Ribbon Communications to Report First Quarter 2020 Financial Results on May 6, 2020

April 23, 2020

Westford, MA Ribbon Communications Inc. (Nasdaq: RBBN), a global provider of real time communications software and network solutions to service providers, enterprises, and critical infrastructure sectors, today announced that it will report financial results for the first quarter 2020 after the close of the market on Wednesday, May 6, 2020. Following the release, Ribbon Communications will host a conference call with the financial community at 4:30 p.m. ET to discuss the results.

The company will offer a live, listen-only webcast of the conference call via the investor section of its website at investors.ribboncommunications.com/press-and-events/events-and-presentations, where a replay will also be available shortly following the conference call.

Conference call details:

Date: Wednesday, May 6, 2020

Time: 4:30 p.m. ET

Dial-in number (Domestic): 877-407-2991

Dial-in number (International): 201-389-0925

Instant Telephone Access: Call me™

Replay information:

A telephone playback of the call will be available following the conference call until May 20, 2020 and can be accessed by calling 877-660-6853 or 201-612-7415 for international callers. The reservation number for the replay is 13702403.

About Ribbon

Ribbon Communications (Nasdaq: RBBN), which recently merged with ECI Telecom Group, delivers global communications software and network solutions to service providers, enterprises and critical infrastructure sectors. 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 IP solutions, UCaaS/ CPaaS cloud offers, leading-edge software security and analytics tools, as well as packet and optical networking leveraging ECI’s Elastic Network technology. To learn more about Ribbon visit rbbn.com and for more information about our packet and optical networking portfolio visit ecitele.com.

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