请教一下WCF问题

Question

using (ChannelFactory<IWCF_DataService> cf = new ChannelFactory<IWCF_DataService>(point))
                        {
                            IWCF_HTISDataService client = cf.CreateChannel();                           
                            client.ConnectTest();
                            cf.Close();
                            strResult = "OK";
                        }为什么在本机调试成功,放到 远程服务器上执行ConnectTest()报错,提示通信对象 System.ServiceModel.Channels.ServiceChannel 无法用于通信，因为其处于“出错”状态。