adv.groupID

wrtc.adv.groupID is a string property containing a group call's unique group ID. Each group call shall have a unique group ID shared between all group call participants.

If you don't set it to anything a random ID will be applied when group call starts.

String containing group call's unique ID.

Usually you do not need to set wrtc.adv.groupID. If you however want to set it to a specific value you must do so before starting the group call, and you are not allowed to change wrtc.adv.groupID during the group call.