As an Adtran registered partner we are excited to offer our small single site customers a fantastic VoIP solution. The Netvanta phone system has a builtin 24 port PoE switch, router, firewall and VPN concentrator. If you have a small business and are looking for a VoIP solution and also need a router and firewall then no other system can give you the value that the Netvanta can. Call us today so that we can discuss if the Adtran Netvanta is right for you.