The CyberData SIP Speaker is the latest in IP technology. This Power over Ethernet (PoE 802.3af/802.3at) VoIP mass notification device has network-controlled speaker volume, simultaneous SIP and priority-based Multicast streaming, and integrates with both the CyberData Wall Mount and the CyberData Wall Mount Clock Kit. The speaker is compatible with most SIP-based IP PBX. In a non SiP environment, the speaker is capable of broadcasting audio through Multicast. Its small footprint and low height allows the speaker to be discreetly mounted almost anywhere.