OSB x8 - Port Failure -issue with the PBX or Provider?

[Jacky2000]

Hi,
After a certain time external calls are not possible. Internally all works fine.
The logs show "Line failure" and the Status "Inactive No Port".

The provider says the issue is on our side.
We have replaced the DIUT2-ISDN S2M Module. No improvement.
We do not want to go for SIP or VoIP for the moment.

How to be sure the issue is not with the provider?
The trace (attached) is pointing to a Layer 2 issue "0xff C #30/122 0x7-0 !Layer 2 problem: 04000000000000000000".
After restarting the PBX, it works well for few hours or days and then the same issue with external calls.

Thanks and regards,
Jacky

 

[samduo]

Sounds like a network issue to me, best way to prove it with a PRI tester simulating the ISDN 30

Siemens/Unify - Hipath 3000, Openscape Office and Openscape Business.