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4. Technical Parameters
Signalling protocol
SIP (UDP, TCP, TLS)
Buttons
Button design: white-backlit transparent button with replaceable nametags
Button count: 1
Audio
Microphone: 1 integrated microphone
Amplifier: 2 W (class D) amplifier
Speaker: 2 W / 8 Ω
Sound pressure level (SPL max): 71 dB (for 1 kHz, distance 1 m)
Output LINE OUT: 1 VRMS / 600 Ω
Volume control: adjustable with automatic adaptive mode
Full duplex: yes (AEC)
Speech transmission index (STI): 0.89
Audio stream
Protocols: RTP / RTSP
Codecs: G.711, G.729, G.722, L16/16 kHz
2N TELEKOMUNIKACE a.s., www.2n.cz
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