As they are functioning normally with other servers, I assumed that they are fine..And even if Cisco will reproduce the setup, may be the problem will not appear.. same as for me, some servers are working without any issue, all are Sun servers.

Is the cable cisco original ?I am not quite sure, but I tried this cable and other couple of cables, all are working fine with other serversCan you try another port in the same module ?I did that, same result, it is not sensing any cable is attached ...

Hi,Below is the output of "show serial" , "show run serial", and "show controll serial" for the old working router.Then the same for the new not working one.The available font here is the New Courier only..============================================...

Sure, I will post when I'll be back to office the day after tomorrow..According to Cisco, HWIC-4T replaces NM-4T, any idea if they are syncronous interfaces?

Hi Paolo,I have an old server connected to old 36xx cisco router with NM-4T serial module through RS449 cable (serial to RS449 cable).To replace, I bought 39xx router with HWIC-4T serial WIC (smart serial to RS449 cable).Copied the same configuration...