BCM400 Error Message - Event ID 326

I am getting a minor alarm every minute on my BCM400.
The message is code 326 :
"This event is generated when the short-term alarm threshold has been
surpassed in the Digital Trunk Interface module for the detection of
controlled slip underflow. The module is in a no-new-calls state.
DTCM = 0. Intervention is required to find out"
I am struggling to find out where I should be looking to try fix the
problem and stop this message.
I was getting a lot of Critical Alarm 75's but after a lot of messing
and after BT changed a lot of cards on our PRI this seems to have
stopped. I still suspect we have some line issues though, Does anyone
know what the above alarm relates to, any help is greatly appreciated.
Thanks
Reply to
nortel user
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What is the clock source set to? I recently had this problem and we managed to solve it by (strange but true) switching the system off, pulling out the DTM and re-seating it, then turning the system back on. Again, strange but true...it hasn't alarmed since.
Reply to
CaptainReboot

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