The GSC3505 is a SIP loudspeaker that can be used for a variety of communication and security applications, e.g. in schools, hospitals and care facilities, offices, logistics or retail, etc. The robust housing contains an 8W HD loudspeaker, WLAN and Bluetooth interfaces, and the GSC3505 also enables SIP and multicast paging. In addition, unwanted calls are controlled, filtered and prioritized via configurable white and black lists. The GSC3505 can be seamlessly integrated into new or existing SIP communication environments; security and PA applications can be implemented easily and flexibly with this powerful SIP loudspeaker.