We have numerous Partners that have successfully setup and are using Control Networks VoIP Services on the following IP PBX Systems:
3CX Phone System
3CX Phone System for Windows is a software-based IP PBX that replaces a proprietary hardware
PBX / PABX. 3CX’s IP PBX has been developed specifically for Microsoft Windows and is based on the SIP standard, making it easier to manage and allowing you to use any SIP phone (software or hardware).