The reference to the instance of the data source that is feeding the input stream. For the Connection Type 'udp' this object contains the pointer to the UDP Origination table that the input Stream is using. Below is an example of the value expected for a Connection Type 'udp'. An input stream (mpegInputTSIndex = 8) is being feed by a udp Connection (mpegInputUdpOriginationIndex = 4) have associated 3 udp streams each one identified by mpegInputUdpOriginationId = 1,2,3. The Udp stream 3 is currently used by the input transport stream. mpegInputTSEntry TSIndex ConnectionType ActiveConnection 1 1 <any> 2 1 <any> ... 8 1 mpegInputUdpOriginationIfIndex.4.3 9 2 <any> MpegInputUdpOriginationEntry UdpOriginationIndex UdpOriginationId 3 1,4,5 4 1,2,3 ... Note in the example that the sub oid 4 (in mpegInputUdpOriginationIfIndex.4.3) represents the sub-oid that aggregates all the udp origination flows associated with the transport stream.