I have a 2801 Router with IOS ver: Cisco IOS Software, 2801 Software (C2801-SPSERVICESK9-M), Version 12.4(3d), RELE
ASE SOFTWARE (fc3). I want to use a WIC-1SHDSL_V3 but it doesn't work in slots 1, 2 and 3. The led status on card is always off. Is there a problem with current IOS version?