CS1 INAP Timed Calls

The following two example message sequences are for CS1 INAP timed calls, where charging for calls is based on the number of seconds used.

Figure 1 shows the message sequence used when MATRIXX Engine releases a CS1 INAP timed call because the subscriber has run out of funds. In this scenario, the EventTypeBCSM parameter in the InitialDP is set to 2 (collectedInfo).

Figure 1. CS1 INAP Timed Call
Figure 2 shows the message sequence used for a CS1 INAP timed call, where:
  • The EventTypeBCSM parameter in the InitialDP is set to 12 (termAttemptAuthorized).
  • MATRIXX Engine sends a request to the MSC to play announcements to the subscriber.
  • The call is disconnected when the subscriber hangs up.
Figure 2. CS1 INAP Timed Call with Announcements