I would like to implement a simple multisite IP telephony over the WAN/internet, with single call management at the main office. We run a CCM cluster, version 4.1.3
What I would like to implement is exactly what is shown on figure 2.2 on the following link:
Our network at the main office runs with 10.X.X.X unroutable addresses, and the branch office has one public IP address, with a very high bandwidth link (100Mbps).
I would like some config examples for the routers needed at the main office and at the branch office to support the IP Telephony. If there is a complete example, including CCM config to support the branch office, that would be even more appreciated.