User Resilience

If the home system is not visible to its failover system for at least 3 minutes and IP desk phone resilience has begun.

The failover delay ensures that resilience is not invoked when it is not required, for example when the home system is simply being rebooted to complete configuration changes.

Hunt Group Resilience

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

Conference Resilience

Conference resilience occurs at the same time as IP desk phone failover.

IP Phone Resilience

If the home system is no longer visible to the failover system for at least 3 minutes, the failover system will allow IP phones to re-register with it. This requires at least one physical IP desk phone to trigger failover. Phones with existing calls using media connection preservation do not failover until that call ends.

Voicemail Resilience

Voicemail failover is automatically triggered by IP desk phone failover coming into operation. It can also be manually triggered through System Status Application using the Activate Backup Server button.

DECT Resilience

The master base station regularly polls its normal IP Office server, by default every 30 seconds. If that IP Office is not visible for some reason, then by default, after 2 minutes the master base station switches to using its failover IP Office system. These timings can be adjusted, see Configuring DECT Resilience.

DECT Master Resilience

The standby master regularly polls the active master. If the active master becomes invisible for some reason, the standby master automatically becomes the active master.

one-X Portal Resilience

The failover portal becomes active immediately the primary portal is stopped or not visible.