How to change ip address and gateway on Wazo ?
If your are using a public address, I would start with the user interface: in Advanced -> sip_general_settings I would modify the Option Key “externip” to the new ip.
For the server part, it depend about your operating system, but usually for linux like systems, the network is configured in /etc/network/interfaces. The configuration of the gateway depends about the type of machine. When it comes to a VM with a public address, I prefer to define the gateway via the “post-up” rules.