conference is down after 5 minutes ( 3 or more participants )

[hugomdbaez]

            Hello to all , i have CUCM 8.6.2 and in a building the conference fails

When a person add 2 more , after five minutes the conference is down

Can you give me some advice ?

Thanks a lot !

Hugo

[hugomdbaez]

The error is TEMPORAL ERROR

[hugomdbaez]

I changed the device pool and the error is not present . I must check the original device pool