Tom Talks Microsoft Teams and Microsoft 365 news and opinions

Microsoft adding unlimited Microsoft Teams Meeting PSTN dial-in to enterprise, business, frontline, and government licences


In a Microsoft blog post today from Jared Spataro, Corporate Vice President for Microsoft 365, giving a heads up of coming Microsoft 365/Office 365 price rises, Microsoft also announced something really exciting for Microsoft Teams.

“And today, we are announcing that we will add unlimited dial-in capabilities for Microsoft Teams meetings across our enterprise, business, frontline, and government suites over the next few months.”


Currently, Microsoft’s PSTN Audio Conferencing is included with Microsoft 365 E5 and Office 365 E5 but requires an add-on licence for other licences below this such as E3 (a very common licence for enterprises) and other business, frontline and government licences.

The PSTN audio conferencing licence is currently listed at $4.00/month per user, per month, or for enterprise customers, there is also a Pay Per Minute PSTN audio conferencing option.

For a better understanding of Microsoft PSTN audio conferencing check out my blog Understanding PSTN Dial-In Audio Conferencing with Microsoft Teams

E5 is about 8% of the Office 365 commercial base or around 24 million users. Office 365 as a whole has over 300 million commercial paid seats, so this move will open up Microsoft Teams PSTN dial-in conferencing to a very large number of customers with no additional licence required.

Of course, Microsoft is also increasing the prices of a lot of these plans,

  • Office 365 E1 from $8 to $10 per user per month
  • Office 365 E3 from $20 to $23 per user per month
  • Office 365 E5 from $35 to $38 per user per month
  • Microsoft 365 Business Basic from $5 to $6 per user per month
  • Microsoft 365 Business Premium from $20 to $22 per user per month
  • Microsoft 365 E3 from $32 to $36 per user per month

The increases are less than, or in the case of E3 equal to the $4 PUPM for the Microsoft PSTN conferencing addon. Of course, that logic doesn’t apply to E5 which already has PSTN Audio Conferencing but still gets a price increase. There are no price increases for Education or Frontline worker plans.

What about the cost to dial out from Microsoft Teams Meetings?

Some users want to have the meeting dial their phone or want to dial out to bring a PSTN/Phone user into the meeting. The blog specifically says “unlimited dial-in capabilities”. If it works like the current Microsoft PSTN conferencing licence, each licenced user gets a pooled 60 minutes per user per month that can be used to dial out to non-premium numbers in ANY of the Zone A countries. After that, or for dialling out to non-Zone-A countries, there is a per-minute cost which is covered via communication credits. More details from Microsoft docs: 

I’ve reached out to Microsoft to confirm what licences/SKU’s will be included and will update the blog when I have further detail. Be sure to subscribe to my email update to keep up with the latest Microsoft Teams news.

About the author

Tom Arbuthnot

A Microsoft MVP and Microsoft Certified Master, Tom Arbuthnot is Founder and Principal at Empowering.Cloud as well as a Solutions Director at Pure IP.

Tom stays up to date with industry developments and shares news and his opinions on his, UC Today Microsoft Teams Podcast and email list. He is a regular speaker at events around the world.

  • Since the Business Voice value proposition is that you get Phone system + Audio Conferencing, and now AC is going to be free for all users.
    Does this mean Business Voice will decrease in price now it won’t bundle AC anymore? In countries outside US/UK/CA Business Voice without calling plan is more expensive than Phone System alone, because of the included AC.


  • Hey Tom,

    have you ever heard anything about when free (dial-in) audioconferencing will be available?


  • Tom Talks Microsoft Teams and Microsoft 365 news and opinions