Resilience is supported in Linux-based networks. However, the use of resilience requires consideration of various capacity issues:
The total extensions/users on any single Primary, Secondary or Expansion must not be configured to exceed their supported limits under any circumstances.
Primary failure when Secondary present will route all non-local Expansion calls, Voicemail leave and collect, IVR and Auto Attendants to the Secondary
Primary failure when a secondary is present will move Hunt group processing and management access to the secondary. This will increase the management bandwidth between the secondary and any expansion systems.
Users whose extension or application fails over retain their existing user profiles rights without needing or consuming an licenses on the fallback server.
Any voicemail channel entitlements associated with the Primary, move to the Secondary on failover; no separate license provision on the fallback server is required – unless the dual active Voicemail Pro feature is enabled.
For further information, refer to the IP Office Resilience Overview manual.
