Wu, your crap makes no sense. Why would your dispatcher declare emergency because you are not talking to him/her. I already said that's not what we do. You are talking to the ATC. However, from time to time, your dispatcher may pass along information that may be pertinent to the safety of your flight and it is in your best interest to listen. Maybe it's a security issue or any threats to your flight. Someday you will realize if you want to work for an airline that has transcons/international you might appreciate the update on the changed conditions, but hopefully you will stay on the B1900. Now often, as a dispatcher, we get a call from center saying you are not talking to them in New York airspace enroute to EWR. That's a problem. Now how it happened I don't want to know, but it happens a lot, and for that, we have to drop everything that we are doing and try to establish contact with you. That's what we do tool. or "Hey help! we are over the gulf and we lost our center freq!"