1 Audio Input2 Audio Outputs (VIP-851-25)3 Audio Outputs (VIP-851-25/70/110)1 Form C Relay1 SIP identity for registering to a VoIP telephone systemPower over Ethernet 802.3at (PoE+) compatibleFront panel activity LEDFront panel PoE+ Fault indicatorFront panel Supervision Fault indicatorProvides line level audio for up to 40 Valcom one-way amplified speaker assembliesContact closure or VOX operation of audio inputRemovable screw terminal connectors provided for audio and relay interfacesAUX input music mutes during pageBarrel jack for optional DC power