This standard IEC 62676-2-1 shall introduce an IP network interface for devices in surveillance applications. In this part of the standard a network protocol is specified for the full interoperability of video devices. IEC 62676-1-1 and IEC 62676-1-2 specify the minimum network performance standards and general compliance to existing, well-known international network standards. On top of these basic layers protocols are defined to accomplish the full interoperability of video devices. In surveillance applications IP video devices have to use standardized protocols to accomplish following functionality: video streaming, stream control, event handling, discovery, capability description, device management, PTZ control, auxiliariesand other functions.