IP Office Resilience

Last Updated : Nov 21, 2023 |

Resiliency refers to providing continued access to features during a failure of normal operation. This may occur due to an issue in the network such as the loss of a service, server, or network connection. The cause may be a temporary event, or it may indicate a more serious failure.

Important:

  • When the use of resilience features occurs, the priority must always be to resolve why resilient mode was invoked.

This document mainly covers the set of features supported in an IP Office network using Linux-based primary and secondary servers. These features are supported in IP Office Server Edition , IP Office Select and IP Office Subscription networks.

Definitions

  • Resilience:

    • The ability of a system to return to its normal state following a disturbance. It can also refer to the ability of the system to maintain some operation during the disturbance.

  • Failover:

    • The process whereby, if a server or service fails or is no longer accessible, another one takes over its operation.

  • Failback:

    • The process whereby, when an original server or service recovers or becomes accessible again, it resumes operation from any failover servers or services.

Related information
Resilience Features
When Does Failover Occur
When Does Failback Occur
System Configuration During Failover