Intercoms & PA – GSC3506 v2 Product Description GSC3506 v2 Multicast Paging Speaker SIP paging, multicast paging, call-waiting One 10/100Mbps network port with PoE/ PoE+ 1x 3-pin differential line out port 1x 2-pin switch-in input port, 1x Alarm-in input port, 1x DC24V, 1x network, and 1x USB port See also different: Wi-Fi Cordless IP Phones – WP820 GXP Series IP Phones – GXP2130 v2 Unified Communications – GRP2616 Unified Communications – GRP2611G