I have a problem that seems to be caused by the WIC-2T smart serial card. I have a Cisco 2811 router in which I have installed a smart serial WIC-2T card. This card is linked via Telco 512Kbps data circuit to a remote site. All configs seem to be ok.
When the smart serial port (WIC-2T) is connected it shows that the Serial interface is up but line protocol down.
Any help given would be most appreciated as this is quite urgent.