2.11.3 Trigger Points

Trigger points are specific points in call processing where the Rule Templates along with their associated Rulescan be executed. The trigger points supported in the DSR are:

• Upon receipt of a Request (including a Redirected Request) (including CER, DWR, DPR).
• Prior to relay or proxy or sending of the Request (including CER, DWR, DPR).
• Prior to forwarding a re-routed Request.
• Upon receipt of an Answer (including CEA, DWA, DPA).
• Just prior to forwarding/sending the Answer downstream. (including CEA, DWA, DPA)
• Just prior to the invocation of an application.
• Immediately after the Request exits the application.
• Just prior to the Answer being routed to the application.
• Immediately after the answer exits the application.

Figure 2-44 Mediation Trigger Points

The mediation framework also supports defining multiple mediation rules at a single trigger point or invoking the same mediation rule at multiple trigger points.