Registrations are successfull since around 12:10 PM, connection seems healthy from our side but easybell status page still showes degraded telephony service.
We saw failing registrations (and therefore failing telephony) for all easybell accounts since around 9:45 AM. Issue seems on the easybell side, please also watch https://www.easybell.de/systemstatus/ for state information. (Same issue happend during night between 00:00 AM and 4:40 AM.