Ribbon Displays Agile, Open and Automated IP Optical Solutions at MPLS SD & AI Net World Congress

Flexible,high-performance offer supports service providers' need for increased network ROI

PLANO,Texas,April 18,2023 -- 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 help protect their networks today announced that it is exhibiting its advanced IP Optical solutions at MPLS SD & AI NET 2023.

"Our customers are facing network challenges every day and we look forward to demonstrating how our agile,automated and open solutions help them address these issues and maximize their networks' value and capabilities," said Sam Bucci,Chief Operating Officer from Ribbon. "We'll also be sharing the results of our participation in EANTC's annual MPLS SDN interoperability test,designed to help create a truly interoperable ecosystem that helps service providers retain operational flexibility."

Join Ribbon in Booth 311 for:

A live IP Wave demo highlighting our latest automation,IP routing and optical networking innovations.

Our state of the art automated Musemulti-layer orchestrator,which seamlessly integrates our IP routing and performance-optimized Apollo optical networking solutions to make IP Optical convergence a reality.

Ribbon's IP Wave rNOS, a proven network operating system that operates on our latest generation of high-performanceNPT XDR routers to provide the performance,features and capabilities required for converged multiservice,multiaccess aggregation and transport.

The latest addition to our routing portfolio,the NPT 2032, a SONiC distribution-based data center switch which can be offered in disaggregated or fully integrated form.

Ribbon's David Stokes,Head of IP Solutions and IP Portfolio Marketing,will give a presentation on "Is Disaggregation Getting Real?" on April 20th. Book a meeting to discuss your network challenges and how Ribbon can help you address them here.

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.comMedia Contact

Catherine Berthier

+1 (646) 741-1974

cberthier@rbbn.com