[Asterisk-Users] How to fix a Blue Alarm?? Line Noise?

Jon Pounder JonP at inline.net
Fri Aug 12 09:56:27 MST 2005


> Bruce Ferrell wrote:
>
>> You need to be looking at a "lower" level
>
> Like hw/cabling errors?? If so, that's what I was afraid of for cost
> reasons.

no - the stuff you found relates to configuring one 64k channel of the T1,
you need to find the settings to configure the overall t1.

- someone mentioned the encoding settings - its not that or you would be
getting more than just a blue alarm, it would not be working period.

- you need to look for clock source settings, and set those.

have your asterisk t1 card generate the clock on the asterisk TX side for
sure. it sounds like the pbx just generates its own tx clock based on the
rx data which is what you want (that might be faulty who knows). if it can
generate its own tx clock from a crystal try that instead and see if it
helps.






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Jon Pounder

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