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
    1,121 Ratings
    See Software
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    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
    Infinite Connect Reviews

    Infinite Connect

    Infinite Connect

    $22.50 per month
    All your business operations can be managed remotely from one platform. You can improve productivity and simplify communications with reliable voice and video, fax, messaging, conferencing, and fax in the cloud. Flexible, unified cloud communications and contact centre services for small and medium-sized businesses. You can customize your settings and capabilities to make your conference calls work as you wish. You can have up to 100 people on your conference call. Our VoIP phone system or hosted PBX replaces your traditional small business phone system. It uses your broadband connection to make communication easier. You can easily share your desktop and broadcast HD video to any size meeting, large or small, as well as teleconferencing. No downloads required. You can send and receive SMS and MMS text messages online. You can also manage internet faxing right from your dashboard. Infinite offers the most current VoIP phones that are fully configured and ready to use. You just need to turn on your phone and get started talking.
  • 3
    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.
  • 4
    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.
  • 5
    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.
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    Adversus Dialer Reviews

    Adversus Dialer

    Adversus

    $150 per user per month
    Adversus serves as an outbound dialing solution designed to enhance your calling strategies, automate tedious tasks, and deliver essential insights for optimizing outbound workflows and overall efficiency. Founded in 2015, Adversus emerged from the founders' frustrations with the rigidity of their previous solution, igniting a vision to create a transformative outbound tool. We prioritize user-driven innovation, recognizing that each user possesses unique needs and expectations. Our platform offers extensive flexibility and customization across all workflow elements, ensuring that our users can tailor their experience to meet specific requirements. At Adversus, we strive to develop a forward-thinking solution that remains relevant and cutting-edge, aiming not just to respond to market changes, but to redefine what is achievable within the industry. Businesses across various sectors utilize Adversus to enhance their outbound calling activities, with user bases that can range from a single user to several hundred, all united by the goal of increased efficiency. Ultimately, our commitment to innovation and user satisfaction sets us apart in the competitive landscape of outbound dialing solutions.
  • 7
    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.
  • 8
    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.
  • 9
    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.
  • 10
    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.
  • 11
    8x8 Express Reviews

    8x8 Express

    8x8

    $12 per user per month
    Transform your communication with a complete business phone system for just $12 a month. The journey to success begins the moment a customer reaches out to you, and with 8x8 Express, you can make a lasting impression right from the start. This robust phone system is easy to set up in only minutes and includes essential features like voice calls, video conferencing, texting, and chat, all for an affordable monthly fee. Gain access to the same advanced communication tools that large enterprises use, whether you’re creating a new business phone number or porting your current one. Enjoy high-definition audio and video conferencing, along with team messaging to connect with customers and employees effectively. With unlimited calling across the U.S. and Canada and features like call forwarding and music on hold, you can ensure seamless communication. In addition to HD voice and video calls, you’ll have the capability for business SMS and texting, as well as one-on-one and group chat options. Express is ready for use immediately upon account activation, and you can effortlessly add users and modify settings as needed, making it an ideal solution for both home-based businesses and small enterprises operating from a single location. This service will not only enhance your communication strategies but also empower your business to thrive in a competitive environment.
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    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.
  • 13
    Voxloud Reviews

    Voxloud

    Voxloud

    $31 per month
    Voxloud stands out as Italy's pioneering cloud-based phone system that seamlessly incorporates AI to enhance productivity and save valuable time. You can retain your existing landline number when transitioning to Voxloud at no additional cost to you. With a simple activation process, you can set up your new landline number and phone system in just 59 seconds, allowing you to start communicating professionally from the very first day. Say farewell to traditional phone systems and embrace a smarter way of working with Voxloud's innovative cloud phone solution. This single telephone system encompasses all your communication needs, specially tailored for small and medium-sized businesses. Enhance the efficiency of your incoming calls by utilizing an interactive voice response (IVR) system that can be configured with multiple levels. Work flexibly from anywhere and at any time on your laptop, tablet, or smartphone through our user-friendly apps and VoIP devices. Easily add users from various locations and adjust your phone system’s settings with just a few clicks, ensuring that it meets your evolving business requirements. Furthermore, enrich your phone conversations with the most renowned CRM integrations available in the market, providing a comprehensive solution for your communication needs. As a result, Voxloud enables your team to collaborate effectively, no matter where they are.
  • 14
    UniVoIP Reviews
    UniVoIP's innovative software and solutions drive productivity, efficiency, and performance while embracing and surpassing today's most challenging business communication trends. OfficeConnectâ„¢ 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.
  • 15
    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.
  • 16
    Avaya Cloud Office Reviews

    Avaya Cloud Office

    Avaya

    $19.99/user/month
    Avaya Cloud Office is a comprehensive cloud-based communication platform that integrates voice, video, messaging, meetings, and collaboration tools into one cohesive system. It effectively links office-based, remote, and mobile employees across various devices, enabling uninterrupted and uniform communication. With functionalities such as business phone numbers, voicemail transcription, team messaging, and document sharing, it significantly boosts productivity and teamwork. The platform also places a strong emphasis on security through encryption and connects with more than 100 business applications, like Salesforce, Office 365, and G Suite, which assists companies in optimizing their workflows and enhancing overall efficiency. This all-in-one solution is designed to adapt to the evolving needs of modern businesses.
  • 17
    Telavox Reviews
    Work together with your team and connect with clients seamlessly. Utilize any communication method across various devices, no matter your location. With a unified platform for telephony, PBX, messaging, meetings, and contact center functionalities, you can easily engage with both customers and colleagues. Equip your employees with the necessary tools to enhance their productivity. This single application facilitates customer interactions and team collaboration effortlessly. Agents can work from anywhere while still delivering exceptional service to clients. Streamline your tasks with one comprehensive app for calling, messaging, and virtual meetings, allowing for real-time collaboration without interruptions. Implement intelligent features to communicate your availability effectively to your peers. Maintain strong connections and boost productivity with ease. Enjoy a complete suite of voice communication solutions, including fixed and mobile telephony alongside PBX, all centralized in one location. Regardless of the device or platform used, the calling experience remains consistent whether it’s via cellular, PSTN, or the internet, ensuring smooth and reliable communication. The ability to connect seamlessly enhances both individual and team performance, creating a more efficient working environment.
  • 18
    AT&T Office@Hand Reviews

    AT&T Office@Hand

    AT&T

    $25.40 per month
    An adaptable cloud solution offers voice, fax, text messaging, and audio and video conferencing capabilities, enabling employees to enhance productivity whether in the office or away. Workers can connect seamlessly from smartphones, tablets, softphones, or desktop IP phones, improving their interaction with clients. Use a single number to direct incoming calls to the appropriate staff member, ensuring customers can always reach you efficiently. Access instant local numbers, toll-free options, internet faxing, and time-sensitive services. Benefit from a unified platform that facilitates video meetings and online teamwork, streamlining communication. By opting for a cloud-based service, businesses can eliminate the costs associated with maintenance, software, setup, and support, along with capital expenditures. Experience a user-friendly system for phone, fax, messaging, and conferencing, allowing you to focus more on customer service and less on managing communication tools. Additionally, your business can acquire up to three company numbers: a primary local number, a toll-free number, and a dedicated local number for fax communications, thus optimizing your connectivity options. This comprehensive approach ensures that your communication needs are met efficiently and effectively.
  • 19
    VL Telecom Reviews

    VL Telecom

    VL Telecom

    $30.94 per month
    We prioritize our clients and ensure they are at the forefront of everything we undertake as a client-focused organization. Our commitment to continuous innovation allows us to provide solutions that not only enhance your business now but will also support its growth for years ahead. Regardless of whether you are a fledgling small business or a large multinational corporation, we have tailored solutions for you. You can easily update your Hosted PBX in the Cloud from any location and observe the changes implemented in real time. Each Virtual Landlines Account includes our BusinessTalk App, which enables seamless communication with colleagues, clients, and others. Our platform unifies all functionalities into a user-friendly interface, making it simple to initiate training campaigns and conduct simulated attacks within minutes. You have the flexibility to fully customize your templates, landing pages, and simulated attachments, and even spoof your own domain to execute simulated CEO Fraud attacks, complete with reply tracking to monitor engagement. In this way, we empower your organization to effectively safeguard against potential threats while enhancing overall efficiency.
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    BroadConnect Reviews

    BroadConnect

    BroadConnect

    $180 per month
    Our skilled team will tailor your BroadConnect VoIP service, equipping your office with the necessary hardware and support to elevate your phone system to its fullest potential. BroadConnect Canada is committed to serving the entire business sector, boasting a national presence and dedicated lines that cater to all your IP telephony requirements through our commercial phone systems. By integrating unified communications with collaboration tools like video conferencing and file-sharing, we foster a dynamic work atmosphere. We guarantee exceptional call quality, adaptability, and system scalability, all made possible through our robust and global IP network featuring a wide range of advanced phone functionalities. Our team will oversee every facet of your VoIP business phone service, ensuring your office phone system remains updated with the latest technological advancements. Furthermore, we offer a cutting-edge unified communications service that provides multiple access points to authorized resources, ensuring seamless connectivity for your business operations. With our focus on innovation and customer satisfaction, we aim to enhance your overall communication experience.
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    Gradwell Wave Reviews

    Gradwell Wave

    Gradwell

    $9.03 per month
    Introducing our budget-friendly, robust, and user-friendly cloud phone system. Crafted in the UK, Wave empowers you and your team to work from any location. Managing and setting it up is a breeze with our comprehensive control panel. You can be operational in just a few hours thanks to our straightforward onboarding process and rapid configuration. Access the system from any device, no matter where you are in the world, and enjoy an array of valuable features designed to elevate your business. Wave is tailored for the modern workforce, simplifying the way you conduct business. Our platform includes essential tools that enable companies to manage their telephony from a distance effectively. With Wave, you can tackle challenges more swiftly, communicate seamlessly, and enhance collaboration in unprecedented ways. The Wave solution is designed to help you cut expenses, save valuable time, and effortlessly incorporate hybrid and remote work models into your organization. We are committed to your success, offering both landline and mobile-compatible minute bundles along with full access to all call management and administrative capabilities. Our goal is to ensure you have everything you need to thrive in today’s dynamic work environment.
  • 22
    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.
  • 23
    Allworx Verge Reviews
    With a Verge IP phone positioned on your desk and the Allworx Reach™ app installed on your preferred mobile devices, you have the flexibility to communicate seamlessly whether you're in the office or out and about. You’ll stay connected without interruption, thanks to the real-time synchronization of contacts across your mobile devices (via Reach), Outlook (through Interact Professional), and the Verge IP phone itself. The ability to instantly transfer ongoing calls between your mobile device and Verge IP phone (via Reach) enhances your communication experience. Additionally, you can remotely operate your Verge IP phone using your mobile device through Reach, ensuring convenience and efficiency. We are committed to allowing your business phone to function according to your personal preferences; the Programmable Function Buttons enable you to tailor your phone to suit your individual needs. You can speed dial your most important contacts or colleagues listed in the corporate directory. For those colleagues who are also part of the Allworx system, you will have visibility into their presence settings and real-time call statuses, which indicate if they are on an active call, ringing, or set to do not disturb. This system is particularly beneficial for call center agents, as it allows them to efficiently receive incoming calls directed to their designated ACD queues, thereby streamlining the communication process and improving overall productivity. In this way, the combination of these tools fosters a more dynamic and responsive work environment.
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    Microsoft Teams Phone Reviews
    Stay connected through voice and video calls using Teams Phone across your computer, tablet, mobile device, or desk phone. You can easily initiate and receive both voice and video calls directly within Teams, ensuring you remain in touch and enhance productivity from any location. This versatile app combines calling, chat, meetings, and collaboration all in one platform, allowing you to work more efficiently. Enjoy innovative and AI-enhanced calling experiences, along with integrated software solutions from partners. Additionally, you can choose from a broad range of devices tailored to any business requirement, and explore flexible financing options. Manage and monitor your voice and video calling effortlessly from the Teams admin center, maximizing the effectiveness of your business communications. With Teams, you can leverage the power of the internet to make and receive audio and video calls, ensuring connectivity and productivity, regardless of where your work takes you. This seamless integration promotes collaboration and enhances your overall workflow, making it an indispensable tool for modern businesses.
  • 25
    BluIP Reviews
    We offer an advanced and highly adaptable Cloud Unified Communications (UC) service that utilizes top-tier, reliable network hardware and software from industry leaders like Cisco, BroadSoft, IBM, and ACME Packet, all configured as a geo-redundant solution. Our call client is device agnostic and boasts seamless integrations with popular productivity platforms, including G-Suite, Office 365, Salesforce, and Zendesk, enhancing user experience. In addition to a variety of calling functions, our Dialer automatically showcases pertinent caller interactions and data, facilitating more personalized and effective communication. As a Tier 1 provider, integrator, and developer of Cloud Communications and customized applications, BluIP prides itself on a robust development culture and exceptional integration capabilities. We are dedicated to achieving optimal outcomes for our customers by providing tailored solutions along with white-glove implementation and support, catering to both standard and complex needs. Our commitment to excellence ensures that every client receives unparalleled service tailored to their specific requirements.
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