Deploying Unified Communications Manager to geographically diverse sites adds a number of challenges not experienced in single-site deployments. The primary new challenges are:
- Bandwidth usage and call quality over WAN links
- Availability during WAN outages
- Call routing to the PSTN, especially for emergency numbers
- Potential for overlapping dial plans
After the cut, we will take a brief look at each of these issues, and some ways to to overcome them.