Indicates the last retrained information performed on the line. Options: 1. none(1) - No record is available 2. cpe-l3-trigger(2) - The terminal initiates a low power consumption L3 request 3. lom-us-trigger-dra(3) - The upstream noise margin is smaller than the minimum noise margin in rate dynamic adjustment 4. lom-ds-trigger-dra(4) - The downstream noise margin is smaller than the minimum noise margin in rate dynamic adjustment 5. cpe-never-answer-oam(5) - No OAM response is received from the CPE all the time 6. cpe-no-more-answer-oam(6) - No OAM response is received from the CPE 7. persistent-ncd-us(7) - Upstream continuous no cell delineation 8. persistent-ncd-ds(8) - Downstream continuous no cell delineation 9. persistent-lcd-us(9) - Upstream continuous loss of cell delineation 10.persistent-lcd-ds(10) - Downstream continuous loss of cell delineation 11.l2-problem-co-drop(11) - The CO is faulty during the switching from L0 to L2 12.l2-problem-cpe-drop(12) - The CPE is faulty during the switching from L0 to L2 13.bitswap-refused-us-co-drop(13) - The CO goes offline when the upstream bit swap fault occurs 10 times consecutively 14.bitswap-refused-us-cpe-drop(14) - The CPE goes offline when the downstream bit swap fault occurs 10 times consecutively 15.channel-change-us-co-drop(15) - The CO goes offline when the upstream net rate changes 16.channel-change-us-cpe-drop(16) - The CPE goes offline when the upstream net rate changes 17.noise-increase-us-co-drop(17) - The CO goes offline when the upstream noise increases 18.noise-increase-us-cpe-drop(18) - The CPE goes offline when the upstream noise increases 19.bitswap-refused-ds-co-drop(19) - The CO goes offline when the downstream bit swap fault occurs 10 times consecutively 20.bitswap-refused-ds-cpe-drop(20) - The CPE goes offline when the downstream bit swap fault occurs 10 times consecutively 21.channel-change-ds-co-drop(21) - The CO goes offline when the downstream net rate changes 22.channel-change-ds-cpe-drop(22) - The CPE goes offline when the downstream net rate changes 23.noise-increase-ds-co-drop(23) - The CO goes offline when the downstream noise increases 24.noise-increase-ds-cpe-drop(24) - The CPE goes offline when the downstream noise increases 25.lom-us-co-drop(25) - The CO goes offline when the upstream noise margin is smaller than the minimum noise margin 26.lom-us-cpe-drop(26) - The CPE goes offline when the upstream noise margin is smaller than the minimum noise margin 27.lom-ds-co-drop(27) - The CO goes offline when the downstream noise margin is smaller than the minimum noise margin 28.lom-ds-cpe-drop(28) - The CPE goes offline when the downstream noise margin is smaller than the minimum noise margin 29.sra-problem-us-co-drop(29) - The CO goes offline when the upstream SRA is faulty 30.sra-problem-us-cpe-drop(30) - The CPE goes offline when the upstream SRA is faulty 31.sra-failed-us-co-drop(31) - The CO goes offline when the upstream SRA fails 32.sra-failed-us-cpe-drop(32) - The CPE goes offline when the upstream SRA fails 33.sra-problem-ds-co-drop(33) - The CO goes offline when the downstream SRA is fault 34.sra-problem-ds-cpe-drop(34) - The CPE goes offline when the downstream SRA is faulty 35.sra-rejected-ds-co-drop(35) - The CO goes offline when the downstream SRA is rejected 36.sra-rejected-ds-cpe-drop(36) - The CPE goes offline when the downstream SRA is rejected 37.bitswap-problem-us-co-drop(37) - The CO goes offline when the upstream bit swap is faulty 38.bitswap-problem-us-cpe-drop(38) - The CPE goes offline when the upstream bit swap is faulty 39.bitswap-failed-us-co-drop(39) - The CO goes offline when the upstream bit swap fails 40.bitswap-failed-us-cpe-drop(40) - The CPE goes offline when the upstream bit swap fails 41.bitswap-problem-ds-co-drop(41) - The CO goes offline when the downstream bit swap is faulty 42.bitswap-problem-ds-cpe-drop(42) - The CPE goes offline when the downstream bit swap is faulty 43.bitswap-rejected-ds-co-drop(43) - The CO goes offline when the downstream bit swap is rejected 44.bitswap-rejected-ds-cpe-drop(44) - The CPE goes offline when the downstream bit swap is rejected 45.cpe-switched-off(45) - The CPE power supply is shut down 46.cpe-lost(46) - The CPE is disconnected 47.co-reset(47) - The CO resets the chipset or line 48.co-stop(48) - The CO actively deactivate the port 49.unknown(49) - Unknown reason