As your Sametime network grows, you may want to consider adding other Sametime components, clustering, or load balancing. Or your intranet at large may change and you may need to reconfigure Sametime to work with a DMZ or different proxy server. We have provided some resources here that we think might be helpful.
Leased-line example with Bandwidth Manager:
Cloud-based example with Bandwidth Manager:
DMZ and Sametime Meeting Servers: