Setting to cut off a call in NEC 8100

[Zero6]

Hi All,

Does anybody know if there is a setting in the Nec 8100, that can cut outgoing calls after a certain time?
Reason being a client has an issue that calls are cut after 1 hour on the phone.
I suspect the provider, but i want to verify if there is nothing wrong on the pbx side.

Thank you in advance

 

[belevedere]

Make sure MB 20-13-03 is not checked.

 

[Zero6]

Thanks belevedere,

I checked MB 20-13-03 and it is not checked.
I told the client to check with the provider on this