List of the Top 25 Business Phone Systems for Microsoft 365 in 2026

3CX is a versatile, software-driven IP PBX built on open standards that delivers comprehensive Unified Communications straight out of the box. It caters to businesses of all sizes and across various sectors, offering a full suite of features that range from mobility and presence indicators to sophisticated call center functionalities, all at a significantly reduced cost. This platform is particularly well-suited for remote work environments, featuring mobile applications, video conferencing capabilities, and live chat integration for websites. Installation, management, and maintenance of the PBX are straightforward, allowing users to easily handle it themselves on their own hardware, a dedicated server, or via a cloud environment. Alternatively, users can opt for 3CX's hosting services to simplify their setup even further. With its user-friendly design and extensive feature set, 3CX empowers companies to enhance their communication strategies effectively.

Dialpad offers a modern business phone solution that transforms conventional desk phones into a versatile cloud-based system compatible with any device. With this platform, teams can enjoy high-quality voice calls, send SMS and MMS messages, and utilize sophisticated features such as call routing, voicemail transcription, and AI-driven insights, all integrated into a single cohesive system.

The Yeastar P-Series Phone System offers an all-in-one solution for business communication, integrating voice, video, and collaboration features into one powerful platform. Designed specifically for today's businesses, it consolidates disparate communication tools into a cohesive "PBX-Plus-More" environment, enhancing efficiency and connectivity.

Adversus offers more than just a typical business telephone system; it is a comprehensive outbound calling platform that integrates workflow automation, performance monitoring, and compliance features. With a cloud-based interface, users can effortlessly make and oversee a large number of outbound calls without the need for physical equipment. The platform enables calling to over 150 countries and boasts an impressive uptime of over 99.97%. Additionally, it is ISO certified and adheres to SOC 2 standards. Tailored for sales-focused companies that require more than mere communication capabilities, Adversus provides an organized approach to outbound calling and complete transparency regarding representative performance.

You can oversee all your business functions remotely through a single platform. By utilizing dependable voice and video services, along with faxing, messaging, and conferencing capabilities in the cloud, you can enhance productivity and streamline communication. This flexible, all-in-one cloud communication and contact center solution is tailored for small and medium-sized enterprises. Additionally, you have the option to customize your settings and features, ensuring your conference calls operate according to your preferences, with support for up to 100 participants. Our VoIP phone system or hosted PBX serves as a modern alternative to traditional small business phone systems, utilizing your broadband connection to facilitate seamless communication. You can effortlessly share your screen and stream HD video for any meeting size, whether large or small, without the need for downloads. Furthermore, you can send and receive SMS and MMS messages directly online, as well as manage internet faxing directly from your dashboard. Infinite provides the latest VoIP phones, which come fully set up and ready for immediate use; simply turn on your device to start your conversations. With these tools at your disposal, your business can thrive in a connected world.

KrispCall enables users to handle all their telecommunication requirements—be it personal, business, or corporate—through a single application available on Web, Android, and iOS platforms. From the convenience of your home, you can obtain international phone numbers. The platform simplifies the process of generating international numbers, including national, local, shortcode, and toll-free options, across more than 100 countries, regardless of how quickly you need them. You have the ability to efficiently oversee your call logs as well. With KrispCall's integrated phonebox, all your business calls, voicemails, and recorded conversations can be managed and monitored conveniently in one location. You can connect with your international clients using local numbers, which helps in building their trust. KrispCall provides affordable international numbers tailored for your business needs. Furthermore, our customizable widget allows for straightforward customer outreach, as clients can reach you effortlessly by clicking on the KrispCall widget embedded on their website, enhancing your overall accessibility. This seamless integration not only improves communication but also boosts your professional image.

Thirdlane is a comprehensive multi-tenant communication platform that combines VoIP calling, unified messaging, video conferencing into powerful solution. Designed for both enterprises, MSPs, telecom providers and resellers, it offers unmatched flexibility, cost-effectiveness, and scalability. Highlights: - PBX with advanced call routing, voicemail, and conferencing. - IVR, call queues, recording, and analytics. - CRM integrations with Click-to-Call and caller ID screen pops. - Thirdlane Connect desktop, web, and mobile apps for collaboration. - Flexible choice: cloud-hosted or on-premises. - White-label Who it’s for: - MSPs and UCaaS providers launching branded communications. - Enterprises seeking a customizable phone system with CRM integration. - Telecom providers and resellers looking for modern PBX offerings. Thirdlane delivers a complete, future-proof phone system for organizations that want to unify communications and scale without compromise.

The cloud phone solution is specifically built for the Zoom platform, offering a modern user interface paired with enterprise-grade features that enhance voice communication. The Zoom administrator portal facilitates user management and provisioning, along with monitoring call quality and usage metrics. With a globally distributed cloud infrastructure, Zoom ensures secure HD Voice with exceptional reliability suitable for enterprises. Users can seamlessly make and receive calls, share content, and engage in video meetings, while also having the ability to send chat messages through Zoom's desktop or mobile applications. Additionally, phone calls can be effortlessly upgraded to Zoom Meetings, eliminating the need for participants to disconnect or dial into a different conference bridge. Native applications for Windows, MacOS, and Android are designed for ease of use and optimize both voice and video quality. As the range of countries offering local phone numbers continues to expand, customers looking for simplified global telephony management can easily port their numbers to Zoom to streamline their communications. This comprehensive integration allows businesses to enhance collaboration and connectivity across various regions.

GoTo Connect enhances your business's professional image significantly. As a comprehensive, cloud-based business telephone system, GoTo Connect supports countless organizations across diverse sectors and sizes in elevating their communication methods and attaining enhanced success. The Hosted VoIP service from GoTo Connect offers an extensive array of functionalities that can effectively substitute traditional landline phones, including unlimited voicemail options and automated attendants, making it a versatile choice for modern businesses. With its robust features, GoTo Connect not only streamlines communication but also fosters collaboration within teams, ultimately driving productivity and growth.

VoIPco provides an extensive range of services and an impressive array of features aimed at enhancing your company's telecommunications experience. By utilizing VoIPco, businesses can modernize their phone systems and potentially see a return on investment within 6 to 12 months. You can utilize your telecom services across various devices connected to your IT network, such as desktop phones, mobile devices, and computers. The Unified Communications (UC) system integrates voice, video, chat, and contact center/IVR applications smoothly, leading to significant improvements in communication and overall productivity. Our robust software and services empower you to manage your account effectively while seamlessly integrating our premium cloud communication solutions, ensuring that your business operates efficiently and remains competitive in today's fast-paced environment.

Designed for both large enterprises and emerging companies, the Yay.com business phone system presents a flexible and innovative communication platform that not only cuts costs but also enhances organizational adaptability. With user-friendly softphone applications compatible with your existing devices, remote and hybrid work becomes effortless and efficient. You can collaborate and communicate from anywhere in the world, allowing you to operate in a manner that suits your needs best. Yay excels in supporting distributed teams, whether they are in the office, at home, or on the move. Take advantage of a wide array of business functionalities, including CRM integrations, IVR call menus, call queuing, and much more. Start with a free trial today and discover how Yay.com can empower your business to flourish and succeed. Additionally, with its comprehensive tools and features, you can optimize your team's performance and improve customer interactions effectively.

A single call can link all aspects of your business operations. Fusion Connect serves as your Managed Services Provider, delivering comprehensive internet solutions for SDWAN, business VoIP (UCaaS), internet connectivity, secure networking, and various other needs. Their Business VoIP service features Internet-based faxing and softphone capabilities, ensuring compatibility with both Windows and Mac systems, as well as a range of other devices to maximize usability. Additionally, Fusion Connect is dedicated to enhancing your business communication and connectivity experience.

Are you in search of a cost-effective and dependable phone system for your business? Imagine having the ability to focus more on your customers rather than spending time on hold with your service provider for every minor adjustment. FluentStream is the solution you need! Our dedication lies in offering the finest business communication platform available. We offer no-contract options for every account, along with round-the-clock client support. Our team will assist you throughout the onboarding experience, recognizing the challenges that can come with setting up a phone system. We're more than willing to handle the complex tasks so you can focus on what matters most. This commitment to ease and support is what makes working with us a seamless experience. With FluentStream, you can enjoy peace of mind knowing we prioritize your business's communication needs.

Engage your customers at every stage of their journey through both voice and digital channels such as chats, SMS, email, and social media platforms. By seamlessly integrating business communications with your operational systems, you ensure that employees have access to crucial information at each customer interaction point. With CoreInteract’s intuitive drag-and-drop interface, managing workgroups and routing rules tailored to your business requirements becomes a straightforward task. You have the ability to prioritize and sequence which workgroups will handle incoming customer inquiries, enhancing efficiency. Additionally, CoreInteract allows you to coordinate your interactions directly within Teams, eliminating the need for separate desktop applications. Team members can easily differentiate between customer and internal calls, as workgroup calls are clearly labeled. Moreover, CoreInteract can pull up a customer record from Dynamics 365 for every answered call, providing enhanced oversight of customer data and enabling direct calls to customers through Dynamics 365, thereby streamlining the engagement process even further. This holistic approach ensures that your team is always well-prepared to meet customer needs effectively.

Voxloud emerges as Italy's first cloud-based phone system, integrating AI technology to boost productivity and conserve precious time. When you switch to Voxloud, you can keep your current landline number without incurring any extra charges. The activation process is incredibly straightforward, allowing you to establish your new landline number and phone system in a mere 59 seconds, which means you can begin professional communication right from day one. Transitioning from conventional phone systems to Voxloud signifies adopting a more intelligent working method with their cutting-edge cloud phone solution. This all-in-one telephone system is designed to cater to the communication needs of small and medium-sized enterprises. Improve the management of your incoming calls by implementing a customizable interactive voice response (IVR) system that offers various levels of interaction. Enjoy the ability to work flexibly from anywhere, at any time, using our intuitive apps and VoIP devices on your laptop, tablet, or smartphone. Adding users from diverse locations and modifying your phone system settings is easy and can be done with just a few clicks, ensuring it adapts to your business's changing needs. Additionally, enhance your phone interactions through the leading CRM integrations available, creating a well-rounded solution for all your communication requirements. Consequently, Voxloud empowers your team to collaborate efficiently, regardless of their physical locations, fostering a truly modern approach to communication. With Voxloud, businesses can expect both convenience and innovation, making it an ideal choice for the future of work.

UniVoIP's cutting-edge software and solutions enhance productivity, streamline operations, and boost performance, all while adapting to and exceeding the current challenges in business communication. The flagship offering, OfficeConnect™, boasts over 500 features, including PBX, Omnichannel Contact Center, and Unified Communication capabilities, accessible through both private and public networking options within a multi-instance infrastructure. Additionally, UniVoIP provides UniBridge, a robust solution for high-definition audio, video, and web conferencing, which includes features such as screen sharing and meeting logs, complete with timestamps and concise summaries, all without the need for software installation. This comprehensive suite of tools ensures that businesses can communicate effectively and efficiently in an increasingly digital world.

CallHarbor provides UCaaS solutions specifically tailored for small to medium-sized enterprises. Our platform not only delivers insightful statistics about employee performance but also seamlessly integrates with your current applications, ensuring you can utilize all features regardless of your location. We go beyond facilitating outbound communications; CallHarbor partners with a variety of sectors, offering top-tier systems designed to enhance communication efficiency. With our exceptional mobile and web applications, you can maintain productivity from virtually anywhere. Our services encompass everything from making calls on your desktop to managing voicemail through email, as well as connecting with friends via your mobile device. CallHarbor imposes no restrictions on the number of Queues, Auto-Attendants, Parking Lots, or Users in your system, empowering you to expand from a small scale to a larger operation. We stand by you throughout your growth journey, alleviating concerns about dropped calls thanks to our dependable geo-redundant servers. Moreover, we provide over 25 premium features included in your initial plan for a single flat rate, ensuring that you have all the tools necessary for successful communication. With CallHarbor, you can focus on your business growth while we handle the complexities of communication infrastructure.

Avaya Cloud Office serves as a robust communication solution that operates entirely in the cloud, merging voice, video, messaging, meetings, and collaboration tools into an integrated platform. It successfully connects in-office, remote, and mobile workers across different devices, ensuring seamless and consistent communication. Featuring capabilities such as business phone lines, voicemail transcription, team messaging, and document sharing, it greatly enhances both productivity and collaborative efforts. Additionally, the platform prioritizes security through advanced encryption and integrates with over 100 business applications, including Salesforce, Office 365, and G Suite, aiding organizations in streamlining their workflows and improving overall effectiveness. Designed to meet the dynamic demands of contemporary enterprises, this versatile solution evolves alongside businesses to maintain relevance in a fast-paced environment. Its user-friendly interface further encourages adoption and maximizes the potential for teamwork and communication efficiency.

Collaborate effortlessly with your team while maintaining seamless connections with clients. No matter where you are, leverage any communication method across a variety of devices. A comprehensive platform encompassing telephony, PBX, messaging, meetings, and contact center features allows for easy engagement with both colleagues and customers. Empower your workforce with tools designed to boost their productivity. This all-in-one application simplifies customer interactions and fosters team collaboration. Agents can operate from any location while providing outstanding service to clients. Optimize your workflow with a single, robust app for calls, messaging, and virtual meetings, facilitating real-time collaboration without disruption. Integrate intelligent features that clearly convey your availability to your colleagues. Strengthening relationships and enhancing productivity becomes a straightforward task. Access a full suite of voice communication options, including both fixed and mobile telephony, all organized in one place. Regardless of the device or platform, your calling experience remains uniform, whether through cellular, PSTN, or internet, ensuring consistent and dependable communication. The ability to connect without obstacles significantly improves both individual and team performance, fostering a more streamlined and effective work environment. Additionally, this unified approach not only simplifies processes but also encourages greater innovation within teams.

A comprehensive cloud-based solution provides a range of communication tools, including voice, fax, text messaging, and both audio and video conferencing, which significantly boosts employee productivity whether they are at their desks or telecommuting. This platform facilitates seamless connectivity across various devices such as smartphones, tablets, softphones, or desktop IP phones, thus enhancing customer interaction capabilities. By consolidating calls through a single phone number, organizations can more efficiently direct incoming inquiries to the right team members, simplifying the process for clients trying to connect. The system also comes equipped with features like instant local numbers, toll-free lines, internet faxing, and customizable services based on the time of day. Moreover, it integrates video meetings and collaborative online tools, allowing businesses to bypass the usual expenses related to maintenance, software upgrades, installation, and support that come with conventional systems. This intuitive communication platform allows companies to prioritize customer service over juggling multiple communication tools and channels. With the option to maintain up to three unique business numbers—one primary local number, one toll-free number, and an additional local number specifically for faxing—organizations can significantly enhance their availability and outreach. Ultimately, this cohesive service not only streamlines communication but also contributes to improved overall operational effectiveness, allowing businesses to thrive in a competitive landscape. Additionally, as teams become more mobile, the flexibility provided by this platform is essential for adapting to modern work environments.

We place our clients at the center of all our endeavors, embodying a truly client-centric approach in our organization. Our dedication to ongoing innovation ensures that we deliver solutions that not only boost your current operations but also facilitate your future growth. Whether you're a budding small enterprise or a well-established multinational company, our tailored offerings are designed to meet your specific needs. Updating your Hosted PBX in the Cloud is a breeze; you can make changes from anywhere and see the updates in real-time. Each Virtual Landlines Account comes equipped with our BusinessTalk App, which fosters smooth communication among colleagues, clients, and other contacts. Our platform consolidates a variety of features into a straightforward interface, allowing you to launch training campaigns and execute simulated attacks within minutes. Furthermore, you have the freedom to personalize your templates, landing pages, and simulated attachments, and you can even spoof your own domain to conduct simulations of CEO Fraud attacks, complete with reply tracking to gauge engagement levels. This comprehensive approach not only empowers your organization to effectively defend against potential threats but also enhances overall operational efficiency, reinforcing our commitment to your success. Ultimately, we believe that by equipping you with these advanced tools, we contribute to a safer and more productive business environment.

Our experienced team will customize your BroadConnect VoIP service, providing the essential hardware and support needed to optimize your office phone system to its highest capabilities. BroadConnect Canada is committed to fulfilling the diverse needs of businesses nationwide, offering tailored solutions for all your IP telephony needs alongside commercial phone systems specifically crafted for organizations. By integrating unified communications with collaborative tools like video conferencing and file-sharing, we create a dynamic and productive work environment. We guarantee exceptional call quality, flexibility, and scalability of your system, all facilitated through our sophisticated phone features operating on a reliable global IP network. Our dedication encompasses managing every aspect of your VoIP business phone service, ensuring that your office phone system is always equipped with the latest technological innovations. Furthermore, we provide a state-of-the-art unified communications service that opens numerous access points to authorized resources, significantly boosting productivity and connectivity in your workplace. Ultimately, our goal is to empower your business communications with seamless integration and advanced solutions that foster growth and efficiency.

Discover our affordable, sturdy, and intuitive cloud phone system, Wave, which is meticulously designed in the UK to enable you and your team to operate from anywhere. Setting it up is straightforward, thanks to our user-friendly control panel that makes management a simple task. With our quick onboarding procedure, you can be ready to go in just a few hours, accessing the system from any device worldwide while benefiting from a variety of features aimed at enhancing your business operations. Wave is specifically crafted for the contemporary workforce, streamlining how you engage in business practices. Our platform is equipped with crucial tools that empower companies to manage their telecommunication needs remotely. With Wave, challenges can be addressed more promptly, ensuring smooth communication and fostering collaboration like never before. This solution is engineered to help you minimize costs, conserve precious time, and seamlessly integrate hybrid and remote work structures into your organization. We are dedicated to your success, providing both landline and mobile-compatible minute packages alongside comprehensive access to all call management and administrative features. Our mission is to equip you with everything necessary to excel in today’s ever-evolving work landscape, and we continuously strive to enhance our services based on user feedback and changing market demands.

Consolidate Your Communications! All your messaging is centralized in a single platform! You can utilize chat, text, fax, and conferencing, as well as make calls, collaborate, and much more. NetFortris Community integrates all forms of communication—voice, video, messaging, collaboration, conferencing, and meetings—into an intuitive platform. By leveraging Cloud technology, your team can work together seamlessly on any device, regardless of their location, whether they're at the office, at home, or traveling. Designed to address your current and future business communication requirements, NetFortris Community is flexible and scalable as your business evolves. It consistently delivers the latest features when you need them most, ensuring that all communication channels are readily accessible in one convenient location, which enhances teamwork and boosts productivity. Accessible from any internet-capable device, Comm-unity empowers your team to work efficiently whether at home or on the go. As your organization expands, Comm-unity can easily accommodate additional users, whether you're adding one or hundreds. With this platform, you can ensure that your communication needs will always be met.

Integrating a Verge IP phone with the Allworx Reach™ app on your mobile devices creates a seamless communication experience, whether you're in the office or on the go. This configuration guarantees uninterrupted connectivity. The real-time synchronization of your contacts across mobile devices, Outlook via Interact Professional, and the Verge IP phone significantly enhances your communication capabilities. With Reach, you can easily transfer active calls between your mobile device and the Verge IP phone, promoting a smooth conversational flow. Moreover, you have the convenience of controlling your Verge IP phone from your mobile device, placing essential functionalities right at your fingertips. Our vision for a business phone system is one that adjusts to your individual needs; thus, the Programmable Function Buttons allow you to customize your phone’s features. You can create speed dials for your key personal contacts or colleagues within the corporate directory. Additionally, for colleagues who are part of the Allworx system, you will gain insight into their current presence status and call activities, such as whether they are engaged in a call, available, or on do not disturb mode. This capability is particularly advantageous for call center agents, as it enables them to efficiently manage incoming calls directed to their assigned ACD queues, ensuring they never miss a chance to assist a customer. With such features in place, businesses can foster a more collaborative and responsive environment.