This is a complete and modular system for the management of your network, from security issues to business communications (VOIP PBX, FAX, VPN, FIREWALL, ADDRESSBOOK). NBLADE applies a graphic interface (web) user to simplify configuration and management, with the upgrades via internet that that allow the system to have real time updates about security and technological improvements for your services. It's freeware with 5 users and unlimited voip provider. You can receive fax and nblade send it to your email address. A complete ivr system is included, with voicemail and many other function to controll you inbound/ outbound call. It can set up access controll list to dial.