The actual trace identifier accepted. This object is applicable only to the following three cases. (i) tnOthOdukDirectionality has the value bidirectional(3), or (ii) tnOthOdukDirectionality has the value sink(1) and tnOthOdukTCodirectional has the value true(1), or (iii) tnOthOdukDirectionality has the value source(3) and tnOthOdukTCodirectional has the value false(2). It must not be instantiated in rows for all other cases. The value of this object is unspecified when tnOthOdukTCurrentStatus 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.