2N Helios IP Verso v1.1 - Manual (Page 103)

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2N TELEKOMUNIKACE a.s., www.2n.cz
®
4. Technical Parameters
Signalling protocol
SIP (UDP, TCP, TLS)
Buttons
Button design: White-backlit transparent buttons with replaceable nametags
Button count: 1 and increments of 5
Button extenders: Up to 30 modules, limited by power supply
Numeric keypad: Optional
Audio
Microphone: 1 integrated microphone
Amplifier: 2 W (class D) amplifier
Speaker: 2 W / 8 Ω
Output LINE OUT: 1 VRMS / 600 Ω
Volume control: Adjustable with automatic adaptive mode
Full duplex: Yes (AEC)
Audio stream
Protocols: RTP/RTSP
Codecs: G.711, G.729