RBBN - Ribbon Communications Inc. (RBBN) Q3 2020 Earnings Call Transcript October, 30 2020 02:01 AM Ribbon Communications Inc. Image source: The Motley Fool. Ribbon Communications Inc. (NASDAQ: RBBN) Q3 2020 Earnings Call Oct 29, 2020 , 4:30 p.m. ET Operator Continue reading For further details see: Ribbon Communications Inc. (RBBN) Q3 2020 Earnings Call Transcript