If it happens that the Date and time on the Gigaset T300/T500 is slowly changing to a wrong value, you should check if below procedure solves the problem. if this is not the Case, you need to create an RMA request. Make a SSH connection with the PBX. Delete NTP-Offset-File: [root@tel ~]# rm /etc/adjtime |
Now set the time manually via Admin-Webinterface Reset the Hardware-Clock: [root@tel ~]# hwclock --systohc |
Not set the time to NTP via Admin-Webinterface again |