Description 1
<Definition> Indicates the CRC-16 (polynomial defined in ISO/IEC 3309) value created using the values of the dmsMessageMultiString (MULTI-Message), the dmsMessageBeacon, and the dmsMessagePixelService objects in the order listed, not including the OER type or length fields. For messages of the 'blank' message type, the above algorithm shall be ignored and the dmsMessageCRC value shall always be zero (0). For messages of the 'schedule' message type, the CRC value of the currently scheduled message shall always be returned (regardless whether this message is actually being displayed). <Informative> Prior to NTCIP 1203 v04, dmsMessageBeacon and dmsMessagePixelService could be interpretted as being optional to support. In this case, the calculated CRC assumed the value zero for the missing data. Starting with v04, all implementations are required to support these objects, even if they do not support the related functionality. <Parameter Type> Status <Object Identifier> 1.3.6.1.4.1.1206.4.2.3.5.8.1.5