Issue generated from Tuleap's migration script. Originally submitted by: Olivier SOLDANO (osoldano)

The new LRC api provides no control on simultaneous concurrent calls.
Let's illustrate this: when in call, receiving another call triggers a signal that allows to display a new incoming call view. However when refusing or ending the second call there is no exposition of the other calls still active, and this is problematic in a multi-account context.
LRC should expose at least an account based active calls registry; this approach makes the most sense to me, in the current state of the api (one call model per account).