If the conenctions you have set as 32m,20m & 32m are really delivered on SDH interfaces none of these routers will work. You will have to do to at least a 7200 series router. I have not seen a interface that will go into any of the ISR routers that can do SDH.
Now if your service provider is actually giving you ethernet then you need 3 ethernet ports and a serial port.
You can get the extra ethernet port by using a hwic-esw. For your serial you it will depend on if you need a csu/dsu or not. Something like a WIC-1T or VWIC-1MFT-E1 but this will depend to a point how the serial circuit is delivered.
Now you can put these cards into a 1841 and get everything connected but if you attempt to run the speeds you have listed it will overload the router. You have close to 100m of traffic so if you are really going to run that fast you are going to have issues even with 2800 series routers.
