Dahua master station SIP protocol

specs
    Embedded processor
    Embedded Linux operating system
    10 ”color LCD screen (1024x600)
    Capacitive touch screen
    2 mechanical buttons
    Audio compression G.711a, G.711u, PCM
    2 audio inputs
    Incorporates microphone and hands-free speaker
    Full Duplex audio communication
    Echo suppression and cancellation and digital noise reduction
    Fully digital communication
    Screen division: all 4 channels 720P can be displayed on the screen in 4 sections
    MicroSD card slot up to 64GB (card not included)
    RJ45 100 / 1000Mbps network interface, self-adaptive
    Network protocols: IPv4, SIP, RTSP, RTP, TCP, UDP
    1 HDMI port
    Power supply: 12V DC, 2A (adapter included)
    Maximum consumption: ≤24W
    Operating altitude: 0 ~ 1300 meters
    Operating temperature: -10 ° C ~ + 55 ° C
    Relative humidity: 5% ~ 90% (non-condensing)
    Not suitable for outdoors
    Polycarbonate and ABS plastic shell
    Dimensions: 345 x 224.6 x 28 mm
    Weight: 2.5 kg