automatic attendant

[kabersystem]

Hello,
We have the same problem in two location with the same voice provider with seven lines.
One of the hardware/software configuration is:
OMNIPCX with
Equipment description OI Code Qty

Data infrastructure (AA36)
OXO CONNECT POWERCPU EE 3EH04028AA 1

OXO Connect software licenses

(CC31)
SWL OXO CONNECT 1 UTL PROMO MIGRATION 3EH03560AA 22
SWL MIG OXO CONNECT R3 W/O POWERCPU EE 3EH03565AA 1

Software Assurance SMB (GG15)
SOFTWARE ASSURANCE FOR OXO CONNECT 3Y 3EY98998AA 22

Sw automated attendant
AA software license 3EY98997AA 1


AA software license 3EY98997AA 1


If someone call from a mobile phone, the external line is not working and automated attendant is not working.
The phone rings from mobile but no ring inside from automated attendant.
If someone is restarting the Oxo, for few hours is working well.
But after that, is not working again.

Do you have any ideas?

Thank you.

[kabersystem]

We discover that the problem appears when there are too many external calls. The question is : is the problem of provider or the problem is our omnipcx?