Call control VoIP is a hosted/cloud PBX solution. PBX's are often based on software, not hardware. A modern PBX is a central system with many features to control call routing, and it connects user devices to telephone networks (in the case of true VoIP, via the internet). An IP-PBX leverages the packet-based (IP) voice network to provide call control for intra-office users on the corporate LAN....