We are planning to deploy Lync2010 for our scattered offices across the globe except USA. We only need IM with Federation and Presence functionalities through Lync2010 in order to support our external customers. Also we want to interact our
existing CUCMs with Lync2010 using CUCILync.
Our concerns about the deployment are;
1) If those users in CA/LA and APAC could have good response time into Lync based in EMEA? How much bandwidth will at least be required to prevent intolerant latency.
2) If Lync2010 Enterprise Edition can be split between two defferent data centres that are geographically separated and provide us with geographical redundancy?
3) We have deployed a CUCM cluster for each country and wondering how many CUCM can be registered to one mediation server?
Many thanks in advance for any useful information.