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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Community Phone

Calling made modern. Your business number. Your employees' phones. Our amazing features. A dial menu spoken by our voice actors. Callers press numbers to make purchases, hear MP3s, connect to specific staff, and more. Make and answer calls using your number on multiple phones without the caller ever knowing. Employees hear secret in-house menus, transfer calls, and send voicemails to their email, all from their dialpad. These business features require no new software or hardware. Your dialpad come to life. Porting your business or personal number at the press of a button. Select from our menu of modern voice features for your business or personal line. We'll activate these features on your current phone for you. No work (or learning) required from you. We'll be here to transform your number whenever your desires change.

1,019 Ratings

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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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Signalmash

Why work with giants like Twilio where your support requests will take forever to get a response? Signalmash is not just a CPaaS provider, we take pride in providing the best possible CPaaS support. Your developers can have a shared Slack channel with our developers for instant support. You can speak to our CEO anytime. Real-time and top-notch support means shorter development cycles and enables you to provide exceptional support to your own customers. SMS services we offer: SMS API SMS CPaaS SMS UCaaS SMS no-code sending platform 10DLC campaign support Short code SMS Toll-free SMS Voice services we offer: Contact center telecoms Voice termination Voice orgination Local numbers Short code numbers Toll-free numbers SIP Trunking Our No-code telecoms solutions: UCaaS to send SMS CCaaS to manage phone calls AI solutions Signalmash - experience the highest level of support, every step of the way - book a call with us to get expert advice!

1 Rating

Starting Price: $0

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Kixie PowerCall & SMS

Kixie

Kixie is a revenue engagement platform that helps teams connect faster, sell smarter, and scale efficiently with AI-driven automation and seamless CRM integration. ✔️ Outbound Sales: Increase connection rates by up to 400% with AI-powered Local Presence Dialing, Multi-Line PowerDialer, and Spam Risk Reduction. ✔️ Marketing: Automate calls and texts for instant follow-ups and personalized, scalable outreach. ✔️ Inbound Sales & CS: Streamline workflows with CRM-based call routing, shared SMS inboxes, and automated responses. ✔️ RevOps & Leadership: Optimize team performance with AI-powered call insights, live coaching, and real-time analytics. 🚀 Boost productivity and revenue with Kixie. Visit our website to get started for free today, no credit card required!

13 Ratings

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UniTalk

UniTalk provides a wide range of services in the field of telecommunications for business, including IP telephony and virtual PBX, call tracking, recording telephone conversations, callback buttons and widgets for the site, various types of telephone calls and routing, and much more.

11 Ratings

Starting Price: $35/month

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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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Infinite Connect

One unified platform to run your entire business remotely. Improve productivity and simplify your communications with reliable voice, video, fax, conferencing and messaging in the cloud. Flexible unified cloud communications and contact center services designed, for small and medium sized businesses. Customize your settings and capabilities to have your conference calls work the way you want. Up to 100 callers included. In place of your traditional small business phone system, our VoIP phone system or hosted PBX uses your broadband connection to make communicating easier. From small meetings to large webinars, broadcast HD video, enable integrated teleconferencing and share your desktop with ease. No downloads required. Send and receive SMS & MMS text messages online and manage internet faxing from your dashboard. Infinite provides the most up to date VoIP Phones that arrive fully configured with plug and play functionality. All you have to do is turn on your phone and start talking.

Starting Price: $22.50 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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Dialpad Connect

Dialpad

Dialpad Connect is an AI-powered unified communications platform that combines voice, video, and messaging to enhance team collaboration and customer interactions. It features real-time call transcription, automated call summaries, and AI-generated action items to help users stay focused during conversations. The platform integrates seamlessly with popular business apps like Salesforce, Zendesk, Microsoft Teams, and Google Workspace to streamline workflows. Designed for businesses of all sizes, Dialpad Connect delivers enterprise-grade reliability with 100% uptime SLA and robust disaster recovery. Security and privacy are core priorities, meeting standards like GDPR, HIPAA, and SOC 2 compliance. Dialpad Connect helps companies elevate customer experiences while boosting team productivity.

18 Ratings

Starting Price: $15 user/month

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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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Google Voice

Google

Stay connected, organized, and on task with an easy-to-use phone solution that fits organizations of any size. Voice makes work calls less work. Make and receive phone calls using a work number on any device, anywhere. Start communicating more effectively. Voice can be customized to fit your day-to-day workflow. Number assignment, porting, and billing are neatly consolidated in the familiar G Suite Admin console. Google's powerful AI filters spam calls, transcribes voicemail automatically, and lets you configure your PBX. Integrations with Hangouts Meet and Calendar keep the focus on what's important. Voice can be deployed instantly — and globally — from anywhere, with less administrative work. Focus on what's important while staying connected on deskphones, smartphones, and the web.

7 Ratings

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Cisco Webex Calling

Cisco

A complete business phone service, in the cloud. Webex Calling gives you a phone service in the cloud so you can make and receive calls on any device, anywhere—all without the overhead and hassle of managing it. A business phone service built for your growing business. Take calls with your business phone number from anywhere, on any device, with a full set of powerful cloud calling features. Forget the costly overhead of a physical business phone system, and easily manage all your services, users, and security in one place. Webex Calling has security built-in as a key foundational element without requiring settings to be updated to stay protected. Make calls with extension numbers, direct inward dialing (DID) numbers, directory URIs (email-style addresses), or directory-based dialing. Never miss an important call with features like shared lines, hunt groups, call waiting, hold/resume, pickup, forward, do not disturb and transfer.

5 Ratings

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DID Global

DID Global is a telecommunications partner for your business, providing communication and data services based on VOIP services and other small and wide spectrum technologies. Our services are chosen when they want to provide their business with rapid scaling, reduced advertising costs and increased sales. We operate in more than 150+ countries around the world offering the best conditions for our customers. Our services - VOIP telephony - PBX - Virtual (DID) numbers - SIP Trunk - SPAM checker - SMS service mailing All your customer communication solution in one place. Scale up and open the world to your business with DID Global.

4 Ratings

Starting Price: $10/users

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ConneXio

The simple, smart, efficient & all-in-one UCaaS, Customer Engagement & Workforce Management Platform. ConneXio is The Future of Customer Engagement and Workforce Management Software - AI & Voice Recognition IVRs - Omni-Channel IVRs - Voicemail and Call Menu Builder - VoIP Phones - CRM - UCaaS / CCaaS - Dialer - BPO & Outsourcing Transform your Customer Experience (CX) with ConneXio Cloud's Suite of Business Tools. Create the exact solution you need to engage customers at every step of their journey on their preferred channels – anywhere in the world! Provide a white-glove, VIP service so convenient and proactive, your customers will think you can read minds! Contextual Data, AI & Machine Learning, Flexible Workflows and Seamless Cross-Channel Communications empower your teams to engage people in powerful new ways. Featuring ways to make your job easier; - Real-time Analytics & Reporting - Custom-Tailored - AI & Machine Learning - Industry-Leading VoIP Network

3 Ratings

Starting Price: $29.99

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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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CallHippo

CallHippo is a modern Contact Center Tool that helps you connect with your customers. CallHippo is easy-to-use while offering robust functionality with advanced features, extensive reporting, and seamless integrations to empower sales and service teams to have effective conversations with customers. Providing World-Class support 24*7 and Accessible by desktop and mobile-app, CallHippo is trusted by over 5000 companies worldwide.

3 Ratings

Starting Price: $18.00/month/user

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Calilio

Calilio is a AI powered cloud phone system that simplifies business communication by offering virtual phone numbers in over 100 countries. Launched in 2023, it prioritizes user-friendliness with a simple, intuitive dashboard and application. Calilio's unified callbox allows users to text, call, send voicemails, chat, and share images from a single window, eliminating the need to switch between multiple apps. Standard Plans start at just $15/month (or $12 annually) for features like a web/app dialer, call filters, history, blocking, and forwarding. Premium plan start at $35/month(or $28 annually) and Enterprise plans offer additional features with customizable pricing. Calilio integrates AI-powered call monitoring and evaluation features. Sentiment analysis helps understand customer satisfaction, while call summaries and transcriptions simplify reviewing call details and outcomes.

5 Ratings

Starting Price: $15 Per user/per month

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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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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?