Topic Last Modified: 2014-03-31

If you want to use an Audio Conferencing Provider (ACP) in your hybrid deployment, you need to configure federation between your on-premises Lync deployment and the ACP partner as an Allowed Partner Server. You can configure federation by adding the ACP partner domain and Edge server (this may also be called the Access Proxy) to the Federated Domains list for your on-premises deployment. The ACP partner then needs to add the FQDN of your on-premises Edge Server pool to their allowed federated domains list.