IOS question about Cisco 1720.

Cisco FN says 12.3T has a Plus image (IP/ADSL/FW/IDS PLUS IPSEC 3DES), but 12.4 doesn't have a Plus image, probably from the limited memory on this platform.

But, jumps in the minor rev sometimes move features from plus to non-plus. Ie. long long ago, NAT was a Plus feature. Cisco would be ridiculed to have NAT be a premium feature any more. :)

I wouldn't go on that I need Plus feature set, but rather look for a specific feature for that platform in the various trains. Ie. the diff I see mostly is BGP/OSPF and IPv6 in the 12.3+ vs. 12.4 regular IP.