Genesys Cloud CX Voice is an internet-based telephony service that can be purchased and activated for use with Genesys Cloud CX. Genesys Cloud CX Voice provides a fully managed phone system that connects your phone devices with Genesys Cloud CX cloud services. With Genesys Cloud CX Voice, you do not need to configure or maintain any external trunks or telephony infrastructure. Reference: https://help.mypurecloud.com/articles/about-genesys-cloud-voice/ https://help.mypurecloud.com/articles/activate-genesys-cloud-voice/