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Hi @Haewon Park
To generate a VTC ID invitation in a meeting, you need to use a Cloud Video Interop (CVI) service. There are different partners that offer this service, such as Pexip, Cisco Webex, and BlueJeans. Depending on the partner you choose, you will need to follow different steps to set up and configure the service. The partner that you have chosen for your CVI deployment will provide you with a full deployment document (This configuration document is not provided by Microsoft) that consists of all the steps needed to deploy successfully within your organization. This will include firewall ports and IP ranges, configuration changes for your devices, and other settings that need to change.
About partners Certified for Microsoft Teams, you may refer to the article.
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