QUATTRO3 MT302 FEATURES:
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Four microphone beamforming array
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Full duplex communication
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Echo cancelling
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Noise suppression
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De‐reverb
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Automatic gain control
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Daisy chainable
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Single source daisy chain powering
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Bridging between USB and PSTN
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Internal battery
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Fully functional dial pad with backlit LCD screen
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Interchangeable interface modules
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Durable aluminum casing
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LED lit control buttons
COMES WITH:
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USB cable
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International power supply adaptor
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Daisy chain cable (Ethernet)
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PSTN phone cable
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Installed dial pad with backlit LCD screen
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Interchangeable wire slot cover
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User manual
The Quattro3 MT302 USB and Telephone connects via:
USB to your computer ‐ this connection is for any session using your computer, such as Voice Over IP applications (Vidyo, BlueJeans, FuzeBox, Skype, Microsoft Lync, etc.).
Telephone line – this connection is done via RJ11 connector and a telephone cable directly to your telephone infrastructure and is for any standard PSTN (analog phone) telephone call.

Connections
UBS interface (mini B connector)
3.5mm external loudspeaker and microphone jack
Volume Up / Volume Down buttons
Daisy chain expandability of up to 15 units
Power Consumption: 5V 500mA peak through USB and wall mount AC/DC converted.
Audio
Frequency Response 50Hz – 16 KHz
Low latency (10ms)
Broadcast level (peak): 92dB SPL @1m (5 watts RMS)
Three-way bridging capability
Noise cancellation > 10dB (without pumping noise)
100% full duplex – no attenuation (in either direction) during full duplex
High-end performance confirms to ITU-T G.167
Acoustic echo cancellation > 40dB with conversion speed of 40dB/sec
Residual echo is suppressed to the environment noise level, preventing artificial ducking of signal
4 high-quality directional microphones
Direction-finding algorithm (determines the presence and direction of a speaker)
Beamforming algorithm (forms and directs audio beams towards a defined direction
Automatic voice-level adjustment (AGC)
Dimensions
Dimension: 7” diameter, 1-7/8” height
Weight: 2 lbs
Metal case and metal grill mesh for high RFI immunity and product durability
Software
Plug-and-Play - No installation or drivers
Audio Setup Utility is available for Windows
The setup utility helps monitor the audio input and output level but is not required
Recording utility is available for Windows
Recording utility allows you to record conversations to your computer via the device
Operating systems: Windows 98 and up / Linux / MacOS
Battery
7 hours of battery talk time with secondary interface
Accessories
USB cable
International AC adapter
Daisy chain cable (Ethernet)
Telephone cable
Warranty
Two Years