Jan 25 2021 05:23 AM
Jan 26 2021 08:51 AM
I have both the PSTN for DID and making & receiving phone calls and also have the Conference Add-on.
I can tell you a little trick to make outgoing calls but if you expect to receive in-bound calls direct it doesn't work.
If you only want to make outbound calls you can purchase Conference Add-on and get the pooled minutes that come with that subscription. Then when you want to call out, you can use the Add Participants and dial out to a number. The number that is displayed on Caller-ID is the number of the bridge line.
Jan 26 2021 01:24 PM
@nc-novelt With Microsoft Calling plans will need to have a number assigned, but you can then use a CallerID Policy to replace that, for example with a number for a reception or contact centre if you don't want the direct number shown. Manage caller ID policies in Microsoft Teams - Microsoft Teams | Microsoft Docs
If you are using an SBC then no you don't need an externally routable number, my employer gives a core number with an 'extension' number. I don't care as no one has ever called me on it, I cant quite imagine why they would.