I have a Cisco 2801 w/ WIC - T1 CSU/DSU. I want to upgrade to a 2xT1 Internet circuit and I need another T1 module. However, the WIC - T1 CSU/DSU is EOL and has been replaced by a HWIC-1DSU-T1 module. Does anyone know of any problems running Multi-Link FR if one module is a WIC and the other module is an HWIC? Would I be better off replacing the WIC-T1 with two HWIC-T1's or a VWIC2-2MFT?
I have this problem too.