Did Samsung not come out with a replacement for the door phone
KPOPT-BDP4/XAR ?? I have a couple that may need replaced . Thanks

They did not and are not, it's discontinued and they suggest using a viking alternative. We've been searching for refurbs or new stock and can't find them anywhere.

But will the viking connect to samsung ?? I guess it would have to be analog port ? Viking 2000a?

Unfortunately yes, you need to either use an open trunk port or an analog port depending on the model viking you go with.