AVN-TB20AD Advanced 20-Button Talkback Intercom, Desktop AoIP GatewaynnThe AVN-TB20AD is a desktop version of the AVN-TB20AR rack-mount intercom with a more compact format and elegantly angled front panel. It has the same features and connectivity *. n* Except for an additional headphone connector on the rear of the AVN-TB20AR.nnCategory: Audio over IP Products.nnProduct Function: An advanced talkback/listen/call intercom unit to enable voice/audio communication between different areas of an installation or building complex. nnTypical Applications: OB truck communications, theatre communications, inter-studio communications in a TV or radio station. nnFeatures:nn- 20 illuminated Talk buttons with keys, plus Listen and Call buttons.n- Phone button for remote dialling and control of an external telephone hybrid.n- Call button and group talk functions.n- Recall button with recall source display.n- Three user-definable buttons.n- Speaker and microphone mute buttons.n- Mic and headphone inputs, headphone and speaker outputs.n- Front panel volume control affecting speaker/headphone outputs and incoming source levels.n- +48V phantom power for mic inputs.n- Ethernet web server and front panel control & configuration.n- Front panel display providing source and destination information.n- Sources from AoIP, 1 x balanced input, 2 x unbalanced inputs or S/PDIF digital input.n- Destinations to AoIP or balanced and unbalanced outputs on the rear panel.n- Advanced echo cancellation and mic AGC to prevent acoustic feedback.n- Two 1Gb LAN ports and one 1Gb SFP fibre port.n- 10 user-assignable GPIO ports.n- GPIO button to trigger external events, via physical GPIO or network commands.n- Front panel LEDs for network audio presence, Talk activity, AGC activity, clock sync and power activity.n- Two front panel monitor buttons to route audio directly to the speaker, e.g. to pick up an IFB feed or off-air transmission signal.n- Input attenuation or mixing to speaker/headphone.n- Dual AC and DC power inputs.