I've been using Mobotix lately, which has been pretty good. I needed something I could run about 1000' over existing wiring, and their stuff worked well. The T25 door station and keypad module is what I used, and sounds like what you were asking for. Also, they do have RFID card readers as well as integration support for C4 and Crestron.

I had to also use numeric keypads to open gates from inside the property and ended up using a third party device...no matter though, worked like a champ.