Certified virtual PBX training video – an explanation of the use of Ring Groups, and how to implement them in CompletePBX 5.
Complete online VoIP certification for free – virtual PBX training.
Download and install free virtual PBX software to complete the course.
Xorcom software PBX and appliances for hotels, enterprise, schools, call centers, free for download. Asterisk-based VoIP PBX.