• PSTN Line FXO Ports - 16
• Analog Telephone FXS Ports - Two (2), both with lifeline capability
• Concurrent Calls - Up to 60
• Conference Bridges - Up to 6, with 32 simultaneous PSTN or IP participants
• SIP Trunk Accounts - Up to 50
• Network Interfaces - Dual 10M/100M/1000M RJ45 Ethernet ports
• Peripheral Ports - USB, SD (up to 32GB)
• Quality of Service - Layer 3 QoS

A standalone Asterisk Open Source IP PBX appliance. Voice-over-Packet Capabilities include LEC with NLP Packetized Voice Protocol Unit, 128ms-tail-length carrier grade Line Echo Cancellation, Dynamic Jitter Buffer, and Modem detection and auto-switch to G.711. Multi-language support. Advanced security features built in firewall with SRTP/TLS encryption, 802.1X network security and HTTPS Web UI. No licensing or recurring fees. All hardware, software features, and functions included. Free lifetime firmware updates. Two (2) year manufacturer warranty. *Device can be powered via PoE.