 PLANO, Texas, Oct. 14, 2021 PRNewswire -- 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 employees from all over the world will have the option to participate in the companys annual Global Day of Service Ribbon Day, during the week of October 17 th. Ribbon and all of our predecessor companies have a very strong history of volunteerism and supporting the communities in which we live and work, said Petrena Ferguson, Senior Vice President of Human Resources for Ribbon. 