AVN-TB20AR 20 Button Advanced Talkback Intercom, AoIP GatewaynnThe AVN-TB20AR is a 2U rack-mount 20 button version of the AVN-TB10AR with the same specifications, but more station buttons allowing for increased communication for larger installations. It also has 'GPI/O' and 'Telephone' buttons for remote control of external equipment and Sonifex DHY-04 telephone hybrids, useful in an OB truck or a production gallery.nnCategory: Audio over IP Products.nnProduct Function: An advanced talkback/listen/call intercom unit to enable voice/audio communication between different areas in 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 capped talk buttons plus listen and call buttons.n- Telephone button for remote dialling and control of an external telephone hybrid.n- Group call button and talk facilities.n- Page button with page source display.n- Three user-definable buttons.n- Mute buttons for speaker and microphone.n- Mic and headphone inputs (front and rear headphone connection), headphone and speaker outputs.n- Front panel volume control which acts on speaker/headphones outputs and incoming source levels.n- +48V phantom power for mic inputs.n- Ethernet webserver and front panel control and configuration.n- Front panel display providing source and destination information.n- Sources from AoIP, 1 x balanced, 2 x unbalanced or S/PDIF digital inputs.n- Destinations to AoIP or rear panel balanced and unbalanced outputs.n- Advanced echo cancellation and mic AGC to prevent acoustic feedback.n- Dual 1Gb LAN ports and 1Gb SFP fibre port.n- 10 user-assignable GPIO ports.n- GPI/O 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 supply activity.n- Two front panel monitor buttons to route audio directly to the speaker, e.g. to take an IFB feed or off-air transmission signal.n- Input ducking or mixing to speaker/headphones.n- Dual AC and DC power supply inputs.n- Webserver softwarennEach AVN-TB talkback unit has a built-in webserver for configuration and setup. The webserver is responsive and scales to the size of your screen, meaning that it can be used on large monitors or small handheld devices like smartphones. Help information is shown on the right-hand side of the screen, so it's a good place to understand how the unit works.nnTalkback Intercoms Using Audio over IP, RAVENNA/AES67nnOur new range of AVN (Audio/Video/Network) talkback/listen/comment intercoms facilitates communication between studios, stages, theatres, offices and different areas within an installation or building complex. They have both 4-wire and AoIP sources and destinations, and use RAVENNA/AES67 as the audio transport mechanism, allowing simple CAT 5 cabling and easy expansion.