Best Business Phone Systems in 2026

RingEX is the cloud business phone system sold by RingCentral, a US company led by its founder and chief executive Vlad Shmunis. RingCentral reported total revenue of US$2.515bn for 2025, up 5%, of which subscriptions accounted for US$2.427bn, making it one of the largest pure-play cloud communications vendors. RingEX combines calling, business SMS, team messaging and video meetings in one application, and is sold in three published tiers (Core, Advanced and Ultra) plus a quote-based AI Customer Engagement bundle. All tiers include unlimited domestic calling, call recording and video meetings for up to 300 participants; higher tiers add CRM integrations, multi-site administration, more toll-free minutes and real-time analytics. RingCentral has added several AI products around the phone system: an AI Virtual Assistant included in every tier, and a paid AI Receptionist that answers and routes calls, which the company said was used by more than 8,000 customers in early 2026. Customers that need a full contact centre can add RingCX, priced from US$65 per user. The main drawbacks are price relative to smaller rivals once add-ons are counted, monthly SMS allowances that are capped per user, and a free trial limited to a handful of users with SMS disabled.

Zoom Phone is the cloud PBX offered by Zoom Communications as part of its Zoom Workplace suite. It is sold in bundles that combine a US and Canada unlimited-calling phone licence with a Workplace meetings tier: the entry plan adds phone service to Workplace Basic, while Pro Plus and Business Plus bundle it with Zoom's paid meeting tiers. Unlimited calling covers the United States and Canada; Zoom says its public telephone network coverage spans more than 49 countries, international calls are metered, and customers can bring their own carrier. Every plan includes SMS and MMS, call recording and AI-generated post-call summaries and voicemail prioritisation; the Pro Plus and Business Plus bundles add unlimited AI note-taking, longer and larger meetings and, on Business Plus, single sign-on, managed domains and data-loss-prevention APIs. For buyers already paying for Zoom meetings, the incremental cost of phone service is low, and the same administrative console manages both. Limitations include that unlimited calling applies only to the US and Canada in the published bundles, online fax is capped at 50 pages a month on the base plan, and the free-tier meetings in the entry bundle are limited to 40 minutes.

Dialpad is a cloud communications company led by co-founder and chief executive Craig Walker, with co-founder Brian Peterson as chief technology officer; it says it has more than 30,000 customers and offices in cities including San Francisco, Austin, London and Tokyo. Dialpad Connect is its business phone and meetings product, positioned around artificial intelligence: real-time call transcription, voicemail transcription, instant call summaries and AI recaps are included from the entry tier rather than sold as add-ons. The Standard plan covers calls and meetings, Pro adds key CRM integrations and 24/7 support, and the quote-based Enterprise plan adds single sign-on, user access controls, unlimited office locations and a 99.9% uptime commitment. Dialpad offers local numbers in more than 50 countries. The same platform underpins Dialpad Support, a contact-centre product from US$89 per user, and Dialpad Sell for outbound sales teams, so a company can move groups of users to those tiers without changing vendor. Its limitations are that CRM integrations and round-the-clock support start only on the Pro plan, and the pricing page does not list separate monthly and annual figures.

Nextiva is a Scottsdale, Arizona-based provider of cloud communications that says more than 100,000 businesses use its services. Its current small-business line, branded NEXT, combines voice and video calling with business texting, shared inboxes, basic CRM and ticketing and a journey-builder for customer interactions, reflecting the company's attempt to blur the line between a phone system and a customer-experience platform. The entry NEXT Core plan includes unlimited voice and video, 100 business texts per user, skills-based routing and a fixed allowance of AI transcriptions and summaries; NEXT Engage adds live chat and a chatbot, toll-free minutes, single sign-on and virtual fax, and NEXT Scale removes most messaging and AI limits and adds supervisor monitoring. Nextiva also sells contact-centre plans from US$75 per agent and an AI agent product called XBert. Desk phones work with all plans but are bought separately. The page shows a large gap between annual and monthly prices on the Engage tier, and switching offers are described only in footnoted terms, so buyers should compare total contract cost carefully.

Teams Phone is Microsoft's cloud phone system, which adds public telephone network (PSTN) calling, auto attendants and call queues to the Microsoft Teams client on desktops, mobiles, certified desk phones and meeting-room devices. Each user needs a Teams Phone licence plus a PSTN connection, and Microsoft supports four ways to provide that connection: Microsoft Calling Plans, where Microsoft acts as the operator with a 99.999% service-level agreement; Operator Connect, using certified third-party carriers managed from the Teams admin centre; Teams Phone Mobile, which assigns a user's mobile SIM number as their Teams number; and Direct Routing, where the customer or a partner runs a session border controller to connect any carrier. Organisations can mix these options by site or user type. For companies already standardised on Microsoft 365, the advantage is that calling, chat, meetings and identity sit in one tenant and one client. The disadvantages are complexity—licences, calling plans and operator contracts are bought separately—and dependence on partners for features such as emergency calling and number porting outside Microsoft's Calling Plan countries. Microsoft's own price page could not be retrieved for this list, so prices are not quoted here.

8x8 is a publicly listed US provider of cloud communications that sells business phone, video meetings and contact-centre software on a single platform, together with communications APIs. For its fiscal year to 31 March 2026 it reported total revenue of US$735.8m, up 3%, with service revenue of US$715.3m; chief executive Samuel Wilson described the year as a turning point for the company. 8x8 said its communication APIs handled more than 5 billion digital interactions during the year. The company's pitch is that phone users and contact-centre agents share the same platform, routing and analytics, which suits organisations that run both a back office and a customer-service team. Its pricing page could not be retrieved for this article because it blocked automated access, and 8x8 directs buyers to sales for quotes, so prices are treated here as quote-based. Buyers comparing 8x8 should therefore request written quotes that state calling-zone coverage, contract length and the cost of contact-centre seats.

Ooma Office is the business phone service of Ooma, a publicly listed US company whose fiscal 2026 revenue (year to January 2026) was US$273.6m, up 7%, with subscription and services making up 92%; the company said its services power more than 2 million users. Ooma expanded its business-phone base in December 2025 by acquiring FluentStream and Phone.com, which contributed US$6.1m of revenue in the final quarter of the fiscal year. Ooma Office is aimed at small businesses: the Essentials plan includes unlimited calling within the US, Canada, Mexico and Puerto Rico, a virtual receptionist, a mobile app, one toll-free number and digital fax, and Ooma lists no contract requirement on its three self-service plans. The Pro tier adds a desktop app, texting, video meetings for up to 25 people and call recording, while Pro Plus adds AI transcription and insights, CRM integration, team chat, hot desking and call queuing. An Enterprise tier adds SIP trunking and Microsoft Teams integration. The service is less suited to large or international deployments, and taxes and regulatory fees are charged on top of the listed prices.

Aircall is a cloud phone system designed for sales and customer-support teams rather than for whole-company telephony. Its main selling point is its integration library: the Essentials plan includes more than 250 integrations with CRM, helpdesk and productivity tools, together with unlimited calls within the US and Canada, SMS and MMS, a shared inbox, call recording with AI transcripts, IVR and basic analytics. The Professional plan adds AI call summaries and conversation intelligence, smart routing with queue callback, a power dialer, outbound campaigns, call whispering and barge and full API access. Aircall also sells AI Voice Agents, which answer calls autonomously and are billed per minute, and a range of paid add-ons such as AI Assist Pro, WhatsApp and Analytics+. Every plan requires at least three licences, which makes Aircall less economical for very small businesses, and its published prices are for annual billing. Unlimited international calling is reserved for the quote-based Enterprise plan, which also adds SSO, SCIM and compliance commitments such as HIPAA.

Quo, formerly OpenPhone, is a business phone app aimed at small teams that want a shared business number on their own smartphones and computers. The company now presents itself as Quo, and its pricing page describes the service as "Quo (formerly OpenPhone)". Every plan includes one new or ported number per user, calling and messaging to US and Canadian numbers under a fair-use policy, voicemail transcripts, an API and an AI agent called Sona, which answers calls using automation credits. The Business plan adds AI call summaries and transcripts, group calling, call transfers, phone menus, HubSpot and Salesforce integrations, analytics and automatic call recording, while Scale adds AI call tagging, onboarding support and phone support. The product is simple to set up and inexpensive, and the seven-day trial can be cancelled at any time. It is less suitable for large organisations: there is no contact-centre tier, unlimited calling covers only the US and Canada, and phone support is available only on the top plan.

GoTo Connect is the cloud phone system of GoTo. It is sold through sales-led quotes rather than published prices; the pricing page presents five packages and asks buyers to contact sales or book a demo. The base Phone System package includes free calls to 50 countries, unlimited auto attendants and call queues, customisable dial plans, video meetings for up to 250 participants and 24/7 support. A second package adds an AI receptionist with 100 credits that answers calls around the clock, routes them and captures caller details; the Customer Experience package adds WhatsApp, social messaging, SMS campaigns, web chat, surveys, a team inbox, AI call summaries and integrations with ServiceNow and Zendesk; and a Contact Center package adds skills-based routing, an auto-dialer and agent monitoring. The breadth of free international calling is unusual among the systems in this list. The lack of published prices makes comparison harder, and GoTo notes that toll-free minutes, international calling and SMS availability vary by region.

Google Voice for business is a cloud phone service sold as an add-on to Google Workspace subscriptions, managed from the same admin console as Gmail and Google Calendar. It gives each user one number that rings across devices, with unlimited domestic calling and US texting in available markets, voicemail transcription, call recording, three-way calling, call transfers and support for desk phones and analogue adapters. The Starter tier is limited to ten users when bought with Workspace and is available in 14 countries; the Standard tier removes the user limit and adds multiple regional billing locations, call queuing for ring groups, auto attendants and eDiscovery for calls, voicemail and texts; Premier adds international billing locations, automatic call recording and advanced reporting through BigQuery. Google also sells a one-user US version of Starter. Google Voice is economical and simple for Workspace customers, but it offers fewer telephony features than dedicated systems: there is no built-in contact centre, no native CRM integration listed on the product page, and coverage is limited to the countries Google supports.

Vonage Business Communications is the cloud phone system of Vonage, which became a wholly owned subsidiary of Ericsson on 21 July 2022 and operates as a separate business area within the Ericsson Group, named Business Area Global Communications Platform. Besides its business phone plans, Vonage sells contact-centre software and communications APIs used by developers to add voice, messaging and video to their own applications. The phone system is sold in per-line plans for small and mid-sized businesses. Vonage's pricing pages blocked automated access when this list was compiled, so the prices and plan contents could not be verified and are not quoted here. Buyers should check whether promotional prices apply only to the first year and whether taxes and regulatory fees are added.

Grasshopper is a virtual phone system that gives small businesses a business number, extensions and call forwarding to existing mobile or landline phones, without desk phones or a full PBX. Its pricing page title advertises pricing starting at US$14 per month, and the service is available only in the United States and Canada. The product is designed for sole traders and very small teams who want to separate business and personal calls, present a professional greeting and route calls to colleagues. It lacks the contact-centre, analytics and AI features of the larger systems in this list, and its regional restriction rules it out for businesses with staff or customers outside North America. Detailed plan contents could not be retrieved for this article because the pricing page displayed only a region notice.