Aircall Deleted the Desk Phone and Rebuilt It as Software

The office phone is one of those objects nobody thinks about until it fails. For decades it sat on the desk - a beige box with a cord, wired into a closet full of hardware that only one person in the building understood. In 2014, four founders working out of a startup studio in Paris looked at that closet and asked a small, slightly annoying question: why does any of this still exist? Their answer became Aircall, a company that took the business phone system, threw away the hardware, and rebuilt the whole thing as software you open in a browser tab.

More than a decade later, that bet has turned into a business used by over 23,000 companies in 110-plus countries, a valuation north of a billion dollars, and something like $175 million in annual recurring revenue. Aircall did not invent internet calling. What it did was make internet calling feel like a modern app - the kind of tool a five-person sales team can switch on in an afternoon without filing an IT ticket.

01 / The Overlooked IndustryPicking the boring problem on purpose

Aircall was born inside eFounders, a Paris startup studio (now called Hexa) that builds companies the way a workshop builds furniture. The studio acted almost as a sixth co-founder - it covered the team's minimum salaries for the first year and helped shape the idea. The founding group included Olivier Pailhes, who became CEO, Jonathan Anguelov, who ran growth and sales, Pierre-Baptiste Bechu, who built the early engineering, and Xavier Durand on the technical side.

The category they chose - business telephony - was not fashionable. It was old, unglamorous, and dominated by legacy vendors selling hardware and multi-week installations. That was precisely the appeal. As CEO Olivier Pailhes has described it, the opportunity was hiding in an overlooked industry that nobody wanted to modernize. The incumbents were happy charging for boxes. Aircall decided to charge for software instead.

"Green is the color of an incoming call." Aircall, on why its whole brand is built around one shade of green

The team shipped a minimum viable product, landed its first 100 customers, and in 2015 crossed the Atlantic for the 500 Startups accelerator in San Francisco. That trip set the tone: a French company that would grow up bilingual, with its center of gravity split between Paris and New York. Today the company runs on 800-plus employees drawn from 40 nationalities, spread across nine offices from Sydney to Mexico City - the kind of geographic sprawl that makes sense for a business whose product is, in the end, about connecting people who are not in the same room.

02 / The ProductWhat Aircall actually is

Strip away the marketing and Aircall is a cloud phone system. A business can create a local or toll-free number in more than 100 countries, set up how calls route through the team, and start taking calls on a laptop, a browser, or a mobile app - no desk phone required. On top of that sits the machinery that sales and support teams actually live in: interactive menus and call flows (branded Smartflows), ring groups, queuing with callback, call recording, voicemail transcription, shared inboxes, and warm transfers between colleagues.

For outbound sales, there is a Power Dialer that queues numbers automatically. For managers, there is call monitoring, whisper coaching, and a whisper-to-shout range of analytics dashboards that count call volume, missed calls, and response times. Insight Cards pull customer records from a connected CRM and drop them on screen the moment the phone rings, so a rep sees who is calling and why before saying hello.

The problems this solves are unglamorous but real. A traditional phone system meant capital expense, on-site installation, and a wait every time you opened an office in a new country. It meant sales reps re-typing call notes into a CRM, support agents guessing who was on the line, and managers with no visibility into why calls were being missed. Aircall's answer to each is the same: make it software, make it self-serve, and let the data flow where it already needs to go.

03 / The MoatTwo hundred and fifty ways to plug in

If there is one thing that keeps Aircall sticky, it is the app marketplace. The platform connects to more than 250 tools - Salesforce, HubSpot, Zendesk, Intercom, Shopify, Slack - so a phone call is never a standalone event. Ring a support line and the ticket updates itself. Take a sales call and it logs to the CRM without anyone typing. Answer an e-commerce query and the customer's order history appears on screen.

This is the quiet reason a smaller company can hold its own against much larger rivals. Aircall does not try to be the only tool a team uses. It tries to be the connective tissue between the tools they already have. That partnership work is deliberate - in 2025 the company was named a HubSpot Premier Partner and Co-Selling Partner of the Year.

The pitch was never "throw everything out." It was "keep your stack, and let the phone finally talk to it."

04 / The MoneyFrom $800K seed to unicorn

Aircall's funding history reads like a textbook SaaS climb. An $800,000 seed in 2015. An $8 million Series A led by Balderton Capital in 2016. A $29 million Series B, then a $65 million Series C as remote work sent demand for cloud phones through the roof. In June 2021 came the headline round: $120 million in Series D funding led by Goldman Sachs Asset Management, valuing the company above a billion dollars and putting it on the short list of French unicorns.

The business model behind those numbers is straightforward: per-seat SaaS subscriptions billed monthly or annually, with usage-based add-ons for numbers, minutes and, increasingly, AI. Aircall sells through a mix of self-serve signup, direct sales, and its partner ecosystem. By 2022 it had crossed $100 million in ARR - "Centaur" status in venture shorthand - and by 2025 it reported passing $175 million while still growing around 25 percent and staying profitable.

05 / The FieldWhere Aircall sits on the board

The cloud phone market is crowded. RingCentral and 8x8 come at it from the enterprise unified-communications angle. Dialpad leans on AI. Twilio sells the raw building blocks to developers. Talkdesk and Five9 chase the big contact centers. Aircall's spot on the board is the growing sales-and-support team - big enough to need real routing and analytics, small enough to want setup measured in minutes, not months.

06 / What's NextTeaching the phone to answer itself

The most interesting chapter is the one being written now. In April 2025 Aircall launched an AI Voice Agent - an always-on virtual receptionist that answers inbound calls around the clock, handles frequently asked questions, captures caller details, and hands off to a human when the conversation needs one. It followed with AI Messaging Agents that do the same for SMS and WhatsApp, and conversation-intelligence features that transcribe and summarize calls automatically.

There is a neat symmetry to it. Aircall spent its first decade digitizing the phone call. Now it is automating the parts of that call nobody enjoys - the 2 a.m. voicemail, the "what are your hours" question, the follow-up that never gets logged. The company that made the phone into software is teaching that software to pick up on its own.

Aircall spent a decade digitizing the phone. Now it's automating the parts of the call nobody enjoys.

For all the AI talk, the underlying wager has not changed since that closet full of hardware in Paris. Aircall bet that voice still matters - that when a deal is on the line or a customer is upset, people still want to talk - and that the tool for talking deserved to be as good as the rest of the modern software stack. Judging by 23,000 customers and counting, it turns out a lot of businesses agree.