Customer wishes to upgrade from the version 12.3(22) on a router 7204vxr to the version 12.4(11)T3. The feature set from the previous version is the "IP Plus" (image file is c7200-is-mz.123-22.bin). The memory size of the router is: DRAM:256 MB Flash:64. I could not find what is the equivalent version for the version that the customer is asking me. In the version 12.4, the feature set names are different. Is there any table that I can find this information?