- Supports up to 1000 users and up to 120 concurrent calls - Zero configuration provisioning of Grandstream SIP endpoints - Built-in Instant Messaging (IM), Audio Conferencing & Web Meetings platform that supports access from computers, mobile devices, and SIP endpoints - Free Wave App allows easy voice & Instant Messaging (IM) communications using desktops, Web, and Android/ iOS devices - API available for third-party integrations, including CRM and PMS platforms - Advanced security protection with secure boot, unique certificate and random default password to protect calls and accounts - Three Gigabit auto-sensing RJ45 network ports with integrated PoE+ and support NAT router - Automated NAT firewall traversal service facilitates secure remote connections - Enhanced reliability with support for Hot Standby High Availability and local dual deployment - Supports Full-Band Opus voice codec,jitter resilience up to 50% packet loss - Compatible with GDMS for cloud setup, management and monitoring - Based on Asterisk* version 16 open source telephony operating system Maximum Concurrent Calls: 150 Number FXO Ports: 4 Number FXS Ports: 4 Wall or Rack Mountable: Wall Color: Gray