February 9, 2022, Plano, TX – Ribbon Communications Inc. (Nasdaq: RBBN), a global provider of real time communications software and IP optical networking solutions to service providers, enterprises, and critical infrastructure sectors, today announced that NamPower, Namibia's largest power utility, has deployed Ribbon's IP Optical portfolio for its "The GridOnline" project. The GridOnline provides a comprehensive backbone for operators across the country to leverage high-capacity bandwidth reliably, both domestically and internationally.

"This is a significant project, not just for us, but more so for Namibia as a whole, providing expanded access to fast, reliable bandwidth to carriers and wholesale providers," said Helgo Müller, NamPower's Head of Telecom and Control. "Strategically, when it comes to communications infrastructure, NamPower, and therefore Namibia as a country, plays an important role for the entire southern African region, having direct backbone reach across the nation, to submarine optic cables and to neighboring land-locked countries. As such, the responsibilities of and expectations put towards NamPower are of a critical and compelling nature. Having worked with Ribbon for almost a decade, we were confident in their ability to deliver the technical solutions and, more importantly, provide the associated service and assistance requirements. We were not disappointed. In fact, the Ribbon and NamPower teams were able to deploy the network, including its auxiliary facets, amidst and despite tight pandemic-related restrictions, an impressive accomplishment which we all can be proud of."

NamPower required a solution offering extensive programmable IP optical capabilities to leverage its utility network for bandwidth delivery. Fully implemented in 2021, the network combines Ribbon's 400G ZR+ and 200G coherent Apollo Optical Transport solutions with Neptune IP over DWDM. The Muse interactive network planning tool enables NamPower to carry out offline network planning and simulations to optimize use of resources.

"NamPower is a flagship customer for us on the African continent and we have long considered them a partner for growth," said Lior Tourgeman, Ribbon's VP Sales, Africa. "I am delighted to see that the network we have nurtured over the past decade has now evolved into a multi-terabit network equipped with rich capabilities of DWDM, IP, OTN and intuitive management. This significant step toward network modernization is helping to usher NamPower into the era of IP Optical networking and establish it as a key player for bandwidth delivery services."

About Ribbon
Ribbon Communications (Nasdaq: RBBN) delivers communications software, IPand optical networking solutions to service providers, enterprises and critical infrastructure sectors globally. We engage deeply with our customers, helping them modernize their networks for improved competitive positioning and business outcomes in today's smart, always-on and data-hungry world. Our innovative, end-to-end solutions portfolio delivers unparalleled scale, performance, and agility, including core to edge software-centric solutions, cloud-native offers, leading-edge security and analytics tools, along with IP and optical networking solutions for 5G. To learn more about Ribbon visit rbbn.com.

Important Information Regarding Forward-Looking Statements

The information in this release contains forward-looking statements regarding future events that involve risks and uncertainties. All statements other than statements of historical facts contained in this release, including those regarding the expected benefits from use of Ribbon Communication's products, are forward-looking statements. The actual results of Ribbon Communications may differ materially from those contemplated by the forward-looking statements. For further information regarding risks and uncertainties associated with Ribbon Communications' business, please refer to the "Risk Factors" section of Ribbon Communications' most recent annual or quarterly report filed with the SEC. Any forward-looking statements represent Ribbon Communications' views only as of the date on which such statement is made and should not be relied upon as representing Ribbon Communications' views as of any subsequent date. While Ribbon Communications may elect to update forward-looking statements at some point, Ribbon Communications specifically disclaims any obligation to do so.

Investor Relations

Tom Berry
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Dennis Watson
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