User Resilience

After the home system has been visible again for more than 10 minutes.

The failback delay helps ensures that the home system has fully recovered and is stable before starting failback.

Hunt Group Resilience

Hunt group failback occurs at the same time as IP desk phone failback.

IP Phone Resilience

After the home system has been visible again for more than 10 minutes, any idle phones begin to re-register with the home system. If for some reason, a phone is unable to connect to the home system, there is a 5-minute grace period, where the phone can be logged in to either the home or failover system. This is called "homeless prevention".

Automatic failback to the home system is the default mode. For H323 IP phones, manual failback can be selected. In manual mode, the phone does not failback until either logged out or rebooted.

Conference Resilience

System conference failback occurs at the same time as IP desk phone failback. Existing active system conferences continue on the secondary, but new conferences start on the primary.

Voicemail Resilience

After the server is available again, failback occurs once all active voicemail calls have ended, and server SMTP synchronization is completed. However, manual failback or failback after a set time can be configured. Manual failback in control using System Status Application.

DECT Resilience

When the original IP Office system returns to normal operation, by default DECT control is automatically returned to it. The operation can be set to manual control if necessary, see Configuring DECT Resilience. In that case, control of failback is through the System Status Application.

DECT Master Resilience

When the active master is available again, it resumes control, and the other base station returns to being the standby master.

one-X Portal Resilience

The secondary portal returns control to the primary portal once it is available or visible again.