Failed Seconds on Hipath 4000

[kevin906]

We have a large HP4K with 50+ T1 spans. About half are logging Failed Seconds in 900 second increments. No complaints from users. The spans are all fed from different sources so a telco issue seems unlikely. Not sure what the cause of this might be since it only logs failed seconds. No errors show up in the Hista file for these spans. Of course the manuals do little to explain the meaning of the error.

Note the error logs:
DIS-BSSU:1,9,61,,CURR;

H500: AMO BSSU STARTED

CIRCUIT 0 :

+==============================================================================+

| CURRENT 15 MIN. STATISTICS FOR TMDN/DIU2U LTG.LTU.EBT: 1 .9 .61

+------------------------------------------------------------------------------+

| |

| ESF 0 |

| ES CURR 0 PREV 0 |

| FS CURR 100 PREV 900 |

| BES CURR 0 PREV 0 |

| OES CURR 0 PREV 0 |

| US CURR 0 PREV 0 |

| DS CURR 0 PREV 0 |

| |

| 1 MINUTES 40 SECONDS INTO CURRENT INTERVAL. |

+------------------------------------------------------------------------------+

| |

| ALARM STATUS : NO ERRORS(GREEN) |

+------------------------------------------------------------------------------+

AMO-BSSU -111 BOARD SWITCH, SWITCHING UNIT

DIS-BSSU:1,9,61,,FS;

H500: AMO BSSU STARTED

CIRCUIT 0 :

+==============================================================================+

| 24 HOUR INTERVAL STATISTICS FOR TMDN/DIU2U LTG.LTU.EBT: 1 .9 .61

+------------------------------------------------------------------------------+

| FS - FAILED SECONDS |

| |

| CURRENT 15 MIN [PAST 15 MIN INTERVALS ->] |

| / |

| 255 132 132 132 132 132 132 132 |

| 132 132 132 132 132 132 132 132 |

| 132 132 132 132 132 132 132 132 |

| 132 132 132 132 132 132 132 132 |

| 132 132 132 132 132 132 132 132 |

| 132 132 132 132 132 132 132 132 |

| 132 132 132 132 132 132 132 132 |

| 132 132 132 132 132 132 132 132 |

| 132 132 132 132 132 132 132 132 |

| 132 132 132 132 132 132 132 132 |

| 132 132 132 132 132 132 132 132 |

| 132 132 132 132 132 132 132 132 |

| |

| ALARM STATUS : NO ERRORS(GREEN) |

+------------------------------------------------------------------------------+

 

[donb01]

I have had errors on my T1s on occasion with either no complaints from the users or they don't realize there are issues. Most often I get complaints of clicking and popping on the line or a little static.

Am I reading that right that you are getting 100 frame slips in just short of 2 minutes? That is pretty high. Or was it 100 frame slips in the past 24 hours - which is not off the wall.

You state you have multiple providers - do you also have multiple demarks? If most of the wiring enters and terminates in the building at the same place you would have a wiring problem at the interface. If you had a big electrical storm recently you might have some marginal protectors on the circuits, or one bad smart jack in a larger cabinet that's interfering with others - or in my case, we have a Lightspan 1000 on premises and if something is flaky with that it could take out a whole bunch of circuits, and that could effect lots of providers if that is common "last mile" equipment they are all sharing.

It could also be some large new chunk of wireless equipment your IT folks installed (unlikely) or some new radio equipment, or a couple of big ol' PC's emitting interference, florescent lighting can cause problems inf close enough or your building could have a ground fault.

Best thing probably is to bring in some telco service reps and have them set up a T-bird on some of the lines and see if the errors are coming right from the source or if they are getting picked up elsewhere in the building. They can also do some invasive testing from the CO to the smart jacks if your lines are not all in operation 24 hours.

I am fortunate in that I only have to deal with about 20 of them and most of my problems are annoying enough so you can track them easily enough.

 

[keyset6]

Just curious if faxing can be done successfully. As you said most of the time there won't be any reports of bad audio quality, but where 1's and 0's are involved such as in faxing that's when the errors become apparent.

 

[kevin906]

The issue has been resolved. I performed a RESET-BSSU on the offending cards which has taken care of the issue. Something must have glitched the cards at some point causing them to log bogus errors. They are now running clean. Should have done that in the first place.