Best SIP Trunk Providers for Microsoft 365

Find and compare the best SIP Trunk providers for Microsoft 365 in 2025

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

  • 1
    Sherweb Reviews

    Sherweb

    Sherweb

    $7.25 per month
    1 Rating
    Experience a dependable and secure solution tailored for your online business needs. Everything necessary to kickstart your venture is at your fingertips. Enjoy a user-friendly control panel designed for effortless website management. Our team of seasoned support technicians is readily available to assist you. You'll also gain access to an extensive library filled with pre-configured web applications perfect for your site. By partnering with Sherweb, your trusted cloud ally, you’ll be amazed at the possibilities that lie ahead. Our comprehensive cloud management platform, designed to adapt to changing business demands, enables IT professionals to utilize flexible solutions backed by exceptional service from reliable experts. With a foundation rooted in cloud technology, IT professionals can rest assured knowing our continually growing selection of innovative products has been carefully curated and vetted, featuring unique proprietary software you won’t find elsewhere. We provide a robust and mature platform that allows you to balance time efficiency with cost savings seamlessly. Furthermore, you can automate and connect nearly any process by harnessing our state-of-the-art APIs, ensuring your operations are both efficient and effective. With Sherweb, the future of your online business is bright and full of potential.
  • 2
    Spoke Phone Reviews

    Spoke Phone

    Spoke Network

    $15 per month
    Spoke is the leading platform for high-value, complex, and regulated conversations. Spoke guides employees to say and collect the right things so deals move forward and customers get better experiences. Spoke integrates with everything, personalizing conversations, driving productivity, and ensuring compliance. Trusted for over 250,000 conversations every day with features such as calls, SMS, WhatsApp, Team Inbox, programmable routing, Personalized IVRs, caller insights, forms, analytics, +more. The Problem Today, only a small portion of your employees are equipped or have the skills to have highly-contextual, complex, and personalized customer conversations. The Solution Spoke empowers every employee with the information and skills to hold high-quality compliant conversations that drive positive customer and business outcomes. To achieve this, Spoke Phone combines the best parts of traditional business phone systems, high-cost contact centers, and leading business process automation, and has made it all easy to use on a mobile phone or desktop. By integrating a customer’s information, processes, and automation into calls, SMS, and WhatsApp conversations occurring on mobile phones, desktops, and other devices.
  • 3
    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.
  • 4
    Operator Connect for Microsoft Teams Reviews
    Intrado's Operator Connect Connect, an official Microsoft direct routing partner is a Microsoft Teams certified phone system. You can chat, call, and even hold meetings all from one place. Operator Connect offers an affordable alternative to Microsoft calling plans if you need commercial flexibility and service in areas that are not covered by Microsoft. You can bring your own SIP solution to expand international coverage. Intrado's cloud first delivery allows you to eliminate local gateways and avoid expensive PRI circuits. This will ensure maximum uptime and reduce the cost of local gateways. Intrado can support all services and integrate with your existing carriers partners or PBX. No need for new hardware. We also offer licensing for Microsoft Teams and Microsoft 365. Find out what you can do with these two popular business solutions. Communication solutions work together better. To simplify your business, consider an all-in one communication suite. It will allow you to use one provider for all aspects of calling, collaboration, and contact center.
  • 5
    Intermedia SIP Trunking Reviews

    Intermedia SIP Trunking

    Intermedia Cloud Communications

    Upgrading your on-premise business phone system through SIP Trunks not only enhances flexibility but also reduces telephony expenses. You can either modernize your current phone infrastructure or save enough to invest in a brand-new system. Most contemporary phone systems seamlessly integrate with SIP Trunking without any need for additional hardware. Our Partners collaborate closely to facilitate all aspects of setup and migration. Reduce your costs with lower rates for long-distance, toll-free, and international calls. By utilizing Intermedia's robust enterprise-grade data centers, you can safeguard your operations against local outages. Traditionally, customers incur costs based on a per-line charge for physical phone lines originating from their central office, leading to significant expenditures. The initial investment is substantial, and the costs associated with adding more lines for growth can be prohibitive. However, SIP Trunking allows phone calls to be transmitted over the internet, fundamentally changing the cost structure and flexibility of business communications. This shift not only streamlines operations but also positions businesses for future scalability and efficiency.
  • 6
    Sewan Reviews
    In today's fast-paced environment, the ability for professionals to effectively communicate with colleagues and clients is more crucial than ever. Our telephony solutions are flexible enough to cater to diverse requirements, whether you are in a traditional office setting or working remotely. From fixed and mobile telephony to trunking and contact centers, our business telephony offerings are increasingly versatile. Sewan's solutions are customizable to meet a wide range of demands. The advanced voice technologies integrated into our products ensure exceptional call clarity and unwavering reliability. We understand that business needs can evolve swiftly, allowing for quick adjustments such as adding or removing lines and importing contacts in mere moments. No matter the type of business telephony you opt for, our solutions aim to be as economical as possible, eliminating unnecessary features. Additionally, our offerings are tailored for the global market, ensuring that each package can be modified according to specific requirements. This comprehensive approach helps businesses of all sizes maintain efficient communication channels.
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