Best Business Phone Systems for Slack

Intermedia Unite is an all-in-one business communications and collaboration platform designed to keep employees connected and responsive across locations, devices, and teams. The solution combines cloud phone service, video meetings, team messaging, file sharing, customer engagement tools, and productivity features into one integrated platform. By consolidating multiple communication tools, Unite reduces app switching and gives employees a simpler way to call, meet, chat, share files, and engage customers from desktop or mobile devices. Its enterprise-grade calling system includes more than 100 voice features that support professional business communications and consistent customer interactions. The platform also supports enhanced Microsoft Teams experiences, helping organizations extend communication capabilities within their existing collaboration environment. AI features such as transcription, summaries, and conversation insights help users retain important information, identify follow-up actions, and improve team efficiency. Mobile and desktop apps allow employees to maintain a consistent business identity whether they are in the office, remote, or on the go. Backed by strong uptime commitments and J.D. Power-certified support, Intermedia Unite is built for reliability and ease of use. By unifying communications, collaboration, and engagement, Unite helps organizations increase productivity while improving the way teams serve customers.

net2phone is an AI-powered business communication platform for companies serious about customer experience. Trusted by 500,000+ users and backed by 30+ years of experience, net2phone eliminates the friction of scattered channels and disconnected tools, so every conversation drives retention and growth. Communication breaks down when channels are scattered and tools do not talk to each other. net2phone solves this with a connected business VoIP and unified communications platform built for teams that cannot afford dropped context or slow resolutions. Unite, net2phone's unified communications solution, brings voice, messaging, video, and chat into a single place, with call and video recording, transcription, sentiment analysis on voice calls, automated action item tracking, and AI-generated follow-up emails. AI Agent handles inquiries and completes workflows on its own, answering questions, resolving support cases, scheduling, and managing returns across phone and chat, in 30+ languages, with seamless handoff to human agents when needed. Coach AI analyzes 100% of voice, video, and text interactions, giving managers full visibility into team performance with sentiment analysis, call summaries, and coaching recommendations by user or department. uContact, net2phone's omnichannel contact center, gives high-volume sales and support teams the automation, AI-driven routing, and real-time dashboards they need to deliver consistent customer experiences at scale. Every net2phone solution connects to the tools businesses already use, with a drag-and-drop workflow builder for automating processes without writing code, backed by enterprise-grade security and expert guidance at every step, from setup to integration to ongoing optimization.

Turn the world into your office. 800.com allows you to manage your business from your cell phone. No contract, advanced calling features, forwarding for cell phones, and advanced calling features Increase conversions, brand recall, higher call response, and SMS messaging. Manage extensions, send professional greetings and manage your account online. 800.com offers standard forwarding as well as simultaneous and sequential ringing. Toll free numbers are the best standard for telephone numbers and will be taken seriously by US customers. Local numbers signal that your company isn't focused on doing business in the entire country. Every 800.com member has access to every phone system tool, regardless of the plan they choose. You will not only help your customers avoid long distance fees but also your company.

Aircall is an innovative business phone solution that aims to modernize outdated phone setups and disconnected VoIP systems by offering a comprehensive cloud platform for voice calls, messaging, and team collaboration. It comes equipped with features like International Numbers, Business Hours routing, and Voicemail Drop, along with a Shared Inbox that provides teams with a unified customer context for every interaction. Powered by a global cloud voice network, Aircall ensures enterprise-level connectivity and exceptional audio quality, maintaining performance even as teams grow or transition to remote work. Distinguishing itself from traditional phone systems focused solely on reliability, Aircall integrates advanced AI technology: AI Agents handle routine calls autonomously, while AI Assistants provide live coaching to representatives during calls. With over 250 native integrations, it's the go-to phone system for more than 24,000 businesses managing sales and support within a single workspace.

Adversus offers more than just a conventional business phone solution; it is a comprehensive outbound calling platform that integrates workflow automation, performance monitoring, and compliance features. Experience the ease of making and overseeing large volumes of outbound calls through a cloud-based system, eliminating the need for additional hardware. The platform facilitates calls in over 150 countries with an impressive uptime of 99.97% or higher. It boasts ISO certification and SOC 2 compliance, making it ideal for sales-focused organizations that require more than basic telephony. Adversus provides structured outbound execution and complete insight into representative performance.

Transform your contact center operations with CallTools—an innovative cloud-based platform that unifies inbound and outbound dialing for maximum efficiency. Enhance agent productivity and foster stronger customer relationships with robust features like predictive dialing, call recording, and integrated multi-channel campaigns for email and SMS. Gain a holistic understanding of team performance through comprehensive analytics and real-time reporting tools. With flexible integrations, streamlined queue management, and customizable IVR options, CallTools simplifies workflows and delivers superior call outcomes. Optimize your connection rates using advanced data targeting and dynamic caller ID tools. Designed with an intuitive interface, CallTools empowers teams to handle even complex tasks with ease.

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.

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.

Dialpad Connect is a comprehensive AI-driven communication platform that unites voice, video, and messaging channels to improve both internal teamwork and customer engagement. The platform provides smart features such as live call transcription, voicemail transcription, AI-powered call recaps, and recommended next steps, allowing users to be fully present in conversations without missing key details. It offers deep integration with leading business applications including Salesforce, Microsoft Teams, Zendesk, and Google Workspace, creating a seamless experience across tools. Built on a resilient dual-cloud architecture, Dialpad ensures enterprise-level performance with 24/7 support, disaster recovery, and a 100% uptime service level agreement. Privacy and security are foundational, with certifications like GDPR, HIPAA, ISO, and SOC 2 safeguarding user data. Dialpad Connect supports a broad range of business sizes, from small teams to large enterprises, enabling better communication and faster decision-making. Its AI capabilities also include live coaching for agents during calls and detailed analytics to improve customer satisfaction. This platform empowers businesses to transform every conversation into a valuable opportunity.

Smart VoIP Solution for Teams of Any Size Zadarma replaces traditional phone systems with a cloud-based platform that’s easy to configure and use. Whether you’re a freelancer, small business, or global enterprise — Zadarma scales with your needs. What you get: - Local, mobile, and toll-free numbers worldwide - Virtual PBX with call queues, voice menus, call recording - AI Voice Agent and AI-speech recognition and analytics - Connect multiple offices and remote employees - Affordable call rates and flexible pricing plans - Real-time call statistics and recording storage - Support for IP phones, softphones, and browsers No hardware needed — just connect your team and start calling.

User.com is a full-stack software for marketing automation. It allows you to communicate with customers and manage your relationships. User.com is one platform that offers many features. It provides you with robust tools for sales, marketing, and support. You can use the different features to communicate with your customers consistently across a variety channels such as email marketing, mobile push, SMS messaging and call centers. This will make every visitor happy. You can see every piece of data and measure it all with all activities organized in one place. This can be customized to show only the essential metrics you choose to make it easy to take action. Are you ready to try it? Register now for a free trial at User.com -

RingCentral RingEX, a powerful cloud-based telephone system, helps optimize your business communication. RingCentral RingEX provides enterprise-grade communication tools, including voice, fax and text, as well as BYOD (bring your own device) capability. This allows you to work wherever and however you choose. RingCentral RingEX's core features include auto-recording and conferencing as well as unlimited long-distance calling and local calls. RingCentral RingEX can be customized to suit your needs by configuring call management features such as call forwarding, message alerts and missed-call notifications.

The phone system for customer service departments. Yodel is a receptionist who pre-qualifies inbound voice communications. It also allows call management without switching to other tools. Our battle-tested infrastructure allows you to collaborate on calls and enjoy crystal clear voice quality. Your phone system will be up and running in just minutes. No need to transfer your business phone number. Yodel integrates seamlessly with over 1000 software tools, so you can connect your phone to your existing workflows. Yodel gives you access to over 100 countries' phone numbers so you can stay in touch with your customers wherever they may be. Yodel only works with reliable local carriers to ensure the highest quality call quality. We provide reliable service uptime and a secure phone infrastructure. Modern customer service teams must provide high quality customer support and ensure customer satisfaction. Yodel takes out the pain from phone systems and delivers what's important: voice communication.

CallHippo is a modern Contact Center Tool that allows you to connect with customers. CallHippo is simple to use and offers robust functionality with extensive reporting and seamless integrations that enable sales and service teams have productive conversations with customers. CallHippo is trusted worldwide by more than 5000 companies.

Establish a fully operational contact center from the ground up in just a few hours while integrating cloud functionalities with your existing on-premises hardware. Transition seamlessly from outdated systems to cloud solutions overnight with Ozonetel, where our product specialists will thoroughly assess your needs before suggesting a tailored solution that aligns perfectly with your business objectives. Efficiently unify and automate both digital and voice communication channels, utilizing top-rated dialers to enhance the management of inbound leads and streamline outbound campaigns. You can set up a comprehensive call management system in 24 hours or even less, offering extensive inbound, outbound, and blended call center options. At Ozonetel, we provide secure cloud communication solutions that enhance the customer experience while reducing overall costs for contact centers. Renowned for pioneering the first cloud-based customer experience platform in India, we continue to distinguish ourselves through unmatched customer support and relentless innovation in AI technology. Our commitment to excellence ensures that we remain at the forefront of the industry, constantly evolving to meet our clients' needs.

Quo transforms business communications by merging phone calls, texts, and customer data into a shared, AI-driven environment. Its standout feature, Sona, acts as a virtual answering agent available 24/7 to engage callers, provide business-specific answers, and transfer conversations as needed. The platform gives businesses full oversight with unified conversation threads that consolidate every interaction across channels. Built-in CRM capabilities allow teams to manage contacts, add notes, and maintain context throughout the customer journey. Quo AI further boosts productivity with features like real-time transcription, call summaries, actionable recommendations, and AI-driven tags that automatically categorize interactions. Collaboration tools such as shared numbers, group calling, and warm transfers ensure smooth teamwork, while analytics provide managers with insight into performance trends. Customizable workflows, including scheduled messages, auto-replies, and full call flow control, give businesses flexibility to tailor communication. Backed by thousands of positive G2 reviews and trusted by over 60,000 companies, Quo is a proven solution for growing businesses that want faster, smarter, and more connected customer support.

Remote teams can use the cloud phone system. JustCall provides a phone system that works from any device, anytime, anywhere for sales and support teams. It takes only seconds to obtain phone numbers in 70 different countries and make or receive calls. In minutes, you can set up your own cloud phone system. JustCall is the fastest and easiest way to manage your phone service. Learn how JustCall is used by companies to handle phone calls. Increase sales and conversions by enhancing agents' capabilities. Get rid of the hassles associated with manual dialing and data logging. You can increase sales call volume and productivity by up to 300% You can deliver a seamless customer experience with IVR and Smart Call Routing, as well as Live Call Monitoring. With SMS Bots and a variety of features, you can offer your clients responsive, 24-hour support. Automated integrations can be used across many business tools and applications. CRM, Helpdesk, and other software automation tools can be used to create smooth workflows for support and sales teams.

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.

Toky is a fully-featured Business Phone System that allows customers and employees to communicate easily. All you need is an internet connection. Virtual phone numbers allow you to be available from anywhere in the world. Integrate your CRM with your business tools seamlessly so you can call customers with one click and automatically log all details. With proven reliability and affordable rates, you can take advantage of features like call recordings, voicemails SMS, Speech to Text, and voicemails.

Increase your efficiency by capturing an additional 40% of time through automatic time entries and post-call notes for each client interaction. Secure more placements and reduce the risk of disputes by automatically saving every conversation with candidates in your CRM and ATS. Streamline compliance and mitigate risks by recording your calls, allowing you to dedicate more time to client assistance. VXT provides adaptable solutions tailored for businesses prioritizing customer satisfaction. With VXT voicemail, you can create intelligent greetings for all your contacts, enhancing their experience with personalized messages. This cloud-based voicemail software allows you to access your messages from any device, anywhere. Additionally, you can record calls just like regular phone conversations, and these recordings can be transcribed directly into your notes for easy reference. This seamless integration of features ensures you stay organized and efficient in your communications.

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.

ClearLive serves as a comprehensive communications platform that integrates various services such as web conferencing, webinars, telephony, messaging, and digital phone offerings into a single, cohesive solution suitable for businesses, homes, government agencies, healthcare sectors, and individual users. Its primary goal is to facilitate connections among individuals regardless of their location, time, or preferred method of collaboration. The platform provides cloud-based video conferencing and virtual events, alongside unified communications and home digital phone services, allowing users to access meetings directly through their browsers without needing to download software, all while ensuring that meetings comply with HIPAA and GDPR standards. Notably, ClearLive prioritizes security with 128K encryption, alongside a commitment to network reliability, a robust infrastructure, advanced functionalities, and exceptional customer support. The suite of conferencing tools includes features such as HD video calls, screen and document sharing, file transfer capabilities, online whiteboarding, annotation options, meeting scheduling, summary generation, and intelligent search functionalities—catering to various user needs and enhancing the overall collaboration experience. This versatility makes ClearLive an appealing choice for anyone looking to streamline their communication efforts across multiple platforms.

Dialbird is a cutting-edge phone system for businesses that utilizes AI and VoIP technology to streamline communication for contemporary teams. As companies expand, their phone systems often struggle to keep up, leading to calls being scattered across personal devices, messages trapped in different applications, and reliance on memory for follow-ups. This disorganization can result in slower response times, missed chances, inadequate customer service, and ultimately, revenue loss. By employing Dialbird, teams can effectively enhance their response times, maintain alignment, automate their communication processes, and efficiently oversee follow-ups. Over 500 small and medium-sized enterprises, including various sales and support teams, clinics, and service-oriented businesses, have adopted this system for its structured approach that surpasses the capabilities of lighter phone applications without incurring the high costs or complications associated with traditional phone systems. The platform not only simplifies communication but also fosters a collaborative environment that can adapt to the changing needs of growing businesses.

RocketPhone serves as a comprehensive voice solution aimed at improving business communication by integrating effortlessly with Salesforce CRM. This platform boasts features like AI-driven call assistance in real time, automatic transcription of calls, and workflow automation to facilitate smoother operations and enrich customer engagement. It accommodates voice, cellular, and video communication, enabling teams to consolidate discussions across mobile devices, Salesforce, and web platforms. With advanced AI functionalities, RocketPhone identifies significant moments during calls, delivering in-call suggestions and automating tasks to enhance both sales and customer service productivity. Its pricing model is adaptable, featuring no minimum annual commitments, which allows it to grow alongside businesses while remaining accessible from any location with internet access. The platform is ideal for sales and service teams as well as management, aiming to secure more deals, elevate customer satisfaction, and enhance operational efficiency through real-time analytics and AI-powered insights. Furthermore, RocketPhone's user-friendly interface ensures that teams can easily navigate its features and maximize its benefits.

HyperDial is an all-encompassing AI-driven cloud telephony solution designed to enhance connection rates and convert more calls into profit. It integrates a worldwide database of local and toll-free numbers with features like local-presence dialing, automatic number rotation, and AI-driven number health monitoring to prevent carriers from marking numbers as spam. The platform employs predictive, auto, power, and parallel dialing methods to ensure representatives spend more time conversing rather than waiting, complemented by automated follow-ups, voicemail drops, call scheduling, and disposition management. A browser-based softphone utilizing WebRTC supports both inbound and outbound communications, providing advanced functionalities such as IVR, smart routing, call queues, forwarding, recording, transfers, and conferencing. Users can access real-time dashboards, alongside call, user, and number reporting tools, to monitor connect rates and evaluate team effectiveness. With built-in integrations for platforms like HubSpot, Salesforce, Zoho, Pipedrive, Freshdesk, Slack, and Zapier, as well as an open API and webhooks, every call is synced automatically. The system maintains compliance with GDPR regulations, offers encryption, and features role-based access from the outset, ensuring both security and ease of use for organizations. Ultimately, HyperDial not only streamlines communication but also empowers businesses to maximize their outreach and revenue potential.