Best Business Phone Systems for Slack

Dialpad offers a modern business phone solution that eliminates the need for conventional desk phones by utilizing a cloud-driven platform compatible with any device. This allows teams to enjoy high-quality voice calls, send SMS and MMS messages, and take advantage of sophisticated functionalities such as call routing, voicemail transcription, and AI-driven insights, all integrated into a single cohesive system.

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.

CallTools offers a contemporary Business Phone System that emphasizes adaptability, clarity, and user control. Whether your workforce is working remotely, in the office, or operating in a hybrid model, our completely cloud-based solution provides all the necessary tools to oversee business communications in one centralized location. Effortlessly direct incoming calls with IVR and sophisticated queues, while your outbound teams can take advantage of intelligent dialing and caller ID techniques to enhance engagement. Our built-in features, including call recording, voicemail, and live monitoring, ensure both quality assurance and compliance. Additionally, with an integrated CRM, comprehensive call logs, and customizable statuses, handling customer interactions has never been easier. CallTools seamlessly connects with your current technology ecosystem and scales effortlessly with your team’s growth. With outstanding audio quality, dependable uptime, and support based in the U.S., this platform serves as more than just a phone system—it’s a driving force for productivity focused on sales, service, and success. Equip your team to connect, close deals, and provide support—all from one robust platform.

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.

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.

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.

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 -

net2phone is a leading Unified Communications provider offering innovative and affordable cloud based telephony services in the US and worldwide. With an embedded Voice over IP experience at the core, 30+ years of on-going innovation, and an ever expanding global presence, net2phone is one of the fastest growing providers in the industry. Our cloud-based, unified communications and contact center solutions help businesses around the globe succeed by interacting with their consumers with enhanced intelligence and insights.

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.

Aircall transforms business communications with an intelligent, cloud-based phone system built for modern sales and customer support. More than just a calling tool, it provides an all-in-one hub that connects phone, SMS, and WhatsApp conversations in a single platform. Its AI Assist Pro feature delivers real-time coaching during calls and simplifies follow-up, enabling reps to sell smarter and resolve support issues faster. Teams can leverage advanced capabilities like call routing, IVR, analytics dashboards, and power dialers to maximize efficiency. With integrations across Salesforce, HubSpot, Zendesk, Intercom, Shopify, and 100+ other apps, Aircall seamlessly fits into existing workflows. Businesses benefit from reliable call quality, international number coverage, and scalable features that grow with their needs. Customer stories highlight improvements such as a 4% increase in CSAT scores and the ability to process 25,000+ calls per month with stability and ease. Aircall makes customer conversations more personal, productive, and impactful—without the complexity of traditional systems.

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.

dialnote is a VoIP phone system built for teams tired of paying $40–80 per seat to legacy carriers. Get a VoIP phone number, local, toll-free, or international, or port your existing business phone number for free, then add unlimited users on a flat plan with no per-seat surprises at scale. AI voice agents handle inbound calls 24/7 with transcription, summarization, and intent extraction in 15+ languages. Each agent runs against a configurable knowledge base, so it can answer FAQs, capture leads, take detailed messages, transfer high-value calls, and trigger downstream actions without human intervention. Smart IVR routing, shared inboxes, group calling, warm transfers, business-hours rules, and call queueing keep distributed teams in sync on shared numbers. The platform is API-first. REST endpoints and webhooks expose calls, messages, transcripts, contacts, and call events, so engineering teams can pipe data into Salesforce, HubSpot, Zendesk, Slack, custom dashboards, ticketing systems, or any workflow automation platform. Two-way CRM sync logs every interaction without manual entry; AI call summaries, auto-tagging, and call evaluations come through as structured fields, not just transcript dumps. Setup takes minutes, numbers provision instantly and porting is handled free of charge. Includes unlimited US/Canada calling, zone-based international rates, automatic call recording, real-time analytics, and native iOS/Android apps. Plans from $49/month with a 10-day trial, no credit card required. Built for SMBs, MSPs, dev teams, and ops folks who want a programmable VoIP phone number without carrier lock-in or per-user pricing that scales with headcount instead of revenue.

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.

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.

Quicktalk is a compact call center solution designed specifically for small enterprises. It enables business owners and startups to seamlessly establish phone support and handle customer communications from any device. Users can select a dedicated phone number for their business or retain an existing one, configure an auto-attendant with options such as personalized greetings, operational hours, call routing, and company announcements, all while enjoying unlimited calling capabilities. Additionally, Quicktalk harnesses advanced call center functionalities, including call recording, cascading calls, real-time call monitoring, and comprehensive call analytics tailored for smaller businesses. This software empowers entrepreneurs to enhance their customer service and streamline their communication processes effectively.