Topic Last Modified: 2012-09-21
If you want to provide branch-site resiliency, that is, high-availability Enterprise Voice service, you have three options for doing so:
Survivable Branch Appliance
Survivable Branch Server
A full Lync Server deployment at the branch site
This guide will help you evaluate which resiliency solution is best for your organization and, based on your resiliency solution, which PSTN-connectivity solution to use. It will also help you prepare to deploy the solution that you choose by describing prerequisites and other planning considerations.