The UDP module presents the ICE 8-byte sync.addr.port Header, SDDS Packet Header, and SDDS Data, to the IOC running IIS or IOS to strip off the header, interpret timecode, and unpack the data words for the proper tuner or module input. If the UOPT flag is included, the ICE and SDDS headers are not stripped off of the module data acquired by the host. They are always stripped off of the tuner input.