3.5.1.4.3 Active
The following events are processed in this state:
Receiving a TXUSER_ENLISTMENT_MTAG_PREPAREREQ Message (section 3.5.5.2.2.3)
Receiving a TXUSER_ENLISTMENT_MTAG_ABORTREQ Message (section 3.5.5.2.2.5)
Connection Disconnected (section 3.5.5.2.2.6)