Separate IPs for freepbx web UI and asterisk server

I have a setup in the lab where I need to use an IP for the listening asterisk server different than the one used for freepbx management (via web ui). can someone suggest what is the way to go about it? If there is any related documentation that someone can point me to, I would very much appreciate it.

Answering my own question…
found out asterisk listens on all active interfaces. So, I was able to get the calls switch through the interface that I wanted.