High Definition video interface - HDCVI
HDCVI system - it is Dahua Technology patented technology that has no analogues. Only HDCVI allow to transfer Video, Audio (Microphone) and remote control (as PTZ camera control) in one coaxial cable (RG59, RG6U). You can use a UTP cable to transmit a signal using Video baluns.
Dahua Technology has p2p services that allow use internet with Dynamic or Virtual IP addresses, just switch on p2p and use Serial Number and Username with password to live view and remote playback connection.