Intercoms & PA – GSC3510 Product Description GSC3510SIP Intercom Speaker & Mic Full-duplex speakerphone with HD acoustic chamber, advanced acoustic echo cancellation 3 directional mics Integrated Wi-Fi and Bluetooth ® One 10/100Mbps network port with PoE/ PoE+ 2-pin multi-purpose input See also different: Business Conferencing – GAC2570 IP PBX Solutions – UCM6300 & UCM6300A Series IP PBX Unified Communications – GRP2670 Unified Communications – GRP2602(P/W/G)