Genesys Cloud enables configuration of Google Cloud Text-to-Speech (TTS) custom voices through the integration settings. To implement custom voices, administrators must obtain voice name, location, region, model, and language parameters from Google Cloud, then navigate to Menu > IT and Integrations > Integrations, select the Google Cloud Text-to-Speech integration, and access the Configuration tab's Advanced section. Custom voice configuration requires JSON formatting in the Advanced Configuration field, with each voice entry specifying a displayName, model path (in the format projects/[ID]/locations/[region]/models/[model-ID]), and language code. The system supports multiple custom voices; single-voice implementations can omit additional voice sections. A notable limitation is that custom Google TTS voices are not currently supported within Google Dialogflow. This configuration process allows organizations to integrate branded or specialized voice options into their Genesys Cloud communication workflows.