BoFiNet Builds National DWDM Backbone Network with Ribbon's Advanced Solutions

Supports high-bandwidth connectivity for telecom and Internet service providers across Botswana

PLANO,Texas,July 27,2022 --Ribbon Communications Inc. (Nasdaq: RBBN),a global provider of real time communications technology and IP optical networking solutions to many of the world's largest service providers,enterprises,and critical infrastructure operators to modernize and protect their networks,today announced that it has been selected by BoFiNet,a wholesale provider of national and international telecommunications infrastructure,to upgrade and enhance its national backbone network across Botswana.

"Our backbone network is not only vital for service providers in Botswana,but also handles an enormous amount of international traffic,playing a crucial role in both Pan-African and global connectivity for the entire country," said Mpho Koolese,BoFiNet Technical Executive. "Ribbon's solution gives us the flexibility to provide our customers with the connectivity they need today,the resilience and reliability to guarantee those services,and the capacity to grow and modernize,supporting their needs both now and well into the future."

BoFiNet's backbone network,Botswana's largest,supports the company's mandate to provide a world-class telecommunications infrastructure to help drive connectivity and economic growth. More than 75 of the country's service providers connect to and rely on BoFiNet's network,which includes 10,600 kilometers (6,500 miles) of fibre covering more than 200 towns and villages.

Ribbon provided BoFiNet with a multi-terabit optical network that combines DWDM transport and OTN switching. Based on Ribbon's Apollo optical networking products,the solution gives BoFiNet a fully programmable optical network that supports multiple-routing resiliency and dynamic restoration across its pan-national optical transit network. The network boasts a capacity of 48 channels at 200G per channel with an easy path to upgrade to 400G as traffic demand increases.

"We've worked closely with BoFiNet to create the advanced solution that leverages the best of DWDM transport and OTN switching to meet their requirements," said Lior Tourgeman,Ribbon's VP Sales,Africa. "The enhanced capacity,flexibility and resiliency enables BoFiNet to support service providers with a broad variety of needs,as it continues to realize its vision to be a leader in the continent's digital transformation."

About Ribbon

Ribbon Communications (Nasdaq: RBBN) delivers communications software,IP and 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. We maintain a keen focus on our commitments to Environmental,Social and Governance (ESG) matters,offering an annual Sustainability Report to our stakeholders. To learn more about Ribbon,please 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 Contact

+1 (978) 614-8050

ir@rbbn.com

Media Contact

Catherine Berthier

+1 (646) 741-1974

cberthier@rbbn.com