Best Business Phone Systems for Microsoft 365

Find and compare the best Business Phone Systems for Microsoft 365 in 2025

Use the comparison tool below to compare the top Business Phone Systems for Microsoft 365 on the market. You can filter results by user reviews, pricing, features, platform, region, support options, integrations, and more.

  • 1
    3CX Reviews
    Top Pick

    3CX

    Free for up to 10 users
    1,089 Ratings
    See Software
    Learn More
    3CX is an open-standards, software-based IP PBX that provides complete Unified Communications right out of the box. 3CX is suitable for all industries and sizes. It can provide everything you need, from mobility and status to advanced call center features and more, at a fraction the cost. 3CX is ideal for remote companies and includes mobile apps, video conference, and website live chat. The installation, management, and maintenance of the PBX are so simple that you can easily manage it yourself, on your own appliance, server, or on a cloud-based platform. You can also choose to have it hosted on 3CX for an easy solution.
  • 2
    VoIPco Telecom Reviews

    VoIPco Telecom

    VoIPco Telecom

    $12.99 per month
    5 Ratings
    VoIPco offers a wide variety of services and a rich selection of features to enhance your business's telecom experience. VoIPco allows businesses to upgrade their business phone system and achieve a Return on Investment in 6-12 months. You can access your telecom services from any device on your IT network, including desktop phones, mobile phones, and computers. Unified Communications (UC), is the seamless integration voice, video, chat and contact center/IVR apps. This technology can dramatically improve your communication and business productivity. Our software and services allow you to access your account, and seamlessly integrate our high-value cloud communications services.
  • 3
    GoTo Connect Reviews
    Top Pick
    GoTo Connect gives your business a professional boost. GoTo Connect is a cloud-based, feature-rich, business phone system that helps thousands of companies in all industries and sizes to improve their communications and achieve greater success. GoTo Connect Hosted VoIP provides a wide range of features that can replace legacy landline phones such as unlimited voicemail boxes and auto attendants.
  • 4
    Zoom Phone Reviews
    Top Pick

    Zoom Phone

    Zoom Communications

    $14.99 per user per month
    22 Ratings
    The cloud phone solution is natively designed for the Zoom platform. Modern user interface and enterprise-class features to simplify voice communications. Zoom administrator portal allows you to manage and provision users, as well as monitor call quality and usage. Globally distributed Zoom cloud platform provides secure HD Voice with enterprise-class reliability. You can easily make and receive calls, share content and participate in video meetings. You can also send chat messages using Zoom desktop or mobile apps. You can easily elevate phone calls to Zoom Meetings without having to ask participants to hang up or dial in to a separate conference bridge. Native apps for Windows, MacOS and Android are easy to use and maximize voice and video quality. There is an ever-growing number of countries that provide local phone numbers. Customers who want to simplify global telephony carrier management can port numbers to Zoom.
  • 5
    Yay Reviews

    Yay

    Yay.com

    $6.99 per user per month
    Built for both large organisations and growing businesses, the Yay.com business phone system offers a versatile and dynamic communication solution that both reduces costs and increases business flexibility. With softphone apps that work with the devices you already use, remote and hybrid working is seamless. Collaborate and connect from any location around the world and work the way you want to. Yay provides a platform for distributed workforces in the office, at home or on the go. Benefit from a host of business features including CRM integrations, IVR call menus, call queueing and more. Get started with a free trial and see how we can help your business thrive today.
  • 6
    Fusion Connect Reviews

    Fusion Connect

    Fusion Connect

    $19.95/month/user
    One call can connect your entire business. Fusion Connect is your Managed Services Provider, providing business internet solutions for your SDWAN, business VoIP (UCaaS), internet accessibility, secure networking, and other requirements. Fusion Connect's Business VoIP includes Internet-based faxing and softphones. Compatible with Windows and Mac as well as other devices.
  • 7
    Dialpad Ai Voice Reviews

    Dialpad Ai Voice

    Dialpad

    $15.00 per user per month
    A business phone system that works as it should. Your business phone system should not be a barrier to work. You can now empower remote workers with one place for business conversations regardless of where they are located. Your business phone system can now go wherever you go with mobile apps that feel like you're working from HQ. With native Ai insights, you can understand why and what was said to your business by looking at the caller information. A web portal allows you to add users, swap numbers, or create ring groups. It also allows you to make changes in real time. You can keep your numbers tied to your business, even if you switch voice providers, local, toll-free or international. Native integrations for G Suite and Zendesk give context to your conversations. Do you need to send a quick message to a prospect? You can choose from MMS, SMS, or group chat. Voice Intelligence allows you to focus on your conversation and not take notes.
  • 8
    FluentStream Reviews

    FluentStream

    FluentStream

    $20.00/month/user
    Are you looking for a business phone system that is affordable and reliable? It would be great to spend more time with your customers than waiting on hold with your provider every little change. FluentStream is your home! FluentStream is committed to being the best business communication system. No-contract plans are available for all accounts. We provide 24/7 client support. We will be there for you throughout the onboarding process. We understand how difficult phone setup can be. We're happy to take over the heavy lifting so that you don't have too. It's all part and parcel of being the easiest business to work with.
  • 9
    Adversus Dialer Reviews

    Adversus Dialer

    Adversus

    $150 per user per month
    Adversus is an outbound calling solution that can help you streamline your call strategies and automate manual processes. It also provides valuable insights that will help you improve your outbound workflows. Adversus was founded in 2015 by our founders after they were frustrated with the lack of flexibility in the solution that they had been using. Our goal was to create an outbound solution that would change how the game works. We offer a solution that allows for flexibility and customization in every aspect of the workflow. Adversus's primary goal is to provide a future-proof solution that never fails. We don't just want to be able to adapt to the market, but rather push the boundaries of what's possible. Businesses in many industries use Adversus to improve their outbound calling efficiency. There are many sizes available.
  • 10
    CoreInteract by Altigen Reviews

    CoreInteract by Altigen

    Altigen Communications, Inc.

    $15/mo/user
    Engage customers throughout the entire journey via voice and digital channels (chats, email SMS, email and social media). Integrate business communications with business system, giving valuable information to employees at every customer touchpoint. CoreInteract's drag-and-drop design makes it easy to manage workgroups and routing rules that meet your business needs. You can set the priority and order of which workgroups will receive customer inquiries. CoreInteract lets you manage your interactions in Teams natively without the need for a separate desktop software or application. Your team members can easily distinguish between customer calls and internal calls by clearly marking workgroup calls. CoreInteract can retrieve a Dynamics 365 customer record for each answered call. This gives you more control over your customer information and allows you to call a customer directly within Dynamics 365.
  • 11
    UniVoIP Reviews
    UniVoIP's innovative software and solutions drive productivity, efficiency, and performance while embracing and surpassing today's most challenging business communication trends. OfficeConnect™ is the principal product. It delivers 500+ PBX, Omnichannel Contact Center, and Unified Communication features via private or public networking options in a multiinstance infrastructure. UniVoIP also offers UniBridge which is a powerful, high-definition audio, video, and web conferencing solution, screen sharing sharing and meeting logs. It offers summaries, timestamps and summaries and no software download.
  • 12
    CallHarbor Reviews

    CallHarbor

    CallHarbor

    $18/month/user
    CallHarbor offers UCaaS systems for small and medium-sized businesses. Our platform gives you statistics about your employees, integrates to your existing applications, allows you to access full functionality even if you are not in the office. We do more than just make outgoing calls. CallHarbor works with companies in many industries and provides industry-leading systems to improve communication workflow. CallHarbor offers top mobile and web apps that allow you to work from anywhere. We have everything you need, from making calls on your desktop to checking your voicemail in an email, to calling your friends from your mobile device. CallHarbor doesn't limit the number of Queues or Auto-Attendants, Parking Lots or Users that your system can have. This allows you to grow small and start big. We are there for you every step of your journey. You don't need to worry about dropped calls because we have reliable geo-redundant servers. We offer 25+ world-class features as part of your original plan and one flat rate.
  • 13
    8x8 Express Reviews

    8x8 Express

    8x8

    $12 per user per month
    For only $12/month, get a complete small business phone system. From the moment a customer contacts your company, success begins. Impress customers with 8x8 Express, an easy-to-use business phone system that takes only minutes to set up. Express costs only $12 per month and includes phone, video, texting, chat, and video meetings. You get the same communication tools as large corporations. Port your existing number or create a new business number. Engage customers and employees with high-definition (HD), audio & video conference and team messaging. Unlimited calling to the U.S. & Canada Call handling: call forwarding, music on hold and call handling HD voice and video calls. SMS and texting for business. One-on-one or group chat. Express is available immediately after you activate your account. You can add users or modify settings whenever you want. It's great for small businesses that have only one location and home-based businesses.
  • 14
    Voxloud Reviews

    Voxloud

    Voxloud

    $31 per month
    Voxloud, the first cloud-based telephone system in Italy, integrates AI to increase productivity and to save you time. Bring your existing landline number with you to Voxloud. Your customers will be familiar with it. You won't pay a cent. You can activate your new landline and phone system within 59 seconds. This will allow you to communicate professionally right away. Voxloud’s cloud-based phone system allows you to ditch your old phone system and work smarter. All your communications can be handled by one telephone system. Designed specifically for small and medium sized businesses. Interactive voice response systems (IVRs) with one or more levels can help you connect incoming calls faster to the correct person. Our apps and VoIP phones allow you to work anywhere, at any time, on your laptop, smartphone, tablet or tablet. With just a few mouse clicks, you can add users to your phone system in any location. Add context to phone conversations using the most popular CRM integrations available.
  • 15
    NetFortris Comm-unity Reviews

    NetFortris Comm-unity

    NetFortris

    $19.99/month/user
    Unify Your Communications! All your communications are in one place! You can chat, text, fax and conference as well as call, chat, text, conference, collaborate, and more. NetFortris Community unifies all communication -- voice, video and messaging, collaboration, conferencing and meetings, as well as call center -- in one platform that is easy to use. We also put it in the Cloud so your team can collaborate on any device, from anywhere, whether they are at work, home, or on the move. NetFortris Community is built to meet your business communication needs today and tomorrow. Comm-unity is easy to scale as your business grows. It always works when you need and gives your team the most recent functionality. Having all communication channels in one place will streamline teamwork and increase productivity. Comm-unity is available to your team from any internet-enabled device. You can work at home or on the move. Comm-unity grows with your business, whether you add hundreds or one user.
  • 16
    Avaya Cloud Office Reviews

    Avaya Cloud Office

    Avaya

    $19.99 per user/per month
    Avaya Cloud Office from RingCentral is a cloud-based phone system that works wherever and whenever you need it. Everything you need will be at your fingertips, no matter where you are. It simplifies the way your company communicates. No matter where your employees may be, you can call, chat, meet, or collaborate. File sharing, task management and virtual team rooms help you stay on track and on time. To create a truly cloud-unified communications experience, you can combine 100+ business integrations like Salesforce and Google Drive. Avaya Cloud Office offers your customers and employees the features and options they want in one app.
  • 17
    Telavox Reviews
    Collaborate with colleagues. Engage customers. Any channel. Any device. Anywhere. All your communications needs are met with one platform: telephony, PBX messaging, meetings and contact center. Engage with customers and colleagues. The right tools will empower your workforce. One app for customer engagement and collaboration with colleagues. Agents can work remotely and still provide excellent customer service. One app allows you to call, message and meet with your team. You can collaborate in real time, so you can avoid distractions. Smart features can be used to notify colleagues when you are available and when you aren't. Stay connected, stay productive. Fixed and mobile telephony and PBX. All your voice communication needs are covered in one place. Any device, any platform. No matter where a call is made, whether it's over cellular, PSTN, or the internet; the experience and features will be the same.
  • 18
    AT&T Office@Hand Reviews

    AT&T Office@Hand

    AT&T

    $25.40 per month
    Flexible cloud-based solution that allows voice, text, fax, and audio conferencing. This allows workers to be more productive at work or on the road. Employees can work from anywhere, including smartphones, tablets, softphones, desktop IP phones, or desktops. This will allow them to be more productive and increase their ability to communicate with customers. To ensure that your customers can reach you, use one number. You can leverage instant local numbers, toll free access, internetfax, and time-of-day service. One solution provides video meetings and online collaboration. Cloud-based services are free from maintenance, software setup, support fees, and CapEx. A cloud-based service allows you to spend more time helping customers and less managing communications. You can get up to three company numbers for your business: a local primary number, a toll free number, and a number for faxes.
  • 19
    VL Telecom Reviews

    VL Telecom

    VL Telecom

    $30.94 per month
    We are a client-centric organization and put our clients at the center of everything we do. We are constantly innovating to bring you solutions that will improve your business. This will continue for many years. We have the solution for you, no matter if you are a small business or a large corporation. You can update your HostedPBX in the cloud from anywhere you are, and see your changes being applied in real-time. Every Virtual Landlines account comes with our BusinessTalk app. BusinessTalk allows you to quickly and easily communicate with clients, co-workers, and other users. Our platform integrates all functions into one, simple-to-use GUI. In minutes, you can start training campaigns or simulated attacks. You can customize your templates, landing pages, and simulated attachments. You can also spoof your domain to simulate CEO Fraud attacks with reply track.
  • 20
    BroadConnect Reviews

    BroadConnect

    BroadConnect

    $180 per month
    Our experts will tailor your BroadConnect VoIP service with hardware and support to ensure your office phone system is at its best. BroadConnect Canada is a leader in the service of the business community. We have a national presence and dedicated lines to meet all your IP telephony communication requirements with our commercial telephone systems for businesses. Unified communications combined with collaboration applications such as file-sharing or video conferencing create a dynamic work environment. Our extensive range of advanced phone features, delivered over our reliable, global IP network, will ensure that you have crystal-clear calls, flexibility, and system scaling. We will manage your VoIP business phone service and keep your office phone system current with the latest technology upgrades. We offer a state of the art unified communications service that allows multiple points of access to all permitted resources.
  • 21
    Gradwell Wave Reviews

    Gradwell Wave

    Gradwell

    $9.03 per month
    Meet Wave, our intuitive, affordable cloud phone system. Wave is a UK-based cloud phone system that allows you and your colleagues to work from anywhere. Our all-in-one control panel makes it easy to manage and configure. Easy onboarding and quick configuration make it easy to set up your account. You can access your account from any device, anywhere in this world. Wave is packed with tons of useful features that will make your business run more smoothly. Wave has these key features that allow businesses to manage their telephony remotely. Wave will help you solve problems faster, communicate more effectively, and enjoy collaboration like never before. Wave helps you reduce costs, save time and seamlessly integrate remote and hybrid work into your business. We want our customers' success. Minute bundles for landline and mobile-compatible phones. Access to all call management and administration features.
  • 22
    Evolve IP Reviews
    You can unleash the potential of your workforce using best-of-breed collaboration tools from Microsoft and Cisco, which are directly integrated with Evolve IP's highly-rated enterprise voice and communications services. We will create a PurposeBuilt®, tailored to your business, which will significantly increase employee productivity and improve organizational efficiency. Evolve IP Desktop Services (DaaS, RMM, ITaaS, and many more) allow employees to work from anywhere and enable IT departments to manage, protect, and update all of their associates' devices. Evolve IP's omnichannel contact center solution has been praised by analysts. Our integrated communications and contact centre platform has been named to Gartner's CCaaS Magic Quadrant for three consecutive years. It also has the highest client recommendation rating among all providers. This will make it Purpose-Built®.
  • 23
    Allworx Verge Reviews
    You can talk at work or on the move with a Verge IP phone at your desk and the Allworx Touch™ app on any of your mobile devices. You can talk without missing a beat. Real-time sharing between mobile devices (via Reach), Outlook, and Verge IP phones. Instant handoff of active calls from your mobile device to Verge IP phone (via reach). Remote control of Verge IP phones using your mobile device (via Reach). We believe that your business phone should be used the way you want it to. You can personalize your phone using the Programmable Function Buttons. You can speed dial your personal contacts and colleagues from the corporate directory. You can view the presence setting of your colleagues and their current status (active call/active ringing/do not disturb) in the Allworx network. Call center agents use this feature to receive calls into their ACD queues.
  • 24
    Microsoft Teams Phone Reviews
    Teams Phone allows you to stay connected via voice and video calling from your computer, tablet or mobile device. You can make and receive voice and video phone calls in Teams. Stay connected and do more from anywhere. An all-in-one app allows you to connect with people, chat, and collaborate. You can use integrated partner software solutions and innovative built-in AI-powered calling experiences. Flexible financing options are available and you can choose from a variety of devices to suit your business needs. The Teams admin center allows you to easily add, monitor and manage voice and/or video calling. Get the most out of your business voice and video calling. An all-in-one app allows you to connect with colleagues, chat, and make calls. With Teams, you can make and receive audio and video phone calls over the internet. Keep in touch, and do more no matter where you may be.
  • 25
    BluIP Reviews
    We offer a cutting-edge, customizable Cloud UC (unified communication) service. It is built with reliable, carrier grade network hardware and software from the best-of-breed companies like BroadSoft, IBM, Cisco, and ACME Packet. All deployed as a geo redundant solution. Our client is device-agnostic and integrates seamlessly with the most popular productivity tools such as G-Suite and Office 365. Dialer presents relevant caller data and interactions, allowing for more personal and satisfying calls. BluIP is a Tier1 provider and integrator. We also develop customized applications, Cloud Communications, Contact Center, and Cloud Communications. We have a strong development culture and integration abilities, which ensures that we deliver the desired outcomes with white-glove support and implementation to customers with complex or standard requirements.
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