Remote Connectivity Tool to test OCS Edge Server
Found a useful on-line tool that you can use to test remote connectivity to Edge server. The tool is still going through beta testing but does a pretty good job already. They are planning to enhance the tool to perform a deeper level of diagnostic and provide more detailed troubleshooting.
The site https://www.testocsconnectivity.com/default.aspx where the tool resides is owned by Microsoft Corporation.