We have PBXact Commercial version with which Zulu comes already bundled up. We want to use Zulu UC on internal network only - we don’t have any remote working concept. By adding LetsEncrypt certificate, we can make calls from internet but that is not required. When we try to connect Zulu on internal network by providing the IP address of the server, Zulu give SSL certificate error. Although the LetsEncrypt certificate is working fine.
But Zulu is not working on internal network. What do I have to do?