on subscriptions – Scroll to the end to find the “Phone System-Virtual User” license. Select “buy Now” this is a free license.
Make sure you have the service numbers ready to assign to your resource account. – Admin center –> Teams –> Voice –> Phone numbers –> add –> fill in the necessary information.
Now that we have the licensing and numbers in place we need to create the resource account. The official documentation for this can be found here . My lab is hybrid so I have to first go to the 2019 Skype powershell and run the following cmdlet: