i have a Voip-Telekom Connection for Internet and Telephone. System Configuration is
Draytek-Modem <-> IPFire <-> Fritzbox. I configured the Fritzbox to use the existing Internet Connection. My dect-telephones (Fritzphone) are connected to my fritzbox. In the past, there was no problem with calls (and I have no special Firewall-Rules/Port Forwarding configurations in my ipfire. Since the last Update(s) (141 or 142) I have a call interrupt after ca. 15 minutes. Do I need a special firewall configuration ord port forwardings now? If yes, could you tell me exactly what i have to configure?
Thank you for your support in advance.