Best On-Premises Business VoIP Providers of 2025

NXTPulse offers cutting-edge innovations that can elevate your business operations significantly. The platform is packed with a variety of features, including seamless integrations with Microsoft Teams, which enhance its functionality. With its extensive capabilities, NXTPulse empowers you to work flexibly from any location at any time. It is compatible with leading platforms such as Office 365 and numerous popular CRMs. Moreover, NXTPulse provides robust conference bridges, facilitating effective communication among all participants. You can rely on NXTPulse to manage your hosted voice solutions, freeing you from that responsibility. Regular updates and new features ensure that the platform remains current and effective. Strong SSL security safeguards the connection between your organization and the NXTPulse cloud, ensuring that your communications remain secure. In addition to its numerous productivity-boosting features designed to enhance customer service and operational efficiency. 3cx Integrations - AI, Microsoft Office 365, Google Workspace and more for a robust and flexible phone system tailored to your business needs. Inclusive Licensing - Benefit from included 3cx licenses, reducing additional costs. Scalable Solutions - Grow your business with scalable phone systems that adapt to your evolving needs. Fully Managed Solutions - Enjoy peace of mind with our fully managed services Amazon Web Services - Utilize the power of AWS for reliable and scalable hosting

We offer the perfect VoIP solution for anyone looking to simplify their office or mobile communications. TecWerks offers a unique alternative to other telecom providers. We offer options that can scale from the smallest company to multi-site national companies without the sticker shock. You will save BIG on your phone service costs with our telecom plans. There are no hidden fees. Are you required to leave the office occasionally? Our VoIP phone systems can be used on mobile devices. Don't miss an important call if you are not available. You can take the office with you, even if your cell phone number is not publicized. Are you looking for remote workers or field staff? No problem. We have the solution that fits your needs. We can customize telecom packages to meet your business's needs. VoIP (voice over IP), which is completely portable, reduces costs and increases accessibility for your business. We have everything you need, from basic to advanced cloud-based voice-over-IP solutions - we have it all.

Thirdlane is built for service providers and MSPs who need a multi-tenant, white-label UCaaS platform with deep API control. It delivers voice, video, chat, and contact center features while giving providers the ability to integrate billing, CRM, and IT workflows with ease. Why providers choose Thirdlane: - True multi-tenant PBX architecture built for scaling to thousands of tenants. - White-label flexibility - deliver a branded experience to your customers. - Thirdlane Connect apps unify messaging, calling, and meetings across all devices. - Built-in Contact Center for sales and support teams. - CRM screen pops and Click-to-Call to boost productivity. - Extensive APIs for automation and third-party integrations. Business outcomes: - Launch branded UCaaS without the heavy R&D cost. - Increase recurring revenue with scalable multi-tenant architecture. - Offer enterprise-grade features at a competitive price point. Thirdlane empowers providers to own their UCaaS offerings end-to-end, increasing margins and ensuring long-term customer loyalty.

PBXware is the first and most established IP PBX Professional Open Standards Turnkey Telephony Platform. PBXware has been providing flexible, reliable and scalable Next Generation Communication Systems (NGCS) and VoIP solutions to small and medium-sized businesses (SMBs), enterprises and Internet Telephony Service Providers, (ITSPs), call centers and governments around the world since 2004. This is done by combining the best of the latest technologies. Bicom Systems softswitch is available in the Business, Call Center, and Multi-Tenant Editions. Each edition supports specific features that maximize performance, reliability, expandability, and expandability.

Protect your communications by ensuring your VoIP calls are encrypted and safe from eavesdropping. If you value your privacy during conversations, you’ll appreciate our complimentary encryption services for all types of communications, including text, voice, and video, utilizing TLS/SRTP and ZRTP protocols. Our VoIP softphone seamlessly integrates with your contacts, providing a consolidated list for quick access from various sources such as Outlook, Windows, Mac, LDAP, XMPP, XCAP, as well as mobile platforms like Android and iOS. You can also easily identify incoming calls before answering, enhancing your communication experience. Zoiper is compatible with a wide array of operating systems, whether you are on macOS, Linux, or Windows, and also supports iOS, Android, and web browsers. We strive to continuously improve our offerings and expand our compatibility. Forget the complex jargon; our solution encompasses Audio, Video, Fax, Presence, and Instant Messaging, all accessible through a user-friendly interface designed for your convenience. With Zoiper, you can communicate confidently and efficiently across multiple platforms.

*astTECS IPPBX system is the ideal solution for any business, large or small. *astTECS PBX has all the top-end features at an affordable price and is TEC certified by DoT (Govt of India). *astTECS IPPBX solution allows your business to be flexible, innovative, competitive, and future-ready while reducing telecom expenses. *astTECS Call Center Dialer is an omnichannel contact centre solution that offers advanced features and a real-time dashboard for agent monitoring. Advanced analytics and AI-based call center dialer will improve agent productivity and customer engagement. *astTECS provides a complete call recording solution for your company. *astTECS voice recorder is easy to use and offers advanced features. Integration with any PBX is seamless. Supports ISDN/PRI, IP, analog lines and mobile to record all incoming and outgoing calls.

Toll-free and local numbers are available from more than 160 countries. Forward incoming calls from any phone, PBX, or SIP. Our global network offers multiple layers of redundancy. You can make international outbound calls by using any of your business numbers as a Caller ID. Showing a local caller ID will increase your success rate. To make outbound calls, connect our SIP trunks with your phone system. You can easily set up and modify smart calling routing features such as auto-attendant /IVR, location and time-based routing, and simultaneous ringback tones. Custom greetings, call recording, voicemail, and call recording are all possible. You can easily add or remove virtual numbers, modify calling plans, download call detail records and invoices, modify advanced features, and reach technical support 24/7. Contact your account manager.

KrispCall allows you to manage all your telephony needs, whether they are personal, business, or corporate, using one app (Web, Android and iOS). You can access international numbers from the comfort of your own home. KrispCall makes it easy to create international numbers for national, local, shortcode and toll-free numbers (for more than 100 countries) in no matter how fast you want. You can easily manage your call logs. KrispCall's unified phonebox allows you to manage and monitor all your business calls, voicemails, and recorded conversations from one place. Call your international clients through their local numbers to earn their trust. KrispCall offers international numbers for your business at an affordable price. Our embeddable widget makes it easy to reach your customers. Clients can now easily call you by clicking on the KrispCall widget embedded in their website.

Fully featured, cloud-hosted, high quality VoIP service for all of your business needs. Accessible nationwide, locally owned in Southern Utah, and affordable to help your business succeed. Sign up on our website, select how many phones you want, get a copy your bill, and then we will take care of everything from setup to training. We will match the quotes of competitors to prove our low rates. Because we are so confident in our service that we don't require contracts, our service speaks for itself. All our features are included in the price, as well as bundles and packages. Unlimited calls, SMS, EFax dashboards, reporting and analytics, call recording. Professional voice recording. Ring groups, call flow management. IVR systems, mass messaging, voicemail transcription, call logs. 24/7 customer service.

We unleash human momentum with collaboration, connectivity, and communications technology. All business is human—and when custom technology empowers human ingenuity, people and companies thrive. High performing teams do more, achieve more, and win more. Companies become agile, efficient, and resilient. Our team takes pride in making technology easy and cost effective. We love what we do—and it shows in the way we partner with you, from our first conversation to ongoing post-install support. Working with over 30,000 customer locations in 65+ countries, we deliver straightforward, secure, and scalable global managed services and advanced collaboration and communications solutions. Together let’s build your human momentum.

Intrado provides a cloud-based enterprise-grade calling solution that is fully hosted and managed. This includes team collaboration which includes messaging, meeting and mobility solutions as well as the benefits and features of Cisco Webex devices. VoiceMaxx CE also includes Cisco Hosted Collaboration Solution, (HCS), which is a cloud service that builds on Cisco's tried-and-true on-premises Call Manager offering. This makes it an ideal service choice for medium to large companies switching from a premise-based service. Intrado fully supports this solution with geo-redundant Data Centers, which provide enhanced business continuity and disaster recovery. Intrado engineers are available 24/7 to support you.

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.

Ajoxi provides wholesale VoIP termination. They use modern routers and equipment to ensure reliable service and high-quality connectivity. Ajoxi has technicians who monitor and fix any problems that may arise.

OfficeConnect™, provides unified voice, conferencing and messaging as well as faxing. Our VoIP phones are more flexible and cheaper than legacy on-premises systems. You can keep your projects moving and synchronize teams with best-in class audio and video conference made easy. UniVoIP encrypts all voice traffic, both from remote and on-site telephones. It uses SRTP with 128 bit AES encryption. SRTP conforms to both the federal standards FIPS 140-2 Certified encryption and the Department of Defense's PKI Digital Certificate.

Discover an extensive array of communication solutions conveniently located in one place. Join Traverse Telecom and enable your customers to connect effortlessly! Elevate your business framework with top-notch phone connectivity that enhances customer experiences. Greet your clients with a reliable standard telephone service, no matter where you are working from. Expand your outreach and connect with international customers through our premier International toll-free 800 numbers. Want to tap into global markets? Open your business to new opportunities by leveraging our Direct Inward Dialing (DID) capabilities available in over 90 countries. Don't let valuable business opportunities slip away due to missed calls; our call forwarding service allows you to direct customer calls to your preferred business location based on your priorities. We offer comprehensive Cloud PBX Solutions, eliminating the need for traditional on-premises systems. With Cloud PBX, you gain unparalleled flexibility and control, all while enjoying a robust suite of advanced features that can enhance your operations. Embrace the future of communication and watch your business thrive.

My Country Mobile offers low-cost, easy-to use VoIP solutions that are excellent. Enjoy the following features with a 30-day, risk-free trial of our premium VoIP phone system. Our mission is to enable families and friends to stay connected across borders by leveraging technology and intelligence. We aim to empower personal and professional connections with ease and efficiency. Our team has a wealth knowledge and expertise that allows us to deliver high quality results and exceed clients' expectations. We look forward to expanding our portfolio and growing. My Country Mobile, with its tens of year's experience in developing technologies and solutions that facilitate communication and sharing for businesses and individuals worldwide, has been a leader in the development of these technologies and services.

For over two decades, Diabolocom has been transforming customer engagement with our cloud-native Contact Center as a Service (CCaaS) solution. Powered by proprietary generative AI, Diabolocom delivers advanced automation, improved reachability, and actionable insights tailored to today’s customer service and sales demands. Our AI Assistant enhances each interaction through real-time transcription, satisfaction analysis, and predictive next-best-action guidance. What makes Diabolocom unique is our combination of native AI for CX and full telecom functionality, creating a hyper-customized telephony experience. By automating repetitive processes, teams can redirect their focus to driving customer loyalty and revenue growth. Our solution integrates natively or via API with CRMs such as Salesforce, Oracle, and Microsoft Dynamics, ensuring complete visibility across every touchpoint. Leading brands like Mitsubishi Electric, Nikon, and Brinks rely on Diabolocom to deliver differentiated, AI-optimized customer experiences. With 97% faster post-call handling and a 12% reduction in churn, our platform drives efficiency and keeps teams agile.

Virtual IP PBX (Private Branch Exchange), or Phone System Appliance – CompletePBX is the heart and soul of Xorcom's hardware and software telephone systems. It's built on top of Asterisk and Linux platforms and is designed for stability and high performance. CompletePBX was built from the ground up to offer ease-of-use, advanced features, and security at all levels. Get a fully functional, free CompletePBX 5 virtual machine evaluation now! CompletePBX certification training is available online for free. It will guide you through the basics of the system. You can save a lot of time and effort if you do it yourself. We can help you get there quicker.

Ecosmob provides market-leading expertise and solutions for businesses around the world that implement trending technologies. Modernize your network with cost-effective and advanced solutions. Ecosmob offers innovative VoIP services that are tailored to your business' needs. Ecosmob has extensive expertise in Open Source Telephony development. You can create interactive, scalable and robust web applications with the most advanced tech stacks. A responsive website will take your business to the next level and make your brand stand out from the rest. Mobile application development services can help you expand your digital reach and reach a wider audience. We create mobile applications that are highly scalable and robust to meet your business needs. AI and ML technologies can open up new business opportunities and possibilities.

Made-in-Canada VoIP solution designed for businesses with 5 or more users. Our VoIP experts will help you choose the right combination of hardware endpoints, network gear and ISP connections for your specific location. We make it easy for your company to communicate with your clients using crystal clear VoIP every single time!

Pulse is a leading provider for call center solutions. Its Web Real-Time Communication enhances the efficiency of operations in call centers. With over two decades of experience in the call center industry, Pulse has helped clients in Pan India, Northern America and Europe to establish seamless customer interactions. Pulse's personalized call center solutions, which are equipped with advanced features, optimize the customer journey while maximizing revenue and loyalty. This allows businesses to meet customers' needs by providing them with a customized solution. These features encourage proactive customer engagement, and deliver exceptional user experience.

Take charge of your business communications effortlessly, as no technical expertise is necessary. VoIPline Telecom's phone system empowers you with complete oversight of your communications through an intuitive visual block diagram that can be accessed via any web browser. With an easy drag-and-drop feature, you can place over 30 telephony configuration tools onto the canvas, allowing for personalized arrangements to suit your preferences. You can tailor the incoming call flow by connecting various objects, ensuring that the entire process is visually comprehensible even for those without technical knowledge; every step of how an incoming call is managed is clearly displayed. Moreover, you can create multiple separate canvases to organize different call logics through tabs, which helps prevent any confusion that may arise from overloading a single canvas with too many elements. This versatility ensures that your business communication remains streamlined and efficient at all times.

Vodia is a software-based PBX that runs on Windows and Linux. It offers all the advanced features you would expect from a full-featured PBX, including call queues, auto attendants and call forwarding. Vodia is also the pioneer in Multi-Tenancy. You can host Vodia on a dedicated VM( Virtual Machine) in the cloud, premises, and maintain multiple FQDNs for each customer. Sign up for a hosted demo license code for 60 days.

The on-premises business phone solution that provides all the essential tools for your organization to enhance customer interactions. At the core of Mitel's premier on-site communication offerings lies MiVoice Business, which includes MiCollab, MiTeam Meetings, and MiContact Center Business, allowing employees to reap the benefits of unified, scalable, and mobile communication seamlessly. This solution equips your business with everything necessary to elevate communication standards through effective mobility, team collaboration, video conferencing, and outstanding customer experience management. MiVoice Business is tailored to accommodate businesses ranging from 5 to 130,000 users, whether operating from a single location or across multiple sites worldwide. Furthermore, the software installed on Mitel Collaboration Service Appliances can run on standard x-86 servers within a virtualized setup, streamlining operations by reducing the need for multiple appliances—an especially valuable feature for clients opting for a centralized unified communications deployment. With MiVoice Business, organizations can ensure that their communication infrastructure is both flexible and robust, fostering growth and innovation.

Experience a swift return on investment through enhanced cost savings, operational efficiencies, and elevated customer service. Our Call Management System (CMS4) equips organizations with the tools to manage their telephony expenses effectively, offering in-depth performance analytics. Regardless of whether you operate a small system or a vast, globally clustered network, CMS4 supplies the essential information you need in your preferred format. The system can be deployed as an On-Premises, Cloud, or fully managed hosted service solution. CMS4 enables you to analyze traffic at each gateway or trunk group, generating grade of service reports that reveal whether your capacity aligns with demand. By leveraging this data, organizations can ensure their systems operate efficiently to accommodate present needs while also anticipating future demands. This adaptability not only optimizes resources but also positions businesses for sustained growth.