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Amazon.com : Polycom Vortex EF2280 Multi-channel, …
https://www.amazon.com/Polycom-Vortex-EF2280-Multi-channel-cancelation/dp/B00008PXBJ
Amazon.com : Polycom Vortex EF2280 Multi-channel, AEC, Noise cancelation with auto mic mix : Audio Conferencing Equipment : Office Products
Polycom Vortex EF2280 - Unified Communications
https://www.unifiedcommunications.com/documents/pdf/ds_vortex_ef2280.pdf
The Vortex EF2280 improves audio quality for conferencing, distance learning, and other installed applications through industry-leading acoustic echo and noise cancellation - with support for up to 8 microphones. The Vortex EF2280 automatically mixes microphones and other audio sources while cancelling acoustic echoes and annoying background noise.
Vortex EF2280 Reference Manual - tzmc.us
https://www.tzmc.us/audio/vortex/vortex_ef2280_reference_manual.pdf
About the EF2280The EF2280 is a 12-input, 12-output, 8-channel acoustic echo and noise can- celler with matrix mixing and automatic microphone mixing capabilities. It includes a total of 12 analog inputs (8 mic/line level inputs and 4 line level inputs), 12 analog outputs, and 4 digital expansion busses.
Vortex EF2280 Programming Guide - Polycom
https://support.polycom.com/content/dam/polycom-support/products/voice/vortex/setup-maintenance/en/vortex-ef2280-programming-guide.pdf
This document describes the command protocol that is used to communicate with the Vortex EF2280 via its RS-232 port. 2. RS-232 Hardware The communication between the Vortex and a host controller is conducted via the RS-232 port on the back panel of the Vortex. The Vortex's RS-232 port operates at the following settings:
Vortex Ef2280 Applications and Presets Guide - …
https://support.polycom.com/content/dam/polycom-support/products/voice/vortex/user/en/vortex-ef2280-applications-presets.pdf
To link multiple Vortex devices together, use the submatrix on the EF Bus. The EF Bus The EF Bus is a high speed, low delay digital bus that includes the W, X, Y, and Z audio busses as well as the echo canceller reference and remote control information (for other Vortexes) and can link up to 8 Vortex devices. All busses include NOM
Polycom EF2280 Integrated Automatic Mic / Matrix Mixer
https://www.clarybusinessmachines.com/polycom-ef2280-integrated-automatic-mic-matrix-mixer.html
Polycom EF2280 Integrated Automatic Mic / Matrix Mixer with Echo and Noise Cancellation Click To Enlarge Add to Comparison Complete all-in-one solution for audio and video conferencing, distance learning, courtrooms 12 inputs, 12 outputs, 8 microphone/line input channels 25 x 18 Matrix mixer with user-adjustable cross point gains
Polycom Vortex EF2280 8-channel Audio Mixer | eBay
https://www.ebay.com/itm/124259158519
The Polycom Vortex EF2280 allows you to experience the legendary Polycom voice clarity in any size room. The Polycom Vortex EF2280 is an 8-Channel mixer for use with up to eight microphones of your choice.
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