E1 Controller down shwoing: Receiver is getting AIS

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Apr 9th, 2008
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Hi,


I have an E1 controller that is down indicating a rx AIS....As shown below


E1 0/0/0 is down.

Applique type is Channelized E1 - balanced

Receiver is getting AIS.

alarm-trigger is not set

Version info Firmware: 20070320, FPGA: 20, spm_count = 0

Framing is CRC4, Line Code is HDB3, Clock Source is Line.

CRC Threshold is 320. Reported from firmware is 320.

Data in current interval (598 seconds elapsed):

0 Line Code Violations, 0 Path Code Violations

0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins

0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 598 Unavail Secs

Data in Interval 1:

0 Line Code Violations, 0 Path Code Violations

0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins

0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 900 Unavail Secs

Data in Interval 2:

0 Line Code Violations, 0 Path Code Violations

0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins

0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 900 Unavail Secs

Data in Interval 3:

0 Line Code Violations, 0 Path Code Violations

0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins

0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 900 Unavail Secs


What can I look out for, I have checked for a few doccs on cisco and its pointing toa fault on my telco..


ANy ideas

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Overall Rating: 5 (3 ratings)
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Paolo Bevilacqua Wed, 04/09/2008 - 02:55
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It can be either a circuit fault, or the device on the other end is turned off or port shutdown.

Ayodeji Okanlawon Wed, 04/09/2008 - 02:57
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Paolo,


Thanks for the reply..


What do you mean device on the other end..This is an isdn30 circuit..do you mean the Telco switch?

Paolo Bevilacqua Wed, 04/09/2008 - 03:00
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Yes, an inactive port on the switch would show AIS to your side.

Ayodeji Okanlawon Wed, 04/09/2008 - 03:01
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Thank you, I am chasing the Telco provider already..


Thanks

Paolo Bevilacqua Wed, 04/09/2008 - 03:06
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Be persistent, they will refuse to admit fault (they are taught so in school).


One technique that works, I' ve used it yesterday, you set loopback on the router ("loopback local line" under controller), tell them that you have, at that point the ball is in their field.

Ayodeji Okanlawon Wed, 04/09/2008 - 03:22
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Paolo,


You are great!


I did set the loop back on the line and it came up with noi alarms...


Thanks

hellspire69_2 Fri, 10/02/2009 - 08:35
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Post has saved me as well thanks paolo!! i am having the same issue with the alarms being sent.. the controller has been going up and down for weeks now its finally down and the telco are telling me its nothing to do with them so now at least i can tell them it is..

Paolo Bevilacqua Fri, 10/02/2009 - 11:02
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Thank you for your appreciation, and good luck!

hellspire69_2 Fri, 10/02/2009 - 11:31
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no problems :) i take it back though its now flapping again. do you have any advice on diagnosing these sort of issues?


Dan

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