Cisco voice gateway E1 RAI, AIS, LOF detected?

[yum3372]

Hi All, 

I have issue on my voice gateway, below logs are being written since yesterday. and E1 controller has orange light on its 0/0/1. What's the problem on it? Please help!!

000541: Mar 27 15:52:54.988: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (AIS detected)
000542: Mar 27 15:52:55.056: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000543: Mar 27 15:52:55.988: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000544: Mar 27 15:52:58.308: %MARS_NETCLK-3-HOLDOVER: Exiting Holdover for Controller E1 0/0/1
000545: Mar 27 15:52:58.988: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (AIS detected)
000546: Mar 27 15:52:59.056: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000547: Mar 27 15:53:00.988: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000548: Mar 27 15:53:01.988: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000549: Mar 27 15:53:03.988: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000550: Mar 27 15:53:05.820: %MARS_NETCLK-3-HOLDOVER: Exiting Holdover for Controller E1 0/0/1
000551: Mar 27 16:03:10.986: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000552: Mar 27 16:03:11.070: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000553: Mar 27 16:03:11.986: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000554: Mar 27 16:03:14.322: %MARS_NETCLK-3-HOLDOVER: Exiting Holdover for Controller E1 0/0/1
000555: Mar 27 16:10:55.988: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000556: Mar 27 16:10:56.072: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000557: Mar 27 16:10:57.988: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000558: Mar 27 16:11:06.324: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000559: Mar 27 16:11:06.324: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000560: Mar 27 16:11:26.988: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000561: Mar 27 16:11:28.988: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000562: Mar 27 16:11:37.332: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000563: Mar 27 16:34:39.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (AIS detected)
000564: Mar 27 16:34:40.097: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000565: Mar 27 16:34:41.989: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000566: Mar 27 16:34:44.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000567: Mar 27 16:34:46.989: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000568: Mar 27 16:34:47.349: %MARS_NETCLK-3-HOLDOVER: Exiting Holdover for Controller E1 0/0/1
000569: Mar 27 17:01:06.987: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000570: Mar 27 17:01:07.103: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000571: Mar 27 17:01:08.987: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000572: Mar 27 17:01:08.987: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000573: Mar 27 17:01:10.987: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000574: Mar 27 17:01:13.119: %MARS_NETCLK-3-HOLDOVER: Exiting Holdover for Controller E1 0/0/1
000575: Mar 27 17:04:20.987: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000576: Mar 27 17:04:21.119: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000577: Mar 27 17:04:22.987: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000578: Mar 27 17:04:31.367: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000579: Mar 27 17:04:31.367: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000580: Mar 27 17:05:13.987: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000581: Mar 27 17:05:15.987: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000582: Mar 27 17:05:24.375: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000583: Mar 27 17:19:36.986: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000584: Mar 27 17:19:37.138: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000585: Mar 27 17:19:38.986: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000586: Mar 27 17:19:47.386: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000587: Mar 27 17:19:47.386: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000588: Mar 27 17:20:27.987: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000589: Mar 27 17:20:29.987: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000590: Mar 27 17:20:38.395: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000591: Mar 27 17:40:46.987: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000592: Mar 27 17:40:47.159: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000593: Mar 27 17:40:48.987: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000594: Mar 27 17:40:57.407: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000595: Mar 27 17:40:57.407: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000596: Mar 27 17:41:13.987: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000597: Mar 27 17:41:15.987: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000598: Mar 27 17:41:24.415: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000599: Mar 27 17:43:13.987: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (AIS detected)
000600: Mar 27 17:43:14.175: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000601: Mar 27 17:43:15.987: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000602: Mar 27 17:43:17.987: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000603: Mar 27 17:43:19.987: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000604: Mar 27 17:43:20.427: %MARS_NETCLK-3-HOLDOVER: Exiting Holdover for Controller E1 0/0/1
000605: Mar 27 17:46:05.988: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (AIS detected)
000606: Mar 27 17:46:06.176: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000607: Mar 27 17:46:07.988: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000608: Mar 27 17:46:16.428: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000609: Mar 27 17:46:16.428: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000610: Mar 27 17:49:41.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000611: Mar 27 17:49:43.989: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000612: Mar 27 17:49:52.437: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000613: Mar 27 18:10:01.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000614: Mar 27 18:10:02.201: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000615: Mar 27 18:10:03.989: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000616: Mar 27 18:10:12.449: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000617: Mar 27 18:10:12.449: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000618: Mar 27 18:18:16.987: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000619: Mar 27 18:18:18.987: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000620: Mar 27 18:18:27.459: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000621: Mar 27 18:25:49.988: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000622: Mar 27 18:25:50.220: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000623: Mar 27 18:25:51.988: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000624: Mar 27 18:26:00.468: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000625: Mar 27 18:26:00.468: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000626: Mar 27 18:28:04.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000627: Mar 27 18:28:06.989: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000628: Mar 27 18:28:15.477: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000629: Mar 27 18:41:40.988: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000630: Mar 27 18:41:41.240: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000631: Mar 27 18:41:42.988: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000632: Mar 27 18:41:51.488: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000633: Mar 27 18:41:51.488: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000634: Mar 27 18:42:01.988: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000635: Mar 27 18:42:03.988: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000636: Mar 27 18:42:12.248: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000637: Mar 27 18:52:20.990: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000638: Mar 27 18:52:21.010: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000639: Mar 27 18:52:22.990: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000640: Mar 27 18:52:31.258: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000641: Mar 27 18:52:31.258: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000642: Mar 27 19:03:32.988: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000643: Mar 27 19:03:34.988: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000644: Mar 27 19:03:43.268: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000645: Mar 27 19:34:03.987: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000646: Mar 27 19:34:04.035: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000647: Mar 27 19:34:05.987: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000648: Mar 27 19:34:14.283: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000649: Mar 27 19:34:14.283: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000650: Mar 27 19:47:47.990: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000651: Mar 27 19:47:48.990: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (AIS detected)
000652: Mar 27 19:55:37.988: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000653: Mar 27 19:55:38.988: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (AIS detected)
000654: Mar 27 21:28:59.993: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000655: Mar 27 21:29:00.993: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000656: Mar 27 21:44:35.992: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000657: Mar 27 21:44:36.992: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000658: Mar 27 21:58:28.991: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000659: Mar 27 21:58:29.991: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000660: Mar 27 22:04:45.992: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000661: Mar 27 22:04:46.992: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000662: Mar 27 22:08:35.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000663: Mar 27 22:08:36.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000664: Mar 27 22:28:04.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000665: Mar 27 22:28:06.993: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000666: Mar 27 22:28:15.329: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000667: Mar 27 22:44:31.992: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000668: Mar 27 22:44:32.092: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000669: Mar 27 22:44:33.992: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000670: Mar 27 22:44:42.340: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000671: Mar 27 22:44:42.340: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000672: Mar 28 00:16:26.992: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000673: Mar 28 00:16:28.992: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000674: Mar 28 00:16:37.368: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000675: Mar 28 00:17:13.992: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000676: Mar 28 00:17:14.128: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000677: Mar 28 00:17:15.992: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000678: Mar 28 00:17:24.376: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000679: Mar 28 00:17:24.376: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000680: Mar 28 00:18:01.992: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000681: Mar 28 00:18:03.992: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000682: Mar 28 00:18:12.384: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000683: Mar 28 00:24:05.993: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000684: Mar 28 00:24:06.145: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000685: Mar 28 00:24:07.993: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000686: Mar 28 00:24:11.993: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000687: Mar 28 00:24:13.993: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000688: Mar 28 00:24:14.993: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (AIS detected)
000689: Mar 28 00:24:16.993: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000690: Mar 28 00:24:18.429: %MARS_NETCLK-3-HOLDOVER: Exiting Holdover for Controller E1 0/0/1
000691: Mar 28 00:24:18.677: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000692: Mar 28 00:24:28.929: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000693: Mar 28 00:24:28.929: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000694: Mar 28 00:24:29.993: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000695: Mar 28 00:24:31.993: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000696: Mar 28 00:24:41.438: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000697: Mar 28 00:30:54.991: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (RAI detected)
000698: Mar 28 00:30:55.199: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000699: Mar 28 00:30:55.991: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000700: Mar 28 00:30:58.451: %MARS_NETCLK-3-HOLDOVER: Exiting Holdover for Controller E1 0/0/1
000701: Mar 28 00:37:45.992: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (RAI detected)
000702: Mar 28 00:37:46.200: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000703: Mar 28 00:37:46.992: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000704: Mar 28 00:37:49.452: %MARS_NETCLK-3-HOLDOVER: Exiting Holdover for Controller E1 0/0/1
000705: Mar 28 00:37:52.992: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (RAI detected)
000706: Mar 28 00:37:53.200: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000707: Mar 28 00:37:53.992: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000708: Mar 28 00:37:56.452: %MARS_NETCLK-3-HOLDOVER: Exiting Holdover for Controller E1 0/0/1
000709: Mar 28 00:37:56.992: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (RAI detected)
000710: Mar 28 00:37:57.200: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000711: Mar 28 00:37:57.992: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000712: Mar 28 00:38:00.452: %MARS_NETCLK-3-HOLDOVER: Exiting Holdover for Controller E1 0/0/1
000713: Mar 28 00:39:10.993: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000714: Mar 28 00:39:11.201: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000715: Mar 28 00:39:12.993: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000716: Mar 28 00:39:21.453: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000717: Mar 28 00:39:21.453: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000718: Mar 28 01:13:56.992: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000719: Mar 28 01:13:58.992: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000720: Mar 28 01:14:07.468: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000721: Mar 28 01:32:57.992: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000722: Mar 28 01:32:58.232: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000723: Mar 28 01:32:59.992: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000724: Mar 28 01:32:59.992: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000725: Mar 28 01:33:01.992: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000726: Mar 28 01:33:02.484: %MARS_NETCLK-3-HOLDOVER: Exiting Holdover for Controller E1 0/0/1
000727: Mar 28 01:39:43.993: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000728: Mar 28 01:39:44.233: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000729: Mar 28 01:39:45.993: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000730: Mar 28 01:39:54.485: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000731: Mar 28 01:39:54.485: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000732: Mar 28 02:11:15.992: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000733: Mar 28 02:11:17.992: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000734: Mar 28 02:11:26.252: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000735: Mar 28 02:51:08.993: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (AIS detected)
000736: Mar 28 02:51:09.021: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000737: Mar 28 02:51:10.993: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000738: Mar 28 02:51:19.269: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000739: Mar 28 02:51:19.269: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000740: Mar 28 02:51:54.993: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000741: Mar 28 02:51:56.993: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000742: Mar 28 02:52:05.277: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000743: Mar 28 03:20:33.994: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000744: Mar 28 03:20:34.042: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000745: Mar 28 03:20:35.994: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000746: Mar 28 03:20:44.290: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000747: Mar 28 03:20:44.290: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000748: Mar 28 04:06:32.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000749: Mar 28 04:06:33.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000750: Mar 28 04:46:38.988: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000751: Mar 28 04:46:39.988: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000752: Mar 28 04:49:50.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000753: Mar 28 04:49:51.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000754: Mar 28 04:50:25.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000755: Mar 28 04:50:26.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000756: Mar 28 04:52:24.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000757: Mar 28 04:52:25.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000758: Mar 28 04:52:26.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000759: Mar 28 04:52:27.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000760: Mar 28 05:44:53.987: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000761: Mar 28 05:44:55.987: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000762: Mar 28 05:45:04.319: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000763: Mar 28 06:43:32.987: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000764: Mar 28 06:43:33.091: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000765: Mar 28 06:43:34.987: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000766: Mar 28 06:43:43.339: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000767: Mar 28 06:43:43.339: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000768: Mar 28 07:50:49.989: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000769: Mar 28 07:50:51.989: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000770: Mar 28 07:51:00.361: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000771: Mar 28 07:57:55.986: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000772: Mar 28 07:57:56.122: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000773: Mar 28 07:57:57.986: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000774: Mar 28 07:58:06.370: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000775: Mar 28 07:58:06.370: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2
000776: Mar 28 08:00:44.987: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000777: Mar 28 08:00:45.987: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000778: Mar 28 08:01:23.987: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to up
000779: Mar 28 08:01:25.987: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to up
000780: Mar 28 08:01:34.379: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 2 to priority 1
000781: Mar 28 08:25:20.988: %CONTROLLER-5-UPDOWN: Controller E1 0/0/1, changed state to down (LOF detected)
000782: Mar 28 08:25:21.144: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller E1 0/0/1
000783: Mar 28 08:25:22.988: %LINK-3-UPDOWN: Interface Serial0/0/1:15, changed state to down
000784: Mar 28 08:25:31.392: %MARS_NETCLK-3-HOLDOVER_TRANS: Holdover timer exceeded for Controller E1 0/0/1
000785: Mar 28 08:25:31.392: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2

[Marcelo Morais]

Hi @yum3372 ,

 please use the following command:

# show controllers e1

and check the Understanding the show controller e1 command. 

For the AIS Detected ... please take a look at: E1 Alarm Troubleshooting.

Hope this helps !!!

[yum3372 · Accepted solution]

Thanks for your answer!! I actually inquired ISP with this issue and they replaced some parts of their equipment connecting to my voice gateway. and it's been resolved since then. it was ISP equipment problem.