Best Business VoIP Providers in Japan of 2025

3CX

3CX is a software-based, open standards IP PBX that offers complete Unified Communications, out of the box. Suitable for any business size or industry 3CX can accommodate every need; from mobility and status to advanced contact center features and more, at a fraction of the cost. Ideal for companies working remotely, 3CX includes mobile apps, video conferencing and website live chat. Installation, management and maintenance of the PBX is so easy that you can effortlessly manage it yourself, whether on an appliance or server at your premise on Windows, Linux or in the cloud. Alternatively you can choose to have it hosted by 3CX for a completely hassle-free solution.

1,168 Ratings

Starting Price: Free for up to 10 users

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ULTATEL

Ultatel stands at the forefront of business communications, empowering organizations with cutting-edge cloud VoIP technology to boost productivity and stay connected with customers anywhere, anytime. Our plans come fully scalable, featuring unlimited HD Voice, SMS, Fax, Chat, Video, and over 40 advanced features and integrations. Experience true transparency with our no-hidden-fees pricing model—what you see is exactly what you pay! Recognized as a Gartner Category Leader and G2 High Performer, Ultatel offers a unified communications platform that evolves with your business. Powered by our innovative FlexScale technology, you can effortlessly adjust your communication needs without any downtime or penalties. Our Award-Winning Customer Support team is here for you 24/7/365, delivering a remarkable 94% first-contact resolution rate. With Ultatel, enjoy the peace of mind that comes with being connected beyond limits.

100 Ratings

Starting Price: $14.95 per user per month

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CallTools

CallTools is a powerful Business VoIP solution built for high-volume sales and support teams. With a cloud-based infrastructure and enterprise-grade reliability, it delivers crystal-clear call quality, robust scalability, and the tools needed to drive conversations at scale. Manage both inbound and outbound calls from a single platform with smart queuing, IVR, and call routing. Our built-in CRM and real-time analytics help teams improve contact rates, close deals faster, and stay compliant. Easily connect with your favorite tools through native integrations and open API. Whether you’re managing a growing team or optimizing a contact center, CallTools simplifies operations and boosts performance with advanced call control, auto dialers, live monitoring, call recording, and more. Backed by U.S.-based support, CallTools empowers teams to make more meaningful connections and convert more leads with every call. Ideal for remote and hybrid teams looking for flexibility and results.

483 Ratings

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Insider Telecom

Get a business phone system without breaking the bank! We help small businesses in the United States get access to big business tools, while keeping prices within reach. In fact, with Insider Telecom, we provide the equipment as long as you need it. Enjoy features like caller ID, call forwarding, conference calling, intercom, auto attendant, and many more! No big upfront purchase for a complete business phone service. That's the Insider Telecom difference. Our support team knows that you probably don't speak "telephone." So they're trained to listen for and understand the root of your specific need - from training and configuration, all the way to fitting you with a different phone system. We want to be sure you're working with the right platform.

1 Rating

Starting Price: $17.95 per user per month

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T-Max Phone Systems

T-Max

The Hosted Business Phone System PBX will make any company sound and function like a Fortune 500 company. Your company can have all your calls answered by an auto-attendant allowing for callers to choose departments, extensions, dial by name or many other options. If you are working on the go you can have them automatically transferred to your cell phone. T-Max is fully geo-redundant. In other words, our servers are being hosted in a top-notch data centers throughout the United States. We use multiple carriers ensuring maximum connectivity to the PSTN. T-Max uses high-quality desk phones from Polycom & Yealink, with many different models to pick from to fit your unique environment best. We offer reception consoles, agent phones, wireless phones, and conference room phones. Our Hosted Business Phone System is the best choice for the price on the market today. 1-888-245-3483 Departments Extensions Digital Receptionist Voice Prompts Voice Mail Fax Service and Much More

Starting Price: $19.99 Mo/Ext

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CloudTalk

Searching for a smart call centre software? Try CloudTalk.io, a new-generation cloud phone system for SMEs, startups, online stores or call centers (sales and customer service teams). 25+ integrations with favorite CRM, helpdesk or e-commerce tools as Shopify, Salesforce, Pipedrive, Intercom at hand along with a 5-star rated customer success team make it easy to seamlessly migrate or set up your new cloud call centre from scratch. We are rapidly growing every month and we have already successful cooperation with 1000+ companies across the world like DHL, Yves Rocher or Karcher. Try 14 day FREE trial from CloudTalk (no credit card details required).

60 Ratings

Starting Price: $25.00/month (billed annually)

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Thirdlane

Thirdlane is a scalable UCaaS platform that blends multi-tenant PBX, Contact Center, and collaboration apps into one solution. MSPs, Enterprises, and telecom providers adopt Thirdlane when they want freedom of deployment, deep integrations, and reliable control over their communications stack. Whether your team prefers cloud-hosted services or on-premises deployments, Thirdlane adapts to your strategy. IT departments appreciate the API-first design, while business leaders value the ability to cut costs and avoid lock-in. Core benefits: - Enterprise-grade PBX with calling, video meetings, voicemail, and advanced routing. - Unified Thirdlane Connect apps for chat, video meetings, and file sharing. - Built-in Contact Center - Advanced analytics to improve service and sales. - CRM integration for context-rich customer interactions. - White-label branding across all user touchpoints. - Options for geo-redundancy and high availability.

29 Ratings

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Zoom Phone

Zoom Communications

The cloud phone solution, natively built for the Zoom platform. Enterprise-class features with a modern user experience to streamline voice communications. Provision and manage users, monitor call quality and usage data in the Zoom administrator portal. The globally distributed Zoom cloud platform delivers secure HD Voice with enterprise-class reliability and quality of service. Seamlessly make and receive phone calls, share content, participate in video meetings, and send chat messages from Zoom desktop and mobile apps. Easily elevate phone calls to a Zoom Meeting without requiring participants to hang up and dial-in to a separate conference bridge. Native apps for Windows, MacOS, iOS, and Android are designed for ease of use while maximizing voice and video quality of service. An ever-expanding footprint of countries to provide local phone numbers. For customers who wish to streamline global telephony carrier management, porting numbers to Zoom has never been easier.

22 Ratings

Starting Price: $14.99 per user per month

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Zadarma

Powerful Cloud Telephony for Global Businesses Zadarma offers a feature-rich VoIP platform designed for businesses that want flexibility, scalability, and professional communication without high costs. Set up your cloud PBX in minutes, manage international teams, and serve customers worldwide — all from a single interface. Key features: - Virtual phone numbers in 110+ countries - Free cloud PBX with IVR, call routing, and analytics - Integration with CRMs: HubSpot, Zoho, Bitrix24, and more - Apps for desktop, mobile, and browser-based calling - AI-powered voice agents and call tracking - Full control via web interface and API Ideal for remote teams, support centers, and growing companies looking to modernize their phone systems.

12 Ratings

Starting Price: $2/month

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PBXware

Bicom Systems

PBXware is the world’s first and most mature IP PBX Professional Open Standards Turnkey Telephony Platform. Since 2004, PBXware has deployed flexible, reliable, and scalable Next Generation Communication Systems and VoIP solutions to Small and Medium sized Businesses (SMBs), enterprises, Internet Telephony Service Providers (ITSPs), Call Centers and governments worldwide by combining the most advanced of the latest technologies. Bicom Systems’ softswitch is offered in the Business, Call Center and Multi-Tenant Editions, each supporting specific features maximizing performance, reliability, and expandability.

12 Ratings

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KrispCall

KrispCall helps you manage your personal, business, and corporate telephony requirements all from a single app (Web, Android, iOS). Get international numbers right from the comfort of your home. KrispCall helps you own national, toll-free, local, shortcode, and international numbers (for over 100 countries) in no time. Manage your call logs effortlessly. KrispCall’s unified callbox allows you to handle and monitor your business calls, recorded conversations, texts, and voicemails all from a single window. Earn trust of your international clients by calling them through their local numbers. KrispCall offers international phone numbers for your business at the most affordable price. With our embeddable widget, you are just a click away from your customers. Clients can now call you directly without hassles by simply clicking on the KrispCall’s widget embedded in your website.

10 Ratings

Starting Price: $15 per user per month

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Telnyx

See how the developer friendly Telnyx API can transform your business communications. Telnyx is an all-in-one communication platform designed to be tailored exactly to your needs. We created our network with real-time communications in mind so we can deliver quality calls, messaging, and data around the world. Easily build reliable messaging with our SMS API. Keep your data safe by setting up two-factor authentication using SMS or voice codes. Plug and play your VoIP setup in minutes and get carrier-grade voice with elastic SIP trunks. Our cloud-agnostic approach means you can rest easy knowing you are protecting in case of a network failure. With Telnyx deploy communications exactly to specifications.

8 Ratings

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VND PBX

VNDSOLUTIONS LIMITED

Our cloud-based hosted PBX gives you phone numbers so you can grow your business. Connect your SIP device or your current phone to our cloud PBX. Build complex calling dial-plans and enjoy features via our PBX portal. No contract with us and SAVE 70% from your current service provider. Use our business grade Hosted cloud PBX or SIP trunk service, tell us your needs and we will recommend you. Our VoIP solutions are designed specifically for businesses who want hassle free, reliable and extendable solution with no time. You enhance the features of your existing product by using our powerful Telephony API’s. Both Hosted PBX and SIP Trunking support API calls. Our robust & powerful API’s are very easy to integrate. We monitor our support lines 24/7 so give us a call or talk to our support team via live chat on our web (https://vndpbx.com). New Zealand: 0 9 8896552 (Auckland) U.S.A: +1 929 4809552 (New York)

3 Ratings

Starting Price: $11 per month

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Yodel.io

YodelTalk

The phone system for customer service teams. Yodel joins your team as a receptionist that pre-qualifies inbound voice communications and allows call management without switching tools. Collaborate on calls and enjoy the crystal clear voice quality through our battle-tested infrastructure. Get your phone system up and running in minutes. No complicated adoption from your previous business phone. Yodel integrates with over 1000 software tools so you can connect the phone with your existing workflows. Stay close to your customers no matter where they are by using Yodel’s access to phone numbers in over 100 countries. Yodel works with trusted local carriers to guarantee the best possible call quality. We deliver a reliant service uptime and a secure call infrastructure. Modern customer service teams need to deliver high quality support and ensure high customer satisfaction. Yodel removes everything that’s painful about phone systems and deliver what matters: the voice communication.

3 Ratings

Starting Price: $25.00 per user per month

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Genesys Cloud CX

Genesys

Genesys Cloud CX is a comprehensive, cloud-based contact center solution designed to deliver exceptional customer experiences across various communication channels. Built with scalability and flexibility in mind, it integrates voice, chat, email, social media, and messaging platforms into a unified interface. The platform leverages advanced AI and analytics to provide real-time insights, automate routine tasks, and personalize interactions, ensuring efficient and effective customer engagement. With its robust workforce management tools, businesses can optimize staffing and performance while maintaining high service standards. Genesys Cloud CX is designed for seamless deployment and adaptability, making it an ideal solution for organizations of all sizes looking to enhance their customer service capabilities.

3 Ratings

Starting Price: $75 per user per month

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Vonage Business

Vonage

Vonage Business is a leading cloud communications platform for businesses of all sizes and industries. Vonage Business covers all the communication needs of organizations looking to succeed, offering more than 40 business-critical features, mobility, conferencing, and integration with top cloud applications. Trusted by more than 500,000 business users, Vonage is available in a number of plans and packages that fit various business requirements.

3 Ratings

Starting Price: $19.99/month/user

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Aircall

Aircall is an AI-powered customer communications and intelligence platform that unifies phone, messaging, and call center operations. Designed for sales and support teams, it enhances every interaction with features like AI Voice Agents, real-time conversation coaching, and integrated WhatsApp messaging. With powerful analytics, call recording, and shared inboxes, teams gain clarity and can resolve customer issues faster. The platform is easy to set up, offering quick number claiming, seamless integrations, and customizable workflows. Trusted by over 21,000 companies worldwide, Aircall helps businesses improve connection rates, boost CSAT scores, and streamline onboarding. By combining automation with human-first AI, Aircall reduces busywork so teams can focus on building better customer relationships.

2 Ratings

Starting Price: $30/user/month

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Voyced

Hosted VoIP solution with a European focus but with presence in over a 165+ countries. As all our solutions are based on Premium Plus we give you the highest possible quality for the lowest price. All carry all types of numbers, from Geographic to National, TollFree and UIFN, Mobile VoIP, Elastic Pool solutions and much more. We also have our own SoftPhone and will soon be launching other Roaming products too.

2 Ratings

Starting Price: $0.25 per user per month

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Bria

CounterPath

Bria is a softphone solution designed to extend the capabilities of your call server, PBX, or VoIP service so you can take calls anywhere on both desktop and mobile devices, and augment your communications with team messaging, HD video conferencing and screen sharing capabilities, hosted by CounterPath. Experience crystal clear audio and HD, 1080p video calls whether in your office or on-the-go; and manage calls easily with intuitive call recording, music on hold, and call transfer functions. Need more collaboration features? Bria Teams and Bria Enterprise include team messaging, screen sharing, and HD video conferencing with up to 200 participants! Easily talk, chat, meet, and share on any device in one efficient app that syncs calling and messaging history across devices so you're always in the loop. Check out counterpath.com for more details!

1 Rating

Starting Price: $2.95/user/month

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Global Call Forwarding

Buy toll-free numbers and local phone numbers from more than 160 countries without commitment. You can route incoming calls to any phone, PBX, or SIP worldwide. Our global network has multiple layers of redundancy. Make international outbound calls and show any of your business phone numbers as Caller ID. Connect our SIP trunks to your phone system or use the GCF softphone to make outbound calls. Easily set up and modify smart call routing features like auto-attendant / IVR, location & time-based routing, local ringback tones, simultaneous ring, customized greetings, call recording, voicemail, and more. Easily add or remove virtual numbers, change calling plans, download your invoices and call detail records, modify advanced features, reach live technical support 24/7, and contact your account manager.

1 Rating

Starting Price: $7.95 per month

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AVOXI

The effective, affordable, and easy-to-use cloud-based call center software, AVOXI Genius. Easily manage your business communications from an intuitive, web-based contact center. AVOXI Genius is the first platform to integrate your contact center solution with your voice service, with virtual phone numbers available for instant activation in 170+ countries. With plans starting at $19.99 per user, AVOXI Genius is one of the most affordable solutions worldwide! Get 2 months free--limited time only.

1 Rating

Starting Price: $19.99/month/user

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Quo

Delightful and powerful business phone for professionals, teams, and companies. Quo (formerly OpenPhone) is the new phone for business. It comes with powerful calling, messaging, and a lightweight CRM. Works great for individuals and teams. It allows you to share a phone number with teammates, like an inbox. Available in the browser, iOS, and Android. Quo seamlessly adds a work phone number to your current devices. Want to be able to talk & text on all your devices? Yep, we've got it. But it doesn't end there. We've reimagined what a phone can do for professionals. Call and message anyone, anywhere in the world. Make cross-border communication easier. Create groups to communicate with multiple people at the same time and keep everyone on the same page. Turn phone numbers into dedicated inboxes and you can have as many as you want in one account. Record a call or set up auto-recording to record every call for you.

1 Rating

Starting Price: $10 per user per month

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Zoom Workplace

Zoom Communications

Unified business communication and collaboration tools. Reimagine how your teams work with an all-in-one, open collaboration platform with AI Companion. Streamline communication, improve productivity, optimize in-person time, and increase employee engagement, all with Zoom Workplace. Make meaningful connections with a unified solution for meetings, team chat, whiteboard, phone, and more. Reduce wasted time going back and forth between applications. Zoom Workplace provides you with a seamless, automated user experience from your mobile device or desktop Streamlined features give you the ability to initiate a call or meeting from a chat, collaborate on a whiteboard from your desktop or room, and see whether a co-worker is available with presence.

1 Rating

Starting Price: $13.32/user/month

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8x8

A single platform that combines cloud phone, video collaboration, team chat, contact center and analytics. Optimize your organization's total cost of ownership by giving each user the exact features needed for the job. Eliminate organizational silos with full analytics and collaboration between contact center agents and functional area experts. Single administration tool for system setup, with user and data management. Combine call, directory, video conferencing, chat and contact center in a single license. Connect your business around the globe with enterprise-grade reliability and quality in the cloud. Schedule, start or join HD video and audio conferences from any device or room with no friction. Easily access your contacts whether they are colleagues on the same account or an external user. Design better customer experiences with an intelligent, collaborative, and reliable solution.

1 Rating

Starting Price: $19.99 per month

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VoIP Office

VoIP Office, a leading provider of Cloud based communications, makes it affordable and easy to connect to anyone, anywhere in the world. Our communications solutions meet the needs of any type of business in any industry, from home offices to large enterprises. VOIP OFFICE is a new-generation cloud based communications provider that offers all the features of your traditional PBX along with the latest functionality enabled by the use of VoIP technology. VoIP Office integrates easily with your business applications, seamlessly integrating your desktop and your office into one interconnected system.

1 Rating

Starting Price: $24.95 per month plus taxes

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Yeastar Cloud PBX (legacy)

Yeastar

Yeastar Cloud PBX (legacy) is a fully-featured future-ready phone system ideally suited for SMBs. With Linkus UC Clients, you will gain easy access to enhanced call efficiency and remote working agility across any device at your choice. With 100% hosted deployment, there is no upfront hardware cost and the in-house management overheads are reduced to almost nothing. Together with easy to use and full compatibility features, any migration or upgrade to Yeastar’s hosted solution will be as easy as a breeze. * Please note that Yeastar P-Series PBX System is the new Yeastar Cloud PBX that comes with versatile call center features and unified communications features.

1 Rating

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PhoneSpeak

Your satisfaction is guaranteed, or your money back. You save thousands of dollars per year. No need to install, manage or maintain anything. Everything is in the cloud and instantaneous. Our data centers are hosted with Equinix, in case you don't recognize the name: They are one of the most expensive, reliable and secure providers with global footprint ensuring optimal call quality every time. Unlimited calling queues and hunt groups. Intelligent multi-level IVR capability lets you instantly route calls according to your unique business needs. Crystal clear HD call quality with all the bells and whistles. Call recording, call waiting, coivemail, HD voice quality, and everything else you want and expect from your phone service.

1 Rating

Starting Price: $ 9.99 per user per month

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Zoiper

Stop eavesdropping on your calls, encrypt your VoIP calls! Don't like it when people eavesdrop on your conversations? Neither do we, that's why we offer free encryption for all your text, voice and video communications with TLS/SRTP and ZRTP. Our VoIP softphone will look everywhere for your contacts and will display them in a combined list for easy access. Outlook, windows/mac, LDAP, XMPP, XCAP, Android, iOS. You name it, we got it and we will lookup incoming calls as well so you know who calls before you answer. Zoiper runs on a multitude of different platforms. No matter if you are using macOS, Linux or Windows. iOS, Android or a browser, we’ve got a solution for all (and we are working hard on addition even more). Ignore the buzzword above, it just means we do Audio, Video, Fax, Presence and Instant Messaging. All from one intuitive interface.

3 Ratings

Starting Price: $4.99/one-time

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LINE

Naver

Free Messaging Whenever, Wherever. Send free one-on-one and group texts to your friends anytime, anywhere! LINE is available for a variety of smartphone devices (iPhone, Android, Windows Phone, BlackBerry, and Nokia) and even your PC. Free Voice & Video Calls. Call friends and family as often as you want, for as long as you want. Free international voice and video calls make it easy to stay connected. Currently available for iPhone, iPad, Android, Windows Phone, PC (Windows and Mac), and LINE Lite on Android. Share exactly how you’re feeling by choosing from over 10,000 stickers and emoticons! Visit the Sticker Shop to discover original stickers of your favorite characters and celebrities. LINE NEWS is the most popular news content curation service in Asia and aims to deliver valuable content that enrich your everyday life. Receive medical consultations at home when you don't have time to visit a hospital or want to avoid the crowd.

3 Ratings

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EveryDay Voip

EveryDay Voip integrates phone, video, meetings and messaging in one easy to use reliable PBX solution. Our service has been designed to keep you connected with your clients, anywhere around the world, giving you the flexibility to operate your business, as you wish. Install our apps on your desktop, smartphone or tablet and experience HD-quality web, audio, and video, along with one-click functionality. Promote collaboration with team messaging, unlimited SMS, and more. Next-generation voice services that are truly scalable, easy to use, and secure. EveryDay Voip is a leading provider of international carrier services. With over 1000+ direct interconnects ranging from PTT’s and Mobile Network Operators to in-country VoIP suppliers, EveryDay Voip ensures best-in-class international wholesale solutions to any communication service provider worldwide. Bring to the table win-win survival strategies to ensure proactive domination.

2 Ratings

Starting Price: £3.50 per month

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Best Business VoIP Providers in Japan

Compare the Top Business VoIP Providers in Japan as of November 2025

What are Business VoIP Providers in Japan?