UCM6304 high-capacity IP PBX supports up to 2,000 users, 300 concurrent calls and 200 SIP trunks.

High-capacity IP PBX for large organizations supporting voice, video and unified communications. Supports up to 2,000 users, 300 concurrent calls and 200 SIP trunks. Four FXO and four FXS ports, three Gigabit ports with PoE+ and NAT, plus USB/SD. 1080p video conferences for up to 40 participants and audio conferences up to 150, with recording, Wave and Asterisk 16.