Let the "Enable Element Call as an additional calling option in this room" option also set the power level for io.element.call.encryption_keys

[ScuolaLaViadiLilith]

Your use case

Hello,

for some time now, we have decided to use private encrypted rooms in our Element space with modified roles and permissions. Specifically, we make it possible to send messages only to moderators, as well as being able to invite someone, and other things. We do the same with those who can initiate a video call with Element Call: a moderator can start it, anyone can enter it. The issue is that with custom rules configuration, Element Call video calls do not work! The moderator can initiate Element Call video calls, the room members enter the video call, but are neither audible nor visible. The moderator sees the members connected to the videocall, but it is not possible to talk to them. This only happens in encrypted, private rooms with non-standard permissions and roles! In our opinion, this is a glitch that does not make the video call function of Element Call production-ready.

At your disposal.

Have you considered any alternatives?

No response

Additional context

No response

[toger5]

We looked into the issue.
Our interpretation of:

we make it possible to send messages only to moderators

is:

we only make it possible for moderators to send messages (into the room)

If that is the case this issue is explainable.

• for sharing encryption keys we use (as of now) room events -> if the room is setup to not allow sending room events for a member they wont be able to share their key -> no-one will see their video feed.

There is a solution you can implement now and and a plan forwards that mitigates the issue:

• We are working on making the key sharing exclusively use toDevice messages which do not get controlled by the "send a room event power level"
• If you want this to be fixed now you can alter the power levels event manually to use a configuration that is more custom than what the UI exposes. (Do this only if you feel comfortable with it. Altering the events manually is at your own risk.)
  To change raw power level events you need to edit the state event manually. To do so type /devtools into the composer -> explore room state -> m.room.power_levels.
  The power level JSON has to be setup so that the events dictionary contains io.element.call.encryption_keys with a value of 0 (or what fits your need)

[toger5]

It would be expected that the "Enable Element Call as an additional calling option in this room" option will make calls work under any circumstances. Hence enabling the encryption events makes sense.