2N Helios IP Force - Manual (Page 56)

56
2N TELEKOMUNIKACE a.s., www.2n.cz
®
4. Technical Parameters
Signalling protocol
SIP (UDP, TCP, TLS)
Buttons
Button design: Transparent, white backlit buttons with easily replaceable name
tags
Count of buttons: 1, 2 or 4
Numerical keypad: optional
Audio
Microphone: 2 integrated microphones
Amplifier: 10 W (class D)
Loudspeaker: 1 W (optionally 10 W)
Volume control: Adjustable with automatic adaptive mode
Full duplex: Yes (AEC)
Audio stream
Protocols: RTP/RTSP
Codecs: G.711, G.729
Camera
Sensor: 1/4'' colour CMOS
Resolution: 640 (H) × 480 (V)
Picture frequency: Up to 30 snaps/s
Sensitivity: 1.9 V/lux-sec (550 nm)
Viewing angle: 135° (H), 109° (V)
Infrared illumination: Yes