Grandstream Networks UCM6204 Innovative IP PBX Appliance, 4x PSTN Line FXO Ports, 2x Analog Telephone FXS Ports, Optimized UC Features for SMBs, USB/SD, Wall Mount & Desktop, Support Up to 500 Users and 45 Concurrent Calls

UCM6204 is an innovative IP PBX appliance designed for small to medium business. Powered by an advanced hardware platform with robust system resources, the UCM6204 offers a highly versatile state-of-the-art Unified Communication (UC) solution for converged voice, video, data, fax and video surveillance application needs. Incorporating industry-leading features and performance, the UCM6204 offers quick setup, easy deployment and unrivaled reliability all at an unprecedented price point.