Ribbon Communications Inc. announced the expansion of its ongoing relationship with Bandwidth. Ribbon's STIR/SHAKEN solution, part of its comprehensive Ribbon Call Trust portfolio, is designed to fulfill the requirements for caller identity authentication, signing, and verification, as defined by French law as part of the MAN (Mcanisme d'Authentification des Numros) Project conducted by French telecommunications regulator ARCEP. Bandwidth is also deploying a three-node, geographically redundant Secure Telephony Identity (STI) solution to ensure reliable delivery of the STIR/SHAKEN functions mandated for the French market.