A . OriginationMessage->CMServiceRequest->Allocation->Establish->AssignmentComplete->TchPreamble
B . OriginationMessage->CMServiceRequest->TchPreamble->Establish->AssignmentCompleteAllocation
C . OriginationMessage->CMServiceRequest->Establish->Allocation->TchPreamble->AssignmentComplete
D . OriginationMessage->CMServiceRequest->Establish->AssignmentComplete->Allocation->TchPreamble