VALCOM VIP-804B ENHANCED NETWORK AUDIO PORT4 audio outputs or inputs4 form A relay contacts4 contact closure inputs4 SIP indentities for registering to a VoIP telephone systemRJ45 jack for network connectionFront panel activity LEDProvides audio for up to 40 Valcom oneway amplified speaker assemblies per zoneOutput control contact closure provided during paging outputContact closure or VOX operation of audio inputsVM186 RJ45 connector provided for audio and relay interfacePage with music output, music mutes during pageAUX audio input via RCA jackCompatible with 25 or 70 Volt amplifiers 2.5 mm jack for optional DC powerPower of Ethernet (PoE) 802.3 af compatible