NOT a LE employee wrote:
>
> On Tue, 26 May 1998, Robert H. Clugston wrote:
>
> > I've got a blue and loss of sync alarm. The line is shown to be in the reset
> > state. How does this happen?
> > I've got the phone company looking into it.
>
> from: http://www.adtran.com/support/slvl2/t1alarms.html
>
> AIS - Alarm Indication Signal: (also called Blue Alarm or Keep Alive,
> depending on the point of view) The CSU is receiving unframed all
> ones on the Network Interface. Can originate at the Smart Jack if it does
> not recognize a valid T1 signal from the CSU (possibly caused by a broken
> wire pair on pins 4 and 5 or excessive Line Build Out on the CSU), or may
> be a result of equipment failure in the Telco network.
>
> Try changing out the T1 cable and see if the errors go away...
>
> thank goodness for archives and saving pertinant messages ;)
>
> --
> Aloha from Paradise,
>
> Sherwood
>
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