Feature Description
The Emergency SoS Support feature enables the co-located cloud-native SMF and PGW-C to support SoS emergency over LTE for subscribers camped on the 4G network and SoS emergency service fallback to LTE for subscribers camped on the 5G network.
The Emergency SoS Support feature supports the following functionalities:
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Provides a new configuration to skip UDM interaction.
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Enables an emergency PDN connection creation in 4G (LTE) for PGW-C.
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Supports emergency service fallback to LTE requirement for SMF serving subscriber in NR.
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Supports interworking with an existing charging interface failure handling to ‘continue’ emergency call creation upon failure.
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Supports interworking with an existing secondary authentication using radius to skip radius authentication for emergency calls when not configured.
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Provides inter-RAT handover support (4G to 5G and 5G to 4G) for EPS interworking capable subscribers.