DM-IWF Administrative State and Operational Status

The DM-IWF application has an Administrative State and an Operational Status. The Administrative State (or Admin State - enabled or disabled) indicates the state that the operator desires the DM-IWF application to be in. The Admin State can be manually modified by the operator. The Operational Status indicates the actual status of the DM-IWF application.

Table 1 lists the DM-IWF Admin State and Operational Status related to the MD-IWF Routed Service State, MD-IWF Routed Service Congestion Level and DM-IWF (internal) congestion levels. It specifies the actions that DM-IWF will take in various situations.

ComAgent MD-IWF Routed Service presents an aggregated view of the all MD-IWF instances (one instance per SS7-MP) that have registered as "service providers" for the MD-IWF Routed Service. ComAgent reports the MD-IWF Routed Service State and the MD-IWF Routed Service Congestion Level to each DM-IWF instance.

In the Diameter to MAP direction, the DM-IWF Operational Status and the MD-IWF Routed Service congestion level determine whether a given Request from DRL can be forwarded to an MD-IWF. The DM-IWF Operational Status is determined by multiple attributes including DM-IWF Admin State, DM-IWF (internal) congestion level, MD-IWF Routed Service State and MD-IWF Service Congestion Level. In Table 1, DM-IWF Congestion Level is the maximum of the DM-IWF (internal) Congestion Level and MD-IWF Routed Service Congestion Level.

In Table 1, the "DM-IWF Admin State," "DM-IWF Congestion State," DM-IWF Shutting Down State," and the "MD-IWF Routed Service State" are used as inputs for calculating the DM-IWF Operational Status, DM-IWF Operational Reason, and DM-IWF Operational Reason Color.