You signed up for a Teams phone system because the pitch sounded clean: one app for calls, chat, video, and meetings. Then the rollout begins, and the surprises start arriving with it. Extra licenses you were not expecting. Features that do not behave the way the sales deck promised. Support paths that lead to a ticket queue instead of a person on the line.
At IParigon, we help small and mid-market businesses make a Microsoft Teams phone system work without the second-month sticker shock. Here is what most companies wish they had known before signing up.
What You Will Find in This Blog
- How Teams Phone licensing really adds up in 2026
- Features Teams Phone leaves out by default
- Who supports your phones inside Teams
- Tips for a smoother migration
- Honest thoughts and an interesting fact
- FAQ and your next step
Quick Answer for Busy Readers
Moving to a Teams phone system is rarely a one-line decision. Microsoft Teams gives you the app and the routing layer. You still need a calling license, a connection to the public phone network, and a partner to handle setup, porting, 911, and ongoing changes. The cleanest switches line up all three before signing. IParigon offers Microsoft Teams Integration on our Pro and Premier service plans, so the calling side stays predictable from day one.
What Does Switching to a Teams Phone System Really Mean?
The Teams app is the front end. The calling service behind it has to come from somewhere. There are three common paths businesses choose from:
- Microsoft Calling Plan: Microsoft is your carrier and you buy minutes directly from them.
- Direct Routing: You bring your own carrier or SIP provider and connect it to Teams through a Session Border Controller.
- Operator Connect: A certified carrier plugs into Teams natively, with no SBC needed.
Most businesses are surprised that picking Teams as the interface is only half the conversation. The other half is who carries your calls and who answers when something goes sideways.
| Path | Who carries your calls | Best fit | Watch outs |
| Microsoft Calling Plan | Microsoft | Single small office, simple needs | Higher per-user cost, fewer routing and porting options |
| Direct Routing | Your chosen carrier through an SBC | Companies with existing contracts or specialized routing | More moving parts, you need an SBC-literate partner |
| Operator Connect | A Microsoft-certified carrier partner | Most small and mid-market businesses that want real human support | Carrier choice limited to the certified list |
How Does Teams Phone Licensing Add Up in 2026?
This is the surprise that bites the hardest. The Teams app may be included in your Microsoft 365 plan, but Teams Phone is a separate product.
According to Microsoft Learn, each user who needs a phone number requires a Teams Phone license, and that license is only bundled into Microsoft 365 E5. On Business Standard, Business Premium, or E3, you pay extra for the Teams Phone add-on per user per month.
Then you stack the calling piece on top. A Microsoft Calling Plan, a Direct Routing arrangement, or an Operator Connect partner each carries its own per-user fees, taxes, and regulatory charges. The full cost of moving to Teams can land 30 to 60 percent higher than the original quote. A good partner walks you through every line item before you sign.
What Features Does Teams Phone Not Include?
Teams Phone is a solid platform built around Microsoft’s vision of how phones should work. Four places that catch businesses off guard:
SMS and MMS texting. The base Teams Phone product does not send business text messages from your main number. Customers who try to text get bounced. Some certified carriers offer SMS as an add-on, but it is not part of the core experience.
Dynamic 911 location. As Microsoft documents directly, Teams has to be configured so an emergency call from a remote employee sends the right address to dispatchers. Out of the box, the system can route the main office address to 911 even when the caller is across town.
Faxing. Teams has no native fax service. IParigon includes inbound faxes to email on our Pro and Premier service plans, so you do not need to bolt on a third product.
Carrier flexibility. If you go with a Microsoft Calling Plan, your routing and number management options are narrower than what a Direct Routing or Operator Connect setup gives you.
Who Supports Your Teams Phone System When Something Breaks?
Microsoft owns the platform, not your phones, your network, your handsets, or your porting paperwork. When the office in Henderson, KY, cannot make outbound calls on a Monday morning, the answer is rarely a Microsoft support engineer picking up the line.
That is where IParigon fits in. We are the phone company you can actually get on the phone. Whether your team picks Teams as the calling experience or sticks with our hosted extensions, the support model stays the same: real people in the Midwest, on the line.
For more on this, see why local support beats national providers when your phones are mission critical.
Tips for a Smoother Teams Phone Migration
Patterns we see in the cleanest migrations across Indiana, Kentucky, Ohio, Michigan, and nationwide:
- Audit your current bill first. Most of the savings, and most of the surprise costs, are already on your existing invoice, hiding under fees you have stopped reading.
- Map every user type. A reception phone, a warehouse handset, and a sales rep on the road each need different licensing. Treating them all the same overpays for some and underserves others.
- Test mobile calling early. Teams calling on mobile is solid, but only if your team has the right mobile data, microphone, and headset setup. Pilot a small group first.
- Plan number porting in writing. Porting can take 5 to 15 business days depending on your old carrier. Build that into your cutover date so phones never go dark.
You can also pair Teams calling with a unified mobile and desktop setup, which we covered in Unifying Desktop and Mobile Phones: A Better Way to Keep Your Team Connected.
Honest Thoughts From a Midwest Phone Company
After two decades of moving Midwest businesses on and off different phone platforms, here is the frame we share with prospects: pick the phone experience that fits how your team works, then pick the carrier and support model that protect it.
Teams Phone is a clean interface for companies that already live inside Microsoft Teams every day.
Restaurants in Vincennes, IN, professional services firms in Indianapolis, and clinics across Kentucky run well on it when licensing, carrier, and support are aligned. The reverse order is where trouble shows up: signing up for Teams calling because Teams was already there, then running into the carrier and support gaps after go-live. A good provider says no to the wrong fit before you spend a dollar.
One Interesting Fact About Teams Phone
Microsoft Teams Phone passed 20 million PSTN-connected users in 2024, according to Microsoft’s own reporting. The support footprint in any single region did not grow at the same pace. The platform is national, but your phones are still local. That gap is why a Midwest carrier partner is often the difference between a smooth rollout and a rocky one.
Teams Phone System FAQ
Is Microsoft Teams a phone system on its own?
Not by itself. Teams is the calling app. You still need a Teams Phone license, a calling plan or carrier, and a way to manage numbers, 911, and porting.
Can I keep my business phone number when I switch to Teams?
Yes, almost every U.S. number can be ported into Teams through Direct Routing or Operator Connect. Timing depends on your existing carrier, so start the paperwork early.
Does Teams Phone send and receive text messages?
Not from your main number out of the box. Adding business texting requires a carrier add-on. IParigon offers SMS and MMS as part of our Pro and Premier service plans.
What happens to my desk phones when I switch to Teams?
You can use the Teams desktop and mobile apps as your main calling experience, or pair Teams with compatible IP handsets. IParigon supports both setups.
Is Teams Phone HIPAA compliant for healthcare offices?
Microsoft Teams can be configured for HIPAA workloads when paired with the right Microsoft 365 plan and a Business Associate Agreement. The carrier matters too. For more on this, visit our VoIP for Healthcare page.
Ready to Make Your Teams Phone Switch Easier?
We will review your current bill, walk you through the licensing, and tell you honestly whether Teams Phone is the right call for your business.
Talk to an IParigon team member or try our pricing estimator to see what your monthly cost would look like.
