Cisco TelePresence Administrator's Manual page 161

Clustering and peers
Example deployment
If, for example, you want to deploy a resilient cluster that can handle up to 750 concurrent non-traversal calls
and 250 concurrent traversal calls you could configure 4 peers as follows:
Non-traversal call licenses
Traversal call licenses
It would not matter to which peer an endpoint registers as the call licenses are shared across all of the peers.
If any one of the peers is temporarily taken out of service the full set of call licenses will remain available to
the entire cluster.
However, we recommend that, where possible, the number of licenses is configured evenly across all peers
in the cluster.
Cisco VCS Administrator Guide (X8.1.1)
Peer 1 Peer 2 Peer 3
250 250 250
100 100 50
License usage within a cluster
Peer 4 Total cluster
capacity
0 750
0 250
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