The new CyberData SIP IP66 Outdoor Horn provides an easy method for implementing a loud IP-based overhead paging system for loud areas, warehouses, manufacturing areas, and outdoor areas. Now with up to 9 user-stored messages. The interface is compatible with most SIP-based IP PBX servers that comply with the SIP RFC 3261. For non-SIP environments, the speaker can be configured to listen to multicast address and port number combinations to form paging zones. _DELETE_