The FortiVoice IP-PBX voice solutions are built for offices with up to 3000 phone users. FortiVoice systems give you total call control and sophisticated communication features for excellent customer service and efficient employee collaboration. Powerful, affordable and simple, FortiVoice phone systems include everything you need to handle calls professionally, control communication costs and stay connected everywhere. FVE-50E6 is suitable for up to 50 users and supports 6 telephone lines (FXO), 2 Analog Extensions (FXS), 2 Network Interface Cards (RJ45) and 16 concurrent calls.