Thank you for the info. I have resolved the issue by connecting the PSTN lines directly to the IVR, then destributing them over channels and used Forced Routing Number to avoid doing port mapping. Now it appears that the tenor has a corrupted DB and requires resetting its flash!!!
another question please, how can I save the configuration of my tenor to a .txt file or so??? I tried the sh -l command but I won’t be able to save all info!!!