What is the the PBXact Utility and why is it referenced in /etc/sysconfig/network-scripts/ifcfg-wlan0?

I was trying to figure out why in some cases my system seemed to think it was at a different IP address than it actually was (this had more to do with incorrect log entries than anything else), and I discovered that old incorrect information was stored in /etc/sysconfig/network-scripts/ifcfg-wlan0. But the first line of that file says,

#Configuration automatically generated via the PBXact Utility
#generated: Sat, 30 Jul 2011 15:38:51 -0400

Now that’s far enough back that it may have been at the initial install, but in any case, as far as I know I’m not running any PBXact Utility - am I? I went out on the edge and fixed the bad values despite the warning, but I’m wondering, is this a file that FreePBX is supposed to maintain, and if so, from where? Seems like at least that first line should be fixed to say something more applicable to FreePBX, if you’re re-using code from some other project or something.

Having a similar issue and saw the same warning and also wondering if the warning is valid. If so, where do I change the IP?

Sorry that should say sysadmin.

Network settings are controlled by sysadmin