With the Optional Upgrade Sequence feature, you can upgrade your core Communication Manager before you upgrade your Survivable Remote Servers, formerly known as Local Survivable Processors (LSP). This sequence of upgrading has a limitation of configurations not synchronizing between the upgraded core Communication Manager and yet-to-be-upgraded Survivable Remote servers (LSP).

Ensure to read the complete details of the Optional Upgrade Sequence feature before you implement this upgrade sequence. For more information, see Upgrading Avaya Aura® Communication Manager