-Easy to install 1' x 2' Drop-in Design - Aluminum construction - 2 year limited warranty - SIP compatible - Simultaneous SIP and multicast - Web-based configuration - Paging prioritization - Plenum-rated enclosure - Autoprovisioning - High efficiency speaker driver - Line-out connection - Network speaker volume control - Can drive one external analog speaker for greater coverage - User-uploadable ring and alert tones