Skype for Business allows enterprises to deploy a Survivable Branch Appliance (SBA) at branch/remote offices that can switch to a stand-alone mode with limited functionality when the WAN link between the branch and the central site (which is usually corporate HQ) goes down. This page lists the steps needed to deploy Skype for Business SBA at a branch site along with the corresponding configurations needed at the central site.
The following steps are required when deploying the SBA for the first time.
To ensure the Lync SBA is running the latest Lync Server patches, administrators should install the latest Cumulative Update
To confirm that all the SBA services are running properly, check the status by Viewing ASM Operational Status.