There is a problem with the 7.0 s/w and a lot of issues and bugs. The answer DN is happen to be one of them however it should answer the original DN when its rings but if you press it will also call the extension as well(should not happen) in your case if the answer DN its not answering ,then maybe your s/w is more corrupted. I would suggest if you don't have a lot of programming is to do a startup and start programming from the scratch. We all hope for one time Nortel have it right from the first time but till then we wait for the MR (maintenance release) versions. I hope that helps.