If you are using the Cisco Meeting App
If all participants are using Cisco Meeting Apps, the calls is always encrypted.
If some participants are using a video system, the call may be unencrypted.
To check, click and look under ENCRYPTION.
If any participants are unencrypted, they will be listed here.
If you are calling into a space using a video system that supports encryption
If any participants are unencrypted, you will see a padlock with a line through it in the video feed.
If you are calling into a space using a video system that doesn't support encryption
There is no indication as the call is always unencrypted in your end.