I had this happen on my Webex calls for about two weeks, and then it stopped. I wasn't sure what finally fixed it, as I tried multiple fixes. Now I have a couple of other users reporting this to me. When calls come in they are not always at their desk, and it is ringing at full volume in a shared space.
The person had signed out of Webex, signed back into Webex, changed the volume settings for the ringer, saved it, and when the next call came through it was fine, but when the 2nd call came through, after signing out and in, saving the lower volume setting, and having one call come through, the volume was back up to 100%.
I had the end user open the health checker and reset her Webex app, forcing her to sign in again. I called her once her app was back up and running. The volume was where she had set it (about 30%). She just came over again and said that the next call after mine rang through at 100% volume again.
Are there other settings we are not thinking of?
If anyone can assist with making this volume setting stick and stop defaulting to 100%, there would be many happy and grateful end users and a support person to boot!
