We're looking at the 1921 as a possible replacement for the 1841. From what I can see, the WIC-1DSU-56K4 is not supported in the 1900/2900/3900 routers, and I can't seem to find any information about a replacement.
Does anyone know if there will be some sort of DS0 interface for the ISR G2 series at some point, or has Cisco simply done away with all support for 56k circuits moving forward.
Not a major issue at this point, since we can still get 1841s, but at some point the 1800s are going to end up discontinued, and we're wondering what the migration path would be.
Thanks,
Phil