The actual trace identifier accepted. This object is applicable only to the sink function, i.e., only when tnOthOdukDirectionality has the value sink(1) or bidirectional(3). It must not be instantiated in rows where tnOthOdukDirectionality has the value source(2). The value of this object is unspecified when tnOthOdukTtpCurrentStatus indicates a near-end defect (i.e., oci(0), lck(1), ssf(5)) that prevents extraction of the trace message. It consists of the following three parts: - RXSAPI is the fist 16 octets (TTI[0]-TTI[15]) - RXDAPI is the second 16 octets (TTI[16]-TTI[31]) - RXOS (operator specific) is the last 32 octets (TTI[32]-TTI[63]) TTI[0] (i.e., SAPI[0]) and TTI[16] (i.e., DAPI[0]) shall be fixed to all 0s.