Supports up to 2000 users and 200 SIP trunk accounts, up to 200 concurrent calls and up to 64 conference attendees 1GHz quad-core Cortex A9 processor 1GB DDR3 Ram, 32GB Flash 1 Integrated T1/E1/J1 interface, 2PSTN trunk FXO ports, 2 analog telephone/Fax FXS ports with lifeline capability Gigabit network ports with Integrates PoE, USB, SD card, integrated NAT router Comprehensive security protection using SRTP, TLS and HTTPS with hardware encryption accelerator Quickly setup and provision Grandstream endpoints using the Auto-Discovery and Zero Config feature within the product’s web user interface