miniSIPServer is a professional cross-platform SIP-PBX for Windows, Linux (Ubuntu, Debian) systems and Raspberry Pi. It could be the most easy-to-use VoIP server software you will have and provides lots of enterprise communication services.
If you are new to VoIP, don't warry. Please refer to our step by step document to build a simple VoIP network in only one hour!
If you don't want to maintain any PC or server, please try our virtual SIP-PBX. You can run miniSIPServer in cloud!