- Speaker with HD acoustic chamber- Features SIP paging multicast paging callwaiting with priority override- Full-band and wide-band audio codec support including Opus and G.722- 1x 3-Pin differential line out port- 1x 2-pin switch-in input port 1x Alarm-in input port one DC24V port vol+/- Key reset 1x network port 1x USB port- One 10/100Mbps network port with PoE/PoE+/PoE++