Ribbon and Cellusys LLC Partnership Drives Signaling, Roaming, and Security Innovation

Combined portfolio delivers full suite of signaling core for wireline, 3G, 4G and 5G markets

Plano, TX - November 26, 2024 - Ribbon Communications Inc. (Nasdaq: RBBN), which helps many of the world’s largest service providers, enterprises and critical infrastructure operators modernize and protect their networks with its state-of-the-art real time communications technology and IP optical networking solutions, today announced a partnership with Cellusys LLC to integrate the solutions and support of both companies’ SS7 and Diameter products, which will include enhancing Ribbon’s DSC and STP offerings with 5G and GTP features.

The integration and expansion of these products will deliver a comprehensive and  multigeneration solution for wireless and wireline markets. Both companies are committed to further collaboration to support service providers with robust signaling solutions that drive revenue and improve reliability.

“Cellusys has been a valued partner for over 15 years and we’ve executed many significant and successful joint customer engagements during that time,” said Sam Bucci, COO and EVP, Ribbon. “Collaborating in this new capacity will ensure continued development and outstanding support for these critical solutions.”

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.