Kall8 : Blog - Toll Free Numbers to Grow Your Business

Add Calling to Microsoft Teams: A Step-by-Step Guide

Written by Kall8 | Apr 9, 2026 5:56:42 PM

If your business is already paying for a Microsoft 365 subscription, you're sitting on a powerful but underused asset. Many business owners don't realize that the same platform they use for internal collaboration can also replace their entire phone system, often at a lower cost. Instead of paying for a separate VoIP service, you can consolidate your tools and your budget. The process to add calling to Microsoft Teams gives you incredible flexibility, especially with options like Direct Routing that let you choose your own phone service provider (like Kall8!). This article will explain how to turn Teams into a full-featured business phone, giving you more control over your communications and your expenses.

Key Takeaways

  • Get Your Licenses in Order: Before you can call outside numbers, you need the right setup. This means adding a Teams Phone license to your Microsoft 365 Business plan and having admin access to configure your phone settings.
  • Connect Your Own Provider with Direct Routing: For more control and better pricing, use Direct Routing to link your preferred phone service, like Kall8, to Teams. This approach lets you keep your existing numbers and manage calls from a single app, combining the best of both platforms.
  • Automate Your Call Flow: Use advanced features like auto attendants and call queues to manage incoming calls professionally. These tools act as a virtual receptionist, directing callers to the right department and ensuring no one gets a busy signal, which improves your customer experience.

What Do You Need to Start Calling in Microsoft Teams?

Before you can start making and receiving calls in Microsoft Teams, you need to get a few things in order. Think of it as setting the foundation for a more streamlined communication system. Getting these key pieces in place first will ensure a smooth transition. You’ll need to look at your Microsoft subscriptions, confirm you have the right permissions to make changes, and make sure your existing hardware is ready. Let’s walk through each step.

 

Check Your Licenses and Subscriptions

First, you need the right license from Microsoft. To use Teams as your phone system, a basic Microsoft 365 plan isn’t enough. You’ll need a business account, and to add a specific Phone System license. Then you'll need to add a Calling Plan, or use a service like Direct Routing from Kall8. If your business already uses Microsoft 365, adding phone capabilities is a cost-effective way to consolidate your tools. It integrates calls right into the app you use for chats and meetings, building out your business phone services without adding a completely separate system.

 

Confirm Your Admin Permissions

To set up calling in Teams, you need to be an administrator for your organization's Microsoft 365 account. If you set up the account, you likely have these permissions. If not, you’ll need to work with your IT person or the team member who manages your Microsoft account. They have the access required to add licenses and configure the phone system settings. Getting this sorted out early is important because you can’t proceed without admin access. Proper account management is key to making sure your communication tools are set up correctly and securely.

 

Prepare Your Network and Devices

You don’t need fancy equipment to make calls with Teams, but a stable internet connection is a must for clear conversations. For the best audio quality, a headset with a built-in microphone is a great investment, though the microphone and speakers on your computer or smartphone also work. The beauty of using Teams for calls is that it can replace your traditional desk phone, allowing you to take calls from anywhere on devices you already own. This approach is the same as Kall8 VoIP (Voice over Internet Protocol) technology, which sends calls over the internet instead of a traditional phone line.

 

How to Enable Calling in Microsoft Teams

Ready to turn Microsoft Teams into your business phone system? Getting started involves a few key steps within your Teams Admin Center. You’ll need to choose how you connect to the public phone network and then assign numbers to your team. Let’s walk through the process so you can start making and receiving calls directly from Teams. It’s a straightforward path to integrating a full-featured phone into the app you already use every day.

 

Set Up Calling in the Teams Admin Center

Think of the Teams Admin Center as your mission control for all communication settings. Before your team can call external numbers, you need to connect Teams to the Public Switched Telephone Network (PSTN), which is the traditional phone network. Microsoft gives you a few ways to do this, including their own Calling Plans, or connecting through a third-party provider like Kall8.

 

This initial setup is crucial because it lays the groundwork for all your calling features. You're essentially telling Teams that it needs to function as a complete business phone system, not just an internal chat tool. Getting this right from the start makes everything else much smoother.

 

Configure User Settings and Phone Numbers

Once you’ve decided how to connect to the phone network and you have your Microsoft account set up correctly, the next step is getting phone numbers for your employees. Every user who needs to make or receive external calls will need their own number assigned to their Teams account. You have three main options for this: using Microsoft’s Calling Plans, working with an Operator Connect partner, or using Direct Routing to bring in your own provider.

 

This is where you can get new Toll Free or local numbers from Kall8 or use the business numbers you already have. Assigning numbers is straightforward and can be managed for each user right from the admin portal of Kall8, giving you full control over who can call.

 

Connect to the Phone Network with Direct Routing

Direct Routing is a powerful option that gives you the most flexibility and control. It lets you connect Kall8 directly to Microsoft Teams. Think of it as creating a secure, private bridge between the Teams app and your provider’s network. This approach often leads to significant cost savings compared to Microsoft’s own plans. It also allows you to keep your existing business phone numbers, which is a huge plus. With a service like Kall8’s Direct Routing, you can pair our reliable, feature-rich phone service with the collaborative environment of Teams, creating a seamless and professional communication hub for your business.

 

What Kinds of Calls Can You Make in Teams?

Once calling is set up, Microsoft Teams becomes a hub for all your business conversations. It handles much more than internal video chats and messages. Depending on your plan, you can use it as your primary phone system to connect with colleagues, clients, and partners. Let's look at the different types of calls you can make in the Teams app.

 

Call Other Teams Users

The most direct way to use Teams calling is for internal communication. You can start a one-on-one or group call with anyone in your organization who uses Teams. This includes both audio and video, making it perfect for quick check-ins or project discussions without leaving the app. Think of it as your internal office phone network, but with video and screen sharing. It’s a simple way to stay connected with your team, no matter where they are.

 

Call External Phone Numbers

This is where Teams becomes a complete business phone. With a setup like Direct Routing, you can make and receive calls to and from external phone numbers, including landlines and mobile phones. This means you can dial a client or take a customer call directly in the Teams interface. This capability turns Teams into a unified communications tool, centralizing all your conversations. It allows you to use your professional business phone services through the same platform you use for team collaboration.

 

Understand Group Call and Meeting Limits

It's helpful to know the limits for group calls and meetings. For spontaneous calls from a group chat, you can typically include a set number of participants. If you need to connect with a larger group, scheduling a Teams meeting is the way to go, as these can host hundreds of attendees. The exact number depends on your subscription. It's a good idea to check the official limits and specifications for your Microsoft 365 plan to confirm your capabilities for both informal calls and larger meetings.

 

How Emergency Calling Works

Emergency calling in Teams works differently than a traditional phone line. Your ability to call services like 911 depends on how your organization has configured its calling plan. Without a setup that connects Teams to the public phone network, you may not be able to dial external numbers, including emergency services. It is critical to talk to your IT administrator to understand your company’s policy for emergency calling through Teams. Always have a backup plan, like using a mobile phone, for emergencies.

 

How to Make a Call in Microsoft Teams

Once your calling features are active in Microsoft Teams, you’ll find that making calls is woven seamlessly into your daily workflow. This integration is a huge advantage for any business, as it keeps all your communications in one central hub. No more juggling a separate desk phone or a personal cell for business calls. Instead, you can call colleagues, clients, and partners directly from the same application you use for chats, meetings, and file sharing. This streamlined process not only saves time but also helps you maintain a professional image.

 

Microsoft Teams offers several intuitive ways to initiate a call, catering to different preferences and situations. You can instantly turn a text chat into a voice conversation, look up a contact and call them with a single click, or use a traditional dial pad to enter an external phone number. There are even keyboard shortcuts for those who love efficiency. Understanding these options allows you to communicate more effectively and choose the method that best suits the moment. In the following sections, we'll explore each of these methods step-by-step, so you can start making calls with confidence and ease. We'll also cover how to manage your call settings to ensure you never miss an important message.

 

Call from a Chat or Profile

The quickest way to start a call is often from a conversation you’re already having. If you're in a one-on-one or group chat, you can instantly switch to a voice or video call. Just look for the audio and video call icons in the top-right corner of the chat window. Clicking the phone icon starts an audio call, while the camera icon initiates a video call. This is perfect for when a quick text exchange turns into a more detailed discussion that’s better handled by talking. You can also start a call directly from someone’s profile card by hovering over their picture anywhere in Teams and selecting the phone icon.

 

Use the Dial Pad and Contacts List

For calling external numbers, like a client’s landline or a vendor’s mobile, the dial pad is your go-to tool. You can find it by navigating to the Calls tab on the left-hand side of the Teams app. Just type in the number and hit Call. Remember, calling external phone numbers requires a calling plan or a business phone service connected through Direct Routing. You can also use the Calls tab to access your contacts list. From there, you can find the person you want to reach and select the phone icon next to their name to start the call. This keeps all your important numbers organized and easily accessible.

 

Start a Call with a Search Command

If you prefer using keyboard shortcuts to speed up your workflow, you’ll love this trick. You can start a call from anywhere in Teams using the search bar at the very top of the screen. Simply type /call into the search bar, press space, and then start typing the name or number of the person you want to contact. As you type, Teams will suggest matching contacts. Select the right person from the list and press Enter to immediately start the call. This command is a fantastic time-saver, letting you connect with someone without ever having to leave what you’re working on to go to the Calls tab.

 

Manage Your Voicemail and Call Forwarding

A professional phone setup isn't just about making calls; it's also about managing them effectively. Teams gives you full control over your call-handling rules. To access these settings, click on your profile picture at the top right, select Settings, and then go to the Calls section. Here, you can set up call forwarding to another person or number if you don't answer. You can also configure how your calls ring on other devices and record a custom voicemail greeting. Taking a few minutes to customize these options ensures you present a polished image and never miss an important call. Many of these are included features that make your system more powerful.

 

Within the Kall8 portal, you can also manage call settings for all your Teams Direct users.

 

Teams Calling Not Working? Try These Fixes

It’s frustrating when a tool you rely on suddenly stops working, especially when it’s your phone system. If you’re having trouble making or receiving calls in Microsoft Teams, don’t worry. The fix is often simpler than you think. Before you spend hours on a support call, walk through these common troubleshooting steps to see if you can get back up and running quickly. Most issues come down to a few key areas: permissions, settings, or software glitches. Let's start with the basics and work our way through the most likely culprits.

 

 

If You Just Signed Up

If you have just signed up for Microsoft Teams Direct Routing through a 3rd party service like Kall8, it can take up to 24 hours to be verified by Microsoft and updated on your account records. You can check the status of your service inside the Kall8 portal.

 

Once you are connected, you will want to restart Teams on all your devices.

 

Check Your License and Subscription

If your dial pad has disappeared or you can’t call external numbers, the first thing to check is your Microsoft 365 license. To use Teams as a phone replacement, you need the right licenses and calling plans from Microsoft. The standard Microsoft 365 subscription doesn't automatically include the ability to call traditional phone numbers. You’ll need an add-on like the Teams Phone Standard license. If your license is correct, confirm your calling plan is active. For more flexibility and often better rates, many businesses use a third-party provider for their phone connection. This approach, known as Direct Routing, connects Teams to an external phone service for more control over your calling.

 

Verify Network and Audio Settings

Sometimes the problem isn’t with Teams itself, but with your connection or hardware. A poor internet connection can lead to dropped calls, robotic voices, and delays. Run a quick speed test to ensure your network is stable.

 

Next, check your audio settings within Teams. Go to Settings > Devices and make sure the correct microphone and speakers are selected. It’s easy for your computer to default to a different device, especially if you use multiple peripherals like a headset and external webcam. Making a free test call from this menu is a great way to confirm everything is working as it should before you dial a client.

 

Update the Teams App and Clear the Cache

Like any software, Teams works best when it’s up to date. Microsoft regularly releases updates that patch bugs and improve performance. Check for updates by clicking the three dots next to your profile picture and selecting "Check for updates." If you’re already on the latest version, the next step is to clear the application cache. Over time, the cache can become cluttered with old files that cause glitches. To clear it, you’ll need to fully quit Teams (right-click the icon in your system tray and select Quit) and then delete the files in the Teams cache folder on your computer. A quick search online will show you exactly where to find it for your operating system.

 

Review Common Calling Errors

If you’ve tried the steps above and are still seeing error messages, it’s time to look at the calling connection itself. Issues with connecting to the Public Switched Telephone Network (PSTN) can be complex. This is where using a dedicated business VoIP provider can make a huge difference. Instead of relying entirely on Microsoft’s ecosystem, Direct Routing gives you a more robust and manageable connection. This setup can help you sidestep common platform-related errors and gives you access to expert support focused specifically on voice services. It also provides greater control over your phone numbers and call routing, which is essential for any growing business.

 

Advanced Calling Features for Your Business

Once you have the basics of Teams calling in place, you can start exploring features that will make your business communications more professional and efficient. Think of these tools as your way to create a polished, enterprise-level phone experience for your customers, even if you’re a team of one. These advanced options help you manage incoming calls smoothly, integrate your existing phone services, and keep your communication costs under control. By taking advantage of these capabilities, you can ensure you never miss an important call and that every customer interaction reinforces your company’s credibility.

 

Many of these powerful tools are designed to automate call handling and streamline your workflows. This means you can spend less time directing calls and more time focusing on growing your business. Whether you want to set up a virtual receptionist or connect your trusted phone provider directly into Teams, there are flexible solutions available. Let’s look at a few of the most impactful features you can implement.

 

Set Up Call Queues and Auto Attendants

An auto attendant acts as a virtual receptionist, greeting callers with a custom message and providing them with a menu of options. For example, you could set it up to say, “Press 1 for sales, Press 2 for support.” This immediately directs callers to the right person or department without any manual work.

 

A call queue is what happens after that choice is made. It places callers in a line and plays music or messages on hold until someone is available to answer. This system is fantastic for managing call volume and improving the customer experience. Instead of hearing a busy signal or going straight to voicemail, your customers know they’re in the right place and that their call will be answered shortly.

 

Integrate Your Phone System with Direct Routing

If you already have a phone service provider like Kall8, you don’t have to give it up to use Teams for calling. Direct Routing is a feature that lets you connect your existing Kall8 platform directly to Teams. This essentially turns Teams into a complete cloud phone solution, allowing you to make and receive external calls from any device that has the Teams app.

 

This integration gives you the best of both worlds: the collaborative power of Microsoft Teams and the reliable, feature-rich service of Kall8. With Kall8’s business phone services, you can use Direct Routing to keep your existing Toll Free or local numbers while managing all your calls within the familiar Teams interface. It’s a flexible and powerful way to unify your communications.

 

Choose the Right Calling Solution for Your Budget

For any business, the bottom line matters. When adding calling to Teams, you have a couple of paths, and the right one depends on your needs and budget. Microsoft offers its own Calling Plans, which are a straightforward way to get started. However, for many businesses, especially those looking for more flexibility and competitive pricing, Direct Routing is often the more cost-effective choice.

 

Using Direct Routing with a provider like Kall8 allows you to find a plan that fits your specific call volume and feature requirements. You can often find more favorable rates for minutes and access a wider range of number types, including vanity and Toll Free numbers. If your organization is already using Microsoft 365, leveraging Direct Routing is an excellent way to create a modern, unified communication system without overspending.

 

 

Frequently Asked Questions

What's the real difference between using Microsoft's Calling Plans and Direct Routing? Think of it this way: Microsoft's Calling Plans are like getting your phone service directly from Microsoft. It's a straightforward, all-in-one option. Direct Routing, on the other hand, lets you connect your preferred phone service provider (like Kall8) to Teams. This approach usually gives you more flexibility, better call rates, and access to specialized features that a dedicated voice provider can offer.

 

Can I use my existing business phone number with Microsoft Teams? Yes, you can, and you should. Keeping your established business number is crucial for continuity. When you use a service like Direct Routing, you can bring your current local or Toll Free numbers with you. This means your customers can keep calling the number they already know, and you won't have to update your marketing materials.

 

Do I need to get special desk phones to use Teams for calls? Not at all. One of the biggest benefits of using Teams for your business phone is that you don't need any special hardware. You can make and receive calls directly from the Teams application on your computer, tablet, or smartphone using a simple headset or even your device's built-in microphone and speakers.

 

Why can't I call external phone numbers from Teams right now? The basic version of Teams is set up for internal calls to other people within your organization. To call external numbers, like a client's landline or a vendor's mobile phone, you need to add a specific Phone System license to your Microsoft 365 account and connect Teams to the public phone network.

 

What is an auto attendant, and how can it help my small business? An auto attendant is essentially a virtual receptionist that greets callers with a custom message and provides a menu of options. For example, it might say, "Thank you for calling. Press 1 for sales, press 2 for support." This feature helps direct callers to the right person quickly and gives your business a very professional and polished image, no matter its size.