Session Type Conflict Resolution at cnSGW
cnSGW resolves a session type conflicts by tagging:
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A session as emergency, if the DNN is tagged to emergency or if the session created is an emergency session. For emergency session, cnSGW uses the QCI/ARP received in the CS request to select a Message Priority.
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A session as IMS/VOLTE, when a bearer gets created with the QCI configured as IMS/VOLTE under DNN profile.
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A session as WPS based on QCI/ARP received.
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If a session satisfies multiple condition, session type is tagged based on the following criteria:
WPS > Emergency > IMS