Hi Jonathan,
Thank you for your feedback.
Gerald is correct you can see the list of call in the Call/Conversation Historical display. Also if you are troubleshooting a particular call in the Call Session Details page, you can click on the Edge Server Call History link it will then show you the list of Calls involving that particular edge server.
We are looking to provide the Edge Filter as permanent filter in the Conversation display in the future. Stay tune.
Regards,
Wong