Colt Deploys Ribbon's Microsoft-Certified Session Border Controllers to Power its New Intelligent Communications Offering

Ribbon's cloud-based SBCs combine with Colt's voice and data networks to deliver enterprises a complete,secure Microsoft Teams communications experience

PLANO,Texas,May 12,2022 --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 Colt Technology Serviceshas deployed Ribbon's Microsoft-certified Session Border Controllers (SBCs) as part of its new Colt Intelligent Communications (CIC) with Cloud Session Border Controller offering across Japan.

CICis an enterprise solution integrating the power of Microsoft's cloud productivity applications with Colt's voice and data networks to securely deliver superior collaboration experiences and business communications services. Colt's offering provides employees,regardless of where they choose to work,access to Microsoft's rich communications tools,including the ability to make business phone calls on both their desktop and mobile clients.

Ribbon has one of the most extensive portfolios of Microsoft-certified SBCs on the market,including highly-scalable,software-based solutions that are architected for cloud-based deployments. Colt is leveraging Ribbon's cloud-based SBCs to offer organizations an alternative to traditional on-premises SBC hardware and traditional fixed-line connectivity that is typically deployed to provide telecom services to Microsoft Teams.

With CIC,migrating phone calls to Microsoft Teams can be as simple typing an IP address into a web page. Colt's extensive voice and data footprint,delivered from the cloud,offers superior bandwidth and secure voice communications from almost anywhere.

"A secure cloud communication and collaboration solution is a fundamental component of digital transformation for companies of all sizes," said Masato Hoshino,Colt's President and Head of Asia. "CIC and Cloud SBC enable organizations both large and small to benefit from the highest-quality cloud voice experience for Microsoft Teams,without the need to invest in additional hardware and software,and the skills to manage them."

Hoshino added,"Colt's latest investment in its Intelligent Communications offering in Japan makes the migration to Microsoft Teams quick and simple for our customers and the flexibility and agility it delivers will continue to underpin their business objectives in the region long into the future."

CIC enables greater agility for enterprises of any size. With no physical hardware,provisioning and onboarding takes dramatically less time. It also provides flexibility,offering per usage pricing to allow small and medium enterprises to accelerate digital transformation.

"The latest Colt Intelligent Communications offering perfectly highlights the increased global migration of business communications to cloud-based services," said Tony Scarfo,EVP & General Manager of Ribbon's Cloud & Edge Business Unit. "Colt continues to be a leader in delivering world-class technology services to their customers. We are delighted that they have selected Ribbon's proven technology to help migrate their enterprise customers to Microsoft Phone System services."

Colt's voice and network solutions are underpinned by the Colt IQ Network,which is comprised of more than 29,000 buildings and 900 data centers globally. CIC is currently available across 14 key countries including Austria,Belgium,Denmark,France,Germany,Ireland,Italy,The Netherlands,Portugal,Spain,Sweden,Switzerland,United Kingdom,and Japan. For more information,please visit colt.net/product/intelligent-communications.

Ribbon's Microsoft-certified SBCs,required to connect to Microsoft Teams,also enable secure voice connections anywhere in the world. In addition to Colt,Ribbon SBCs are deployed in the networks of and trusted by many of the world's largest communications providers.

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 of Ribbon's products and services,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,Ribbon Communications specifically disclaims any obligation to do so.

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