Bit mask giving the set of current active failures on the upstream (bit set => failure is ON). A failure is declared when the corresponding defect is active for more than 2.5 (+/-0.5) sec. A failure is cleared when the corresponding defect is off for at least 10.5 (+/-0.5) sec. The bit index and corresponding failure are: Bit[30] - Set when unavailable time is counted Bit[29] - Set when the modem is not in the Running Showtime state Bit[25] - Loss of cell delineation - interleaved path Bit[24] - Loss of cell delineation - fast path Bit[19] - Loss of signal Bit[18] - Loss of frame Bit[17] - No cell delineation - interleaved Bit[16] - No cell delineation - fast Bit[15] - PTM TC Out-Of-Sync Violation for bearer channel B0 Bit[14] - PTM TC Coding Violation for bearer channel B0, non-preemptive Bit[13] - PTM TC Coding Violation for bearer channel B0, preemptive Bit[12] - PTM TC Out-Of-Sync Violation for bearer channel B1 Bit[11] - PTM TC Coding Violation for bearer channel B1, non-preemptive Bit[10] - PTM TC Coding Violation for bearer channel B1, preemptive Bit[07] - No common mode in Handshake. Set when the test configuration prevents the training in the only mode supported by the ATU-R Bit[06] - Bit rate is too high. Set when the line quality does allow support for the minimum bit rate configured Bit[05] - Communication problem. Sethwne initialisation could not be completed due to time-out or a CRC error in one of the message received from the ATU-R Bit[04] - No detection. Set when the ATU-R has not been detected after 2.5 seconds of attempts to activate the line. Note: The RunningShowtime state is left as soon as unavailable time is counted (10 consecutive severely errored seconds), so bits 1 and 2 are always set together.