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Ribbon Communications sells the software and hardware that phone and internet providers use to connect calls and carry data, and it also makes secure communications tools for businesses.
Ribbon Communications is a plumbing company for the world's phone networks, except the pipes carry voices and data instead of water. When you call someone on a traditional phone line, or when a business connects its phone system to the public network, there is a good chance Ribbon's equipment and software sit somewhere in the middle, translating signals and routing the call to the right place.
The company has two main pieces. One sells to telecom carriers — the big phone and internet providers — who buy Ribbon's gear to run their networks and to shift from old copper-line phone technology to modern internet-based calling. The other piece sells to businesses and governments: software that lets employees make calls and message each other securely, plus tools that protect those communications. Ribbon also has a smaller arm that makes optical networking equipment, the gear that shoots data down fiber-optic cables. The business is a roll-up of older names. Ribbon as we know it today was formed when Sonus Networks, a maker of voice-calling equipment, bought GENBAND and took its name in 2017. It got bigger in 2020 by acquiring ECI Telecom, an optical networking company. That deal loaded the company with debt, and integrating a hardware-heavy business with a software one has been messy; the company has posted losses in recent years even as it pushed into newer products.
Ribbon's customers are mostly conservative network operators who don't switch suppliers quickly, which gives the company a sticky base but also limits fast growth. Its rivals include much larger equipment makers like Nokia and Cisco, and its push into secure business communications puts it up against Microsoft and others. The bet is that carriers will keep spending to modernize their networks and that businesses will pay for secure, easy-to-manage calling tools — a steady, unglamorous business that lives or dies on execution.
Saved answer · last researched 6 Nov 2026