/mcpCall awarded and delivered in an established channel The typical scenario is a successful call. 7 Indicates that the called party has been awarded the incoming call and that the incoming call is connected to a channel already established with that called party for similar calls. Preemption The typical scenario is for emergency services. 8 Indicates the call is preempted. Preemption; Circuit reserved for reuse The typical scenario is for emergency services. 9 Indicates the call is preempted and the circuit is reserved for reuse by a preempting exchange. Normal call clearing The typical scenario is a call participant hung up. 16 Indicates that the call was cleared because one of the parties involved with the call has requested that the call be cleared. User busy The typical scenario is the user is already on the telephone. 17 Indicates that the called party is unable to accept another call because the busy condition of the user has been encountered. This cause value can be generated by the called party or by the network. In the case when the called party determined the user is busy, it is noted that the called equipment is compatible with the call. No user responding The typical scenario is the user did not answer the telephone. 18 Used when the called party does not respond to a call establishment message with either an alerting or connect indication within the time allotted. The number that was dialed has an active D-channel, but the far end chooses not to answer. No answer from the user (user alerted) The typical scenario is the user did not answer the telephone. 19 Used when the called party has been alerted but does not respond with a connect indication within the time allotted. This cause is not generated by Q.931 procedures but can be generated by internal network timers. Subscriber Absent The typical scenario is the user lost network connectivity or is out of range. 20 Used when a mobile station has logged off, radio contact is not obtained with a mobile station, or if a personal telecommunication party is temporarily not addressable at any network interface. Indicates that the equipment that sent this cause code does not wish to accept this call, although it can accept the call because the equipment that sent the cause is neither busy nor incompatible. Can also be generated by the network which indicates that the Call Rejected The typical scenario is the subscriber has a service constraint that does not accept this call. 21