internal void ResumeCall(CallViewModel viewModel)
        {
            //***************************************************************************************************************
            // Resume call after Hold.
            //*****************************************************************************************************************
            lock (CallsViewModelList)
            {
                if (FindCallViewModel(viewModel))
                {
                    LOG.Info(String.Format("Resuming call for {0}. {1}", viewModel.CallerInfo,
                                           viewModel.ActiveCall.NativeCallPtr));

                    viewModel.ResumeCall();
                }
            }
        }
        internal void ResumeCall(CallViewModel viewModel)
        {
            lock (CallsViewModelList)
            {
                if (FindCallViewModel(viewModel))
                {
                    LOG.Info(String.Format("Resuming call for {0}. {1}", viewModel.CallerInfo,
                        viewModel.ActiveCall.NativeCallPtr));

                    viewModel.ResumeCall();
                }
            }
        }