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Q931 circuit 81U alarm

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NHStel

Technical User
Jan 19, 2023
3
GB
Hi, Have been trying to connect a V12 DLI to our SIP converter boxes i get one link to work but the other 3 i get a 81u alarm on the DX. I have checked all the Q931 parameters and they are good.
Has anyone had this i was thinking it could be a load bearing problem with the power unit but i have down all the other DLI's and removed them from the shelves and still the same.
 
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