Can an E-SBC protect an Enterprise network when deploying Cloud phones?

FreeSBC will protect your enterprise network when you use cloud phone system. Please check the following link for hosted IPPBX configuration.https://docs.telcobridges.com/tbwiki/FreeSBC:Hosted_PBX. In the link, it shows how to configure FreeSBC on service provider network. But it can be used on the enterprise network with the same configuration steps.