- Built-in IP PBX provides voice and video communications with advanced collaboration features (PBX Upgrade options available)-12 users and 4 concurrent calls by default- Built-in firewall provides anti-virus layer 3-7 IDS/IPS DPI SSL detection and more- Built-in VPN router supports 2.5Gbps or 3Gbps to allow easy remote access - Built-in network switch with 10 Gigabit ports 4x PoE out ports and 2x 2.5 SFP ports- Easily configure deploy and manage all Grandstream endpoints from one interface- Provide