: > So, is it still true that we do not need anything more powerful than a 4500 : > or 4700 to run this system? 4700 Fast Ethernet can only run half-duplex, 50 mbs, so 2 T-3 interfaces at full rated speed, 90 mbs, would exceed the Fast Ethernet interface speed. 4700M takes a max of 64 megs memory. james